Instrument-control Toolkit - Manual


Introduction

The Instrument Control toolkit is a set of low level I/O functions for serial, i2c, spi, modbus, parallel, tcp, gpib, vxi11, udp and usbtmc interfaces

Table of Contents


1 Installing and loading

The Instrument Control toolkit must be installed and then loaded to be used.

It can be installed in GNU Octave directly from octave-forge, or can be installed in an off-line mode via a downloaded tarball.

The toolkit must be then be loaded once per each GNU Octave session in order to use its functionality.

1.1 Requirements

For GPIB support (Linux only), linux-gpib must be installed before installing instrument-control. GPIB support is also available for windows by following the information from the wiki: https://wiki.octave.org/Instrument_control_package#Requirements

For VXI11 support, rpcgen, and libtirpc-devel must be installed before installing instrument-control.

For MODBUS support, the libmodbus-devel must be installed before installing instrument-control.

1.2 Windows install

If using the GNU Octave installer in Windows, the toolkit will have already been installed, and does not need to be re-installed unless a newer version is available.

Run the following command to verify if the toolkit is available:

pkg list instrument-control

1.3 Online Direct install

With an internet connection available, toolkit can be installed from octave-forge using the following command within GNU Octave:

pkg install -forge instrument-control

The latest released version of the toolkit will be downloaded, compiled and installed.

1.4 Off-line install

With the toolkit package already downloaded, and in the current directory when running GNU Octave, the package can be installed using the following command within GNU Octave:

pkg install instrument-control-0.9.5.tar.gz

1.5 Loading

Regardless of the method of installing the toolkit, in order to use its functions, the toolkit must be loaded using the pkg load command:

pkg load instrument-control

The toolkit must be loaded on each GNU Octave session.


2 Basic Usage Overview


2.1 Authors

The Instrument control package provides low level I/O functions for serial, i2c, spi, parallel, tcp, gpib, vxi11, udp and usbtmc interfaces.

It was written mainly by the following developers:

  • Andrius Sutas <andrius.sutasg at mail.com>
  • Stefan Mahr <dac922 at gmx.de>
  • John Donoghue <john.donoghue at ieee.org>

2.2 Available Interfaces

The ability to use each interface is dependent on OS and what libraries were available during the toolkit install.

To verify the available interfaces, run the following command in octave:

instrhwinfo

The function will return information on the supported interfaces that are available, similar to below:

    ToolboxVersion = 0.7.0
    ToolboxName = octave instrument control package
    SupportedInterfaces =
    {
      [1,1] = gpib
      [1,2] = i2c
      [1,3] = parallel
      [1,4] = serial
      [1,5] = serialport
      [1,6] = tcp
      [1,7] = tcpclient
      [1,8] = udp
      [1,9] = udpport
      [1,10] = usbtmc
      [1,11] = vxi11
    }

Most interfaces have two types of functions:

  • somewhat compatible matlab functions such as fread, fwrite
  • interface specific lower level functions such as udp_read, udp_write

2.3 Basic Serial

2.3.1 Serial

NOTE: The serial object has been deprecated and may not appear in newer versions of the instrument-control toolbox. Instead new code should use the serialport object.

The serial port can be opened using the serial function:

s = serial("/dev/ttyUSB1", 115200) 

The first parameter is the device name and is OS specific. The second parameter is the baudrate.

A list of available serial ports can be retrieved using the function:

seriallist

After creating the interface object, properties of the device can be set or retrieved using get or set functions or as property access.

s = serial("/dev/ttyUSB1", 115200) 
br = get(s, "baudrate") # gets the baudrate
br = s.baudrate  # also gets the baudrate
set(s, "baudrate", 9600) # set the baudrate
s.baudrate = 9600 # also sets the baudrate

The device can be written and read from using fread, fwrite and srl_read and slr_write functions.

srl_write(s, "hello world") # write hello world
fprintf(s, "hello again")
val = srl_read(s, 10) # attempt to read
val = fread(s, 10)

The device can be closed using fclose or srl_close.

fclose(s)

2.3.2 SerialPort

The recommended method of accessing serial ports is through the serialport object.

The serial port can be opened using the serialport function:

s = serialport("/dev/ttyUSB1", 115200) 

The first parameter is the device name and is OS specific. The second parameter is the baudrate.

A list of available serial ports can be retrieved using the function:

serialportlist

After creating the interface object, properties of the device can be set or retrieved using get or set functions or as property access.

s = serialport("/dev/ttyUSB1", 115200) 
br = get(s, "BaudRate") # gets the baudrate
br = s.BaudRate  # also gets the baudrate
set(s, "BaudRate", 9600) # set the baudrate
s.BaudRate = 9600 # also sets the baudrate

The device can be written and read from using read and write functions.

write(s, "hello world") # write hello world
val = read(s, 10)

The device can be closed by clearing the serialport object.

clear s

2.4 Basic TCP

2.4.1 TCP

NOTE: The TCP object has been deprecated and may not appear in newer versions of the instrument-control toolbox. Instead new code should use the tcpclient object.

A TCP connection can be opened using the tcp or tcpip function:

s = tcp("127.0.0.1", 80) 

The first parameter is the IP address to connect to. The second parameter is the port number. And optional timeout value can be also be provided.

A more matlab compatible function is available as tcpip to also open a tcp port:

s = tcpip("gnu.org", 80) 

The first parameter is a hostname or ip address, the second the port number. Additional parameter/value pairs can be provided after the port.

After creating the interface object, properties of the device can be set or retrieved using get or set functions or as property access.

s = tcp("127.0.0.1", 80)
oldtimeout = get(s, "timeout") # get timeout
set(s, "timeout", 10) # set the timeout
s.timeout = oldtimeout # also sets the timeout

The device can be written and read from using fread, fwrite and tcp_read and tcp_write functions.

tcp_write(s, "HEAD / HTTP/1.1\r\n\r\n")
val = tcp_read(s, 100, 500) # attempt to read 100 bytes

The device can be closed using fclose or tcp_close.

fclose(s)

2.4.2 TCP Client

The recommended method of creating a tcp connection is through the tcpclient object.

A TCP connection can be opened using the tcpclient function:

s = tcpclient("127.0.0.1", 80) 

The first parameter is the IP address or hostname to connect to. The second parameter is the port number.

Additional parameter/value pairs can be provided after the port.

After creating the interface object, properties of the device can be set or retrieved using get or set functions or as property access.

s = tcpclient("127.0.0.1", 80)
oldtimeout = get(s, "Timeout") # get timeout
set(s, "Timeout", 10) # set the timeout
s.Timeout = oldtimeout # also sets the timeout

The device can be written and read from using read and write functions.

write(s, "HEAD / HTTP/1.1\r\n\r\n")
val = read(s, 100) # attempt to read 100 bytes

The device can be closed by clearing the object variable.

clear s

2.5 Basic UDP

2.5.1 UDP

NOTE: The UDP object has been deprecated and may not appear in newer versions of the instrument-control toolbox. Instead new code should use the udpport object.

A UDP connection can be opened using the udp function:

s = udp("127.0.0.1", 80) 

The first parameter is the IP address data will be to. The second parameter is the port number.

If and ip address and port is not provides, it will default to "127.0.0.1" and 23.

The address and port can be changed after creation using the remotehost and remoteport properties.

s = udp() 
s.remotehost = "127.0.0.1";
s.remoteport = 100;

After creating the interface object, other properties of the device can be set or retrieved using get or set functions or as property access.

s = udp("127.0.0.1", 80)
oldtimeout = get(s, "timeout") # get timeout
set(s, "timeout", 10) # set the timeout
s.timeout = oldtimeout # also sets the timeout

The device can be written and read from using fread, fwrite and udp_read and udp_write functions.

udp_write(s, "test")
val = udp_read(s, 5)

The device can be closed using fclose or udp_close.

fclose(s)

2.5.2 UDP Port

The recommended method of creating a udp socket is through the udpport object.

A udpport object can be created using the udpport function:

s = udpport()

Additional parameter/value pairs can be provided during creation of the object.

After creating the interface object, properties of the device can be set or retrieved using get or set functions or as property access.

s = udpport()
oldtimeout = get(s, "Timeout") # get timeout
set(s, "Timeout", 10) # set the timeout
s.Timeout = oldtimeout # also sets the timeout

The device can be written and read from using read and write functions.

The destination address and port to send data to must be specified at least on the first time write is used.

write(s, "test", "127.0.0.1", s.LocalPort)
val = read(s)

The device can be closed by clearing the object variable.

clear s

3 Function Reference

The functions currently available in the toolkit are described below.


3.1 Common Functions

3.1.1 flushinput

: flushinput (dev)

Flush the instruments input buffers

Inputs

dev - connected device or array of devices

Outputs

None

See also: flushoutput.

3.1.2 flushoutput

: flushoutput (dev)

Flush the instruments output buffers

Inputs

dev - connected device or array of devices

Outputs

None

See also: flushinput.

3.1.3 readbinblock

: data = readbinblock (dev)
: data = readbinblock (dev, datatype)

read a binblock of data from a instrument device

Inputs

dev - connected device

datatype - optional data type to read data as (default ’uint8’)

Outputs

data - data read

See also: flushoutput.

3.1.4 readline

: data = readline (dev)

read data from a instrument device excluding terminator value

Inputs

dev - connected device

Outputs

data - ASCII data read

See also: flushoutput.

3.1.5 writebinblock

: writebinblock (dev, data, datatype)

Write a IEEE 488.2 binblock of data to a instrument device

binblock formatted data is defined as:

#<A><B><C>

where: <A> ASCII number containing the length of part <B>

<B> ASCII number containing the number of bytes of <C>

<C> Binary data block

Inputs

dev - connected device

data - binary data to send

datatype - datatype to send data as

Outputs

None

See also: flushoutput.

3.1.6 writeline

: writeline (dev, data)

Write data to a instrument device including terminator value

Inputs

dev - connected device

data - ASCII data to write

Outputs

None

See also: flushoutput.

3.1.7 writeread

: data = writeread (dev, command)

write a ASCII command and read data from a instrument device.

Inputs

dev - connected device

command - ASCII command

Outputs

data - ASCII data read

See also: readline, writeline.


3.2 General

3.2.1 instrhelp

: instrhelp ()
: instrhelp (funcname)
: instrhelp (obj)

Display instrument help

Inputs

funcname - function to display help about.
obj - object to display help about.

If no input is provided, the function will display and overview of the package functionality.

Outputs

None

3.2.2 instrhwinfo

Function File: [list] = instrhwinfo ()
Function File: list = instrhwinfo (interface)

Query available hardware for instrument-control

When run without any input parameters, instrhwinfo will provide the toolbox information and a list of supported interfaces.

Inputs

interface is the instrument interface to query. When provided, instrhwinfo will provide information on the specified interface.

Currently only interface "serialport","i2c" and "spi" and is supported, which will provide a list of available serial ports or i2c ports.

Outputs

If an output variable is provided, the function will store the information to the variable, otherwise it will be displayed to the screen.

Example

 instrhwinfo
 scalar structure containing the fields:
    ToolboxVersion = 0.4.0
    ToolboxName = octave instrument control package
    SupportedInterfaces =
    {
      [1,1] = i2c
      [1,2] = parallel
      [1,3] = serialport
      [1,4] = tcp
      [1,5] = udp
      [1,6] = usbtmc
      [1,7] = vxi11
    }

3.2.3 resolvehost

Loadable Function: name = resolvehost (host)
Loadable Function: [name, address] = resolvehost (host)
Loadable Function: out = resolvehost (host, returntype)

Resolve a network host name or address to network name and address

Inputs

host - Host name or IP address string to resolve.
name - Resolved IP host name.
returntype - ’name’ to get host name, ’address’ to get IP address.

Outputs

name - Resolved IP host name.
address - Resolved IP host address.
out - host name if returntype is ’name’, ipaddress if returntype is ’address’

Example

%% get resolved ip name and address of www.gnu.org
[name, address] = resolvehost ('www.gnu.org');
%% get ip address of www.gnu.org
ipaddress = resolvehost ('www.gnu.org', 'address');

See also: tcp, udp.


3.3 GPIB

3.3.1 @octave_gpib/fclose

Function File: res = fclose (obj)

Closes connection to GPIB device obj

3.3.2 @octave_gpib/fopen

Function File: res = fopen (obj) (dummy)

Opens connection to GPIB device obj This currently is a dummy function to improve compatibility to MATLAB

3.3.3 @octave_gpib/fprintf

Function File: fprintf (obj, cmd)
Function File: fprintf (obj, format, cmd)
Function File: fprintf (obj, cmd, mode)
Function File: fprintf (obj, format, cmd, mode)

Writes string cmd to GPIB instrument

obj is a GPIB object

cmd String format Format specifier mode sync

3.3.4 @octave_gpib/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from GPIB instrument

obj is a GPIB object

size Number of values to read. (Default: 100) precision precision of data

count values read errmsg read operation error message

3.3.5 @octave_gpib/fscanf

Function File: res = fscanf (obj)
Function File: res = fscanf (obj, format)
Function File: res = fscanf (obj, format, size)
Function File: [res,count] = fscanf (obj, ...)
Function File: [res,count,errmsg] = fscanf (obj, ...)

Reads data res from GPIB instrument

obj is a GPIB object

format Format specifier size number of values

count values read errmsg read operation error message

3.3.6 @octave_gpib/fwrite

Function File: fwrite (obj, data)
Function File: fwrite (obj, data, precision)
Function File: fwrite (obj, data, mode)
Function File: fwrite (obj, data, precision, mode)

Writes data to GPIB instrument

obj is a GPIB object

data data to write precision precision of data mode sync

3.3.7 clrdevice

Function File: clrdevice (obj)

Send clear command to Clear GPIB instrument.

obj is a GPIB object

3.3.8 gpib

Loadable Function: gpib = gpib ([gpibid], [timeout])

Open gpib interface.

gpibid - the interface number.
timeout - the interface timeout value. If omitted defaults to blocking call.

The gpib() shall return instance of octave_gpib class as the result gpib.

3.3.9 gpib_close

Loadable Function: gpib_close (gpib)

Close the interface and release a file descriptor.

gpib - instance of octave_gpib class.

3.3.10 gpib_read

Loadable Function: [data, count, eoi] = gpib_read (gpib, n)

Read from gpib interface.

gpib - instance of octave_gpib class.
n - number of bytes to attempt to read of type Integer.

The gpib_read() shall return number of bytes successfully read in count as Integer and the bytes themselves in data as uint8 array. eoi indicates read operation complete

3.3.11 gpib_timeout

Loadable Function: gpib_timeout (gpib, timeout)
Loadable Function: t = gpib_timeout (gpib)

Set new or get existing gpib interface timeout parameter. The timeout value is valid from 0 to 17.

gpib - instance of octave_gpib class.
timeout - Value of 0 means never timeout, 11 means one second and 17 means 1000 seconds (see GPIB documentation (ibtmo) for further details)

If timeout parameter is omitted, the gpib_timeout() shall return current timeout value as the result t.

3.3.12 gpib_write

Loadable Function: n = gpib_write (gpib, data)

Write data to a gpib interface.

gpib - instance of octave_gpib class.
data - data to be written to the gpib interface. Can be either of String or uint8 type.

Upon successful completion, gpib_write() shall return the number of bytes written as the result n.

3.3.13 spoll

Function File: out = spoll (obj)
Function File: [out,statusByte] = spoll (obj)

Serial polls GPIB instruments.

obj is a GPIB object or a cell array of GPIB objects

out GPIB objects ready for service statusByte status Byte

3.3.14 trigger

Function File: trigger (obj)

Triggers GPIB instrument.

obj is a GPIB object


3.4 I2C

3.4.1 @octave_i2c/fclose

Function File: res = fclose (obj)

Closes I2C connection obj

3.4.2 @octave_i2c/fopen

Function File: res = fopen (obj) (dummy)

Opens I2C connection obj

This currently is a dummy function to improve compatibility to MATLAB

3.4.3 @octave_i2c/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from I2C instrument

Inputs

obj is a I2C object.
size Number of values to read. (Default: 100).
precision precision of data.

Outputs

data data values.
count number of values read.
errmsg read operation error message.

3.4.4 @octave_i2c/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to I2C instrument

Inputs

obj is a I2C object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.4.5 @octave_i2c/get

Function File: struct = get (i2c)
Function File: field = get (i2c, property)

Get the properties of i2c object.

Inputs

i2c - instance of octave_i2c class.

property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_i2c/set.

3.4.6 @octave_i2c/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of i2c object.

Inputs

obj - instance of octave_i2c class.
property - name of property.

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’name’

Set the name for the i2c socket.

’remoteaddress’

Set the remote address for the i2c socket.

Outputs

None

See also: @octave_i2c/get.

3.4.7 i2c

Loadable Function: i2c = i2c ([port_path], [address])

Open i2c interface.

Inputs

port_path - the interface device port/path of type String. If omitted defaults to ’/dev/i2c-0’.
address - the slave device address. If omitted must be set using i2c_addr() call.

Outputs

i2c - An instance of octave_i2c class.

Properties

The i2c object has the following properties:

name

Name of the object

remoteaddress

the slave device address

port

The interface driver port (readonly)

3.4.8 i2c_addr

Loadable Function: i2c_addr (i2c, address)
Loadable Function: addr = i2c_addr (i2c)

Set new or get existing i2c slave device address.

Inputs

i2c - instance of octave_i2c class.
address - i2c slave device address of type Integer. The address is passed in the 7 or 10 lower bits of the argument.

Outputs

addr - If address parameter is omitted, the i2c_addr() shall return current i2c slave device address.

3.4.9 i2c_close

Loadable Function: i2c_close (i2c)

Close the interface and release a file descriptor.

Inputs

i2c - instance of octave_i2c class.

Outputs

None

3.4.10 i2c_read

Loadable Function: [data, count] = i2c_read (i2c, n)

Read from i2c slave device.

Inputs

i2c - instance of octave_i2c class.
n - number of bytes to attempt to read of type Integer.

Outputs

The i2c_read() shall return number of bytes successfully read in count as Integer and the bytes themselves in data as uint8 array.

3.4.11 i2c_write

Loadable Function: n = i2c_write (i2c, data)

Write data to a i2c slave device.

Inputs

i2c - instance of octave_i2c class.
data - data, of type uint8, to be written to the slave device.

Outputs

Upon successful completion, i2c_write() shall return the number of bytes written as the result n.


3.5 Modbus

3.5.1 @octave_modbus/get

Function File: struct = get (dev)
Function File: field = get (dev, property)

Get the properties of modbus object.

Inputs

dev - instance of octave_modbus class.
property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_modbus/set.

3.5.2 @octave_modbus/maskWrite

: data = maskWrite (dev, address, andmask, ormask)
: data = maskWrite (dev, address, andmask, ormask, serverid)

Read holding register at address from modbus device dev apply masking and write the change data.

writeregister value = (readregister value AND andMask) OR (orMask AND (NOT andMask))

Inputs

dev - connected modbus device

address - address to read from.

andmask - AND mask to apply to the register

ormask - OR mask to apply to the register

serverId - address to send to (0-247). Default of 1 is used if not specified.

Outputs

data - data read from the device

See also: modbus.

3.5.3 @octave_modbus/read

: data = read (dev, target, address)
: data = read (dev, target, address, count)
: data = read (dev, target, address, count, serverId, precision)

Read data from modbus device dev target target starting at address address.

Inputs

dev - connected modbus device

target - target type to read. One of ’coils’, ’inputs’, ’inputregs’ or ’holdingregs’

address - address to start reading from.

count - number of elements to read. If not provided, count is 1.

serverId - address to send to (0-247). Default of 1 is used if not specified.

precision - Optional precision for how to interpret the read data. Currently known precision values are uint16 (default), int16, uint32, int32, uint64, uint64, single, double.

Outputs

data - data read from the device

See also: modbus.

3.5.4 @octave_modbus/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of modbus object.

Inputs

obj - instance of octave_modbus class.
property - name of property.

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’Name’

Set the stored string name of the object.

’Timeout’

Set the timeout value.

’Numretries’

Set the numretries value.

’ByteOrder’

Set the byteorder value

’WordOrder’

Set the wordorder value

’UserData’

Set the userdata value

Outputs

None

See also: @octave_modbus/get.

3.5.5 @octave_modbus/write

: write (dev, target, address, values)
: read (dev, target, address, values, serverId, precision)

Write data data to modbus device dev target target starting at address address.

Inputs

dev - connected modbus device

target - target type to read. One of ’coils’ or ’holdingregs’

address - address to start reading from.

data - data to write.

serverId - address to send to (0-247). Default of 1 is used if not specified.

precision - Optional precision for how to interpret the write data. Currently known precision values are uint16 (default), int16, uint32, int32, uint64, uint64, single, double.

Outputs

None

See also: modbus.

3.5.6 @octave_modbus/writeRead

: data = writeRead (dev, writeAddress, values, readAddress, readcount)
: data = writeRead (dev, writeAddress, values, readAddress, readcount, serverId)
: data = writeRead (dev, writeAddress, values, writePrecision, readAddress, readCount, readPrecision)

Write data values to the modbus device dev holding registers starting at address writeAddress and then read readCount register values starting at address readAddress.

Inputs

dev - connected modbus device

writeAddress - address to start writing to.

values - data to write to the device.

readAddress - address to start reading from.

readCount - number of elements to read.

serverId - address to send to (0-247). Default of 1 is used if not specified.

precision - Optional precision for how to interpret the read data. Currently known precision values are uint16 (default), int16, uint32, int32, uint64, uint64, single, double.

Outputs

data - data read from the device

See also: modbus.

3.5.7 modbus

Loadable Function: dev = modbus ('tcpip', deviceaddress)
Loadable Function: dev = modbus ('tcpip', deviceaddress, remoteport)
Loadable Function: dev = modbus ('tcpip', deviceaddress, name, value)
Loadable Function: dev = modbus ('serialrtu', serialport)
Loadable Function: dev = modbus ('serialrtu', serialport, name, value)

Open modbus interface using a specified transport of ’tcpip’ or ’serialrtu’.

Inputs

deviceaddress - the device ip address of type String.
remoteport - the device remote port number. If not specified, a default of 502 will be used.
name, value - Optional name value pairs for setting properties of the object.
serialport - the name of the serial port to connect to. It must be specified when transport is ’serialrtu’.

Common Input Name, Value pairs

Timeout

timeout value used for waiting for data

NumRetries

number of retries after a timeout

UserData

Additional data to attach to the object

Serial RTU Input Name, Value pairs

BaudRate

Baudrate for the serial port

DataBits

number of databits for serial port

Parity

Parity for serial port (’odd’, ’even’ or ’none’)

StopBits

number of stopbits for serial port

Outputs

The modbus() shall return instance of octave_modbus class as the result modbus.

Properties

The modbus object has the following public properties:

Name

name assigned to the modbus object

Type

instrument type ’modbus’ (readonly)

Port

Remote port number or serial port name (readonly)

DeviceAddress

Device address if transport was ’tcpip’ (readonly)

Status

status of the object ’open’ or ’closed’ (readonly)

Timeout

timeout value used for waiting for data

NumRetries

number of retries after a timeout

UserData

Additional data to attach to the object


3.6 Parallel

3.6.1 @octave_parallel/fclose

Function File: res = fclose (obj)

Closes parallel connection obj

3.6.2 @octave_parallel/fopen

Function File: res = fopen (obj) (dummy)

Opens parallel interface obj

This currently is a dummy function to improve compatibility to MATLAB

3.6.3 @octave_parallel/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from parallel instrument

Inputs

obj is a parallel object.
size Number of values to read. (Default: 1).
precision precision of data.

Outputs

data The read data.
count values read.
errmsg read operation error message.

3.6.4 @octave_parallel/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to parallel instrument

Inputs

obj is a parallel object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.6.5 parallel

Loadable Function: parallel = parallel ([path], [direction])

Open Parallel interface.

Inputs

path - the interface path of type String. If omitted defaults to ’/dev/parport0’.
direction - the direction of interface drivers of type Integer, see: PP_DATADIR for more info. If omitted defaults to 1 (Input).

Outputs

The parallel() shall return instance of octave_parallel class as the result parallel.

3.6.6 pp_close

Loadable Function: pp_close (parallel)

Close the interface and release a file descriptor.

Inputs

parallel - instance of octave_serial class.

Outputs

None

3.6.7 pp_ctrl

Loadable Function: pp_ctrl (parallel, ctrl)
Loadable Function: c = pp_ctrl (parallel)

Sets or Read the Control lines.

Inputs

parallel - instance of octave_parallel class.
ctrl - control parameter to be set of type Byte.

Outputs

If ctrl parameter is omitted, the pp_ctrl() shall return current Control lines state as the result c.

3.6.8 pp_data

Loadable Function: pp_data (parallel, data)
Loadable Function: d = pp_data (parallel)

Sets or Read the Data lines.

Inputs

parallel - instance of octave_parallel class.
data - data parameter to be set of type Byte.

Outputs

If data parameter is omitted, the pp_data() shall return current Data lines state as the result d.

3.6.9 pp_datadir

Loadable Function: pp_datadir (parallel, direction)
Loadable Function: dir = pp_datadir (parallel)

Controls the Data line drivers.

Normally the computer’s parallel port will drive the data lines, but for byte-wide transfers from the peripheral to the host it is useful to turn off those drivers and let the peripheral drive the signals. (If the drivers on the computer’s parallel port are left on when this happens, the port might be damaged.)

Inputs

parallel - instance of octave_parallel class.
direction - direction parameter of type Integer. Supported values: 0 - the drivers are turned on (Output/Forward direction); 1 - the drivers are turned off (Input/Reverse direction).

Outputs

If direction parameter is omitted, the pp_datadir() shall return current Data direction as the result dir.

3.6.10 pp_stat

Loadable Function: stat = pp_stat (parallel)

Reads the Status lines.

Inputs

parallel - instance of octave_parallel class.

Outputs

The pp_stat() shall return current Status lines state as the result stat.


3.7 Serial (Deprecated)

3.7.1 @octave_serial/fclose

Function File: res = fclose (obj)

Closes SERIAL connection obj

3.7.2 @octave_serial/flushinput

Loadable Function: flushinput (serial)

Flush the pending input, which will also make the BytesAvailable property be 0.

Inputs

serial - instance of octave_serial class.

Outputs

None

See also: srl_flush, flushoutput.

3.7.3 @octave_serial/flushoutput

Loadable Function: flushoutput (serial)

Flush the output buffer.

Inputs

serial - instance of octave_serial class.

Outputs

None

See also: srl_flush, flushinput.

3.7.4 @octave_serial/fopen

Function File: res = fopen (obj) (dummy)

Opens SERIAL interface obj

This currently is a dummy function to improve compatibility to MATLAB

3.7.5 @octave_serial/fprintf

Function File: numbytes = fprintf (obj, template ...)

Writes formatted string template using optional parameters to serial instrument

Inputs

obj is a serial object.
template Format template string

Outputs

numbytes - number of bytes written to the serial device.

3.7.6 @octave_serial/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from serial instrument

Inputs

obj is a serial object.
size Number of values to read. (Default: 100).
precision precision of data.

Outputs

data The read data.
count values read.
errmsg read operation error message.

3.7.7 @octave_serial/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to serial instrument

Inputs

obj is a serial object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.7.8 @octave_serial/get

Function File: struct = get (serial)
Function File: field = get (serial, property)

Get the properties of serial object.

Inputs

serial - instance of octave_serial class.
property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_serial/set.

3.7.9 @octave_serial/serialbreak

Function File: serialbreak (serial)
Function File: serialbreak (serial, time)

Send a break to the serial port

Inputs

serial - serial object
time - number of milliseconds to break for. If not specified a value of 10 will be used.

Outputs

None

See also: serial.

3.7.10 @octave_serial/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of serial object.

Inputs

serial - instance of octave_serial class.
property - name of property.

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’baudrate’

Set the baudrate of serial port. Supported values by instrument-control: 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200 and 230400. The supported baudrate of your serial port may be different.

’bytesize’

Set the bytesize. Supported values: 5, 6, 7 and 8.

’name’

Set the stored string name of the serial object.

’parity’

Set the parity value. Supported values: Even/Odd/None. This Parameter must be of type string. It is case insensitive and can be abbreviated to the first letter only

’stopbits’

Set the number of stopbits. Supported values: 1, 2.

’timeout’

Set the timeout value in tenths of a second. Value of -1 means a blocking call. Maximum value of 255 (i.e. 25.5 seconds).

’requesttosend’

Set the requesttosend (RTS) line.

’dataterminalready’

Set the dataterminalready (DTR) line.

Outputs

None

See also: @octave_serial/get.

3.7.11 @octave_serial/srl_baudrate

Loadable Function: srl_baudrate (serial, baudrate)\
Loadable Function: br = srl_baudrate (serial)

Set new or get existing serial interface baudrate parameter. Only standard values are supported.

Inputs

serial - instance of octave_serial class.
baudrate - the baudrate value used. Supported values: 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600 19200, 38400, 57600, 115200 and 230400.

If baudrate parameter is omitted, the srl_baudrate() shall return current baudrate value as the result br.

Outputs

br - The currently set baudrate

This function is obsolete. Use get and set method instead.

3.7.12 @octave_serial/srl_bytesize

Loadable Function: srl_bytesize (serial, bsize)
Loadable Function: bs = srl_bytesize (serial)

Set new or get existing serial interface byte size parameter.

Inputs

serial - instance of octave_serial class.
bsize - byte size of type Integer. Supported values: 5/6/7/8.

If bsize parameter is omitted, the srl_bytesize() shall return current byte size value or in case of unsupported setting -1, as the result bs.

This function is obsolete. Use get and set method instead.

Outputs

bs -the currently set byte size.

3.7.13 @octave_serial/srl_close

Loadable Function: srl_close (serial)

Close the interface and release a file descriptor.

Inputs

serial - instance of octave_serial class.

This function is obsolete. Use fclose() method instead.

Outputs

None

3.7.14 @octave_serial/srl_flush

Loadable Function: srl_flush (serial, [q])

Flush the pending input/output.

Inputs

serial - instance of octave_serial class.
q - queue selector of type Integer. Supported values:

0

flush untransmitted output

1

flush pending input

2

flush both pending input and untransmitted output.

If q parameter is omitted, the srl_flush() shall flush both, input and output buffers.

Outputs

None

3.7.15 @octave_serial/srl_parity

Loadable Function: srl_parity (serial, parity)
Loadable Function: p = srl_parity (serial)

Set new or get existing serial interface parity parameter. Even/Odd/None values are supported.

Inputs

serial - instance of octave_serial class.
parity - parity value of type String. Supported values: Even/Odd/None (case insensitive, can be abbreviated to the first letter only)

If parity parameter is omitted, the srl_parity() shall return current parity value as the result p.

This function is obsolete. Use get and set method instead.

Outputs

p - The currently set parity

3.7.16 @octave_serial/srl_stopbits

Loadable Function: srl_stopbits (serial, stopb)
Loadable Function: sb = srl_stopbits (serial)

Set new or get existing serial interface stop bits parameter. Only 1 or 2 stop bits are supported.

Inputs

serial - instance of octave_serial class.
stopb - number of stop bits used. Supported values: 1, 2.

Outputs

If stopb parameter is omitted, the srl_stopbits() shall return current stop bits value as the result sb.

This function is obsolete. Use get and set method instead.

3.7.17 @octave_serial/srl_timeout

Loadable Function: srl_timeout (serial, timeout)
Loadable Function: t = srl_timeout (serial)

Set new or get existing serial interface timeout parameter used for srl_read() requests. The timeout value is specified in tenths of a second.

Inputs

serial - instance of octave_serial class.
timeout - srl_read() timeout value in tenths of a second. A value of -1 means a blocking call. Maximum value of 255 (i.e. 25.5 seconds).

Outputs

If timeout parameter is omitted, the srl_timeout() shall return current timeout value as the result t.

This function is obsolete. Use get and set method instead.

3.7.18 serial

Loadable Function: serial = serial ([path], [baudrate], [timeout])

Open serial interface.

Inputs

path - the interface path of type String.
baudrate - the baudrate of interface. If omitted defaults to 115200.
timeout - the interface timeout value. If omitted defaults to blocking call.

Outputs

The serial() shall return an instance of octave_serial class as the result serial.

Properties

The serial object has the following public properties:

name

name assigned to the object

type

instrument type ’serial’ (readonly)

port

OS specific port name (readonly)

status

status of the object ’open’ or ’closed’ (readonly)

timeout

timeout value used for waiting for data

bytesavailable

number of bytes currently available to read (readonly)

stopbits

number of stopbits to use

requesttosend

request to send state - ’on’ or ’off’

parity

Parity setting ’none’, ’even’, ’odd’

bytesize

Number of bits to a byte (7 or 8)

baudrate

Baudrate setting

dataterminalready

state of dataterminal ready - ’on’ or ’off’

pinstatus

current state of pins (readonly)

3.7.19 seriallist

Function File: list = seriallist ()

Returns a list of all serial ports detected in the system.

Inputs

None

Outputs

list is a string cell array of serial ports names detected in the system.

See also: instrhwinfo("serial").

3.7.20 srl_read

Loadable Function: [data, count] = srl_read (serial, n)

Read from serial interface.

Inputs

serial - instance of octave_serial class.
n - number of bytes to attempt to read of type Integer.

Outputs

The srl_read() shall return number of bytes successfully read in count as Integer and the bytes themselves in data as uint8 array.

3.7.21 srl_write

Loadable Function: n = srl_write (serial, data)

Write data to a serial interface.

Inputs

serial - instance of octave_serial class.
data - data to be written to the serial interface. Can be either of String or uint8 type.

Outputs

Upon successful completion, srl_write() shall return the number of bytes written as the result n.


3.8 Serial Port

3.8.1 @octave_serialport/configureTerminator

Function File: configureTerminator (serial, term)
Function File: configureTerminator (serial, readterm, writeterm)

Set terminator for ASCII string manipulation

Inputs

serial - serialport object
term - terminal value for both read and write
readterm = terminal value type for read data
writeterm = terminal value for written data

The terminal can be either strings "cr", "lf" (default), "lf/cr" or an integer between 0 to 255.

Outputs

None

See also: serialport.

3.8.2 @octave_serialport/flush

: data = flush (dev)
: data = flush (dev, "input")
: data = flush (dev, "output")

Flush the serial port buffers

Inputs

dev - connected serialport device

If an additional parameter is provided of "input" or "output", then only the input or output buffer will be flushed

Outputs

None

See also: serialport.

3.8.3 @octave_serialport/fprintf

Function File: numbytes = fprintf (obj, template ...)

Writes formatted string template using optional parameters to serialport instrument

Inputs

obj is a serialport object.
template Format template string

Outputs

numbytes - number of bytes written to the serial device.

3.8.4 @octave_serialport/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from serial port instrument

Inputs

obj is a serialport object.
size Number of values to read.
precision precision of data.

Outputs

data The read data.
count number of values read.
errmsg read operation error message.

3.8.5 @octave_serialport/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to serial port instrument

Inputs

obj is a serial port object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.8.6 @octave_serialport/get

Function File: struct = get (serial)
Function File: field = get (serial, property)

Get the properties of serialport object.

Inputs

serial - instance of octave_serialport class.
property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_serial/set.

3.8.7 @octave_serialport/getpinstatus

Function File: status getpinstatus (serial)

Get status of serial pins

Inputs

serial - serial object

Outputs

status - a structure with the logic names of ClearToSend, DataSetReady, CarrierDetect, and RingIndicator

See also: serialport.

3.8.8 @octave_serialport/read

: data = read (dev, count)
: data = read (dev, count, precision)

Read a specified number of values from a serialport using optional precision for valuesize.

Inputs

dev - connected serialport device

count - number of elements to read

precision - Optional precision for the output data read data. Currently known precision values are uint8 (default), int8, uint16, int16, uint32, int32, uint64, uint64

Outputs

data - data read from the device

See also: serialport.

3.8.9 @octave_serialport/serialbreak

Function File: serialbreak (serial)
Function File: serialbreak (serial, time)

Send a break to the serial port

Inputs

serial - serialport object
time - number of milliseconds to break for. If not specified a value of 10 will be used.

Outputs

None

See also: serial.

3.8.10 @octave_serialport/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of serialport object.

Inputs

serial - instance of octave_serialport class.
property - name of property.

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’baudrate’

Set the baudrate of serial port. Supported values by instrument-control: 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200 and 230400. The supported baudrate of your serial port may be different.

’bytesize’

Set the bytesize. Supported values: 5, 6, 7 and 8.

’name’

Set the stored string name of the serial object.

’parity’

Set the parity value. Supported values: Even/Odd/None. This Parameter must be of type string. It is case insensitive and can be abbreviated to the first letter only

’stopbits’

Set the number of stopbits. Supported values: 1, 2.

’timeout’

Set the timeout value in tenths of a second. Value of -1 means a blocking call. Maximum value of 255 (i.e. 25.5 seconds).

’requesttosend’

Set the requesttosend (RTS) line.

’dataterminalready’

Set the dataterminalready (DTR) line.

Outputs

None

See also: @octave_serialport/-get.

3.8.11 @octave_serialport/setDTR

: setDTR (dev, true_false)

Set the state of the DTR line

Inputs

dev - connected serial device.
true_false - state to set the line.

Outputs

None

See also: serialport, getpinstatus, setRTS.

3.8.12 @octave_serialport/setRTS

: setRTS (dev, true_false)

Set the state of the RTS line

Inputs

dev - connected serial device.
true_false - state to set the line.

Outputs

None

See also: serialport, getpinstatus.

3.8.13 @octave_serialport/write

Function File: numbytes = write (obj, data)
Function File: numbytes = write (obj, data, precision)

Writes data to serialport instrument

Inputs

obj is a serialport object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.8.14 serialport

Loadable Function: serial = serialport ([path], [baudrate])
Loadable Function: serial = serialport ([path], [propname, propvalue])

Open serial port interface.

Inputs

path - the interface path of type String.
baudrate - the baudrate of interface.
propname,propvalue - property name/value pairs.

Known input properties:

BaudRate

Numeric baudrate value

Timeout

Numeric timeout value in seconds or -1 to wait forever

StopBits

number of stopbits to use

Parity

Parity setting ’none’, ’even’, ’odd’

DataBits

Number of bits to a byte (5 to 8)

FlowControl

Number of bits to a byte ’none’, ’hardware’, ’software’

Tag

User settable string to identify the port.

Outputs

The serialport() shall return an instance of octave_serialport class as the result serial.

Properties

The serial object has the following public properties:

Name

name assigned to the object

Type

instrument type ’serial’ (readonly)

Port

OS specific port name (readonly)

Status

status of the object ’open’ or ’closed’ (readonly)

Timeout

timeout value used for waiting for data

NumBytesAvailable

number of bytes currently available to read (readonly)

NumBytesWritten

number of bytes written (readonly)

StopBits

number of stopbits to use

Parity

Parity setting ’none’, ’even’, ’odd’

DataBits

Number of bits to a byte (5 to 8)

BaudRate

Baudrate setting

FlowControl

Number of bits to a byte ’none’, ’hardware’, ’software’

PinStatus

current state of pins (readonly)

UserData

user defined data

Tag

user defined tag name

3.8.15 serialportlist

Function File: list = serialportlist ()
Function File: list = serialportlist ("all")
Function File: list = serialportlist ("available")

Returns a list of all serial ports detected in the system.

Inputs

’all’ - show all serial ports (same as providing no arguments) ’available’ - show only serial ports that are available for use

Outputs

list is a string cell array of serial ports names detected in the system.

See also: instrhwinfo("serialport").


3.9 SPI

3.9.1 @octave_spi/fclose

Function File: res = fclose (obj)

Closes SPI connection obj

3.9.2 @octave_spi/fopen

Function File: res = fopen (obj) (dummy)

Opens SPI connection obj

This currently is a dummy function to improve compatibility to MATLAB

3.9.3 @octave_spi/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from a SPI instrument

Inputs

obj is a SPI object.
size Number of values to read. (Default: 10).
precision precision of data.

Outputs

data data values.
count number of values read.
errmsg read operation error message.

3.9.4 @octave_spi/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to SPI instrument

Inputs

obj is a SPI object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.9.5 @octave_spi/get

Function File: struct = get (spi)
Function File: field = get (spi, property)

Get the properties of spi object.

Inputs

spi - instance of octave_spi class.

property - name of property.

Properties

’name’

Name for the spi socket.

’bitrate’

The bitrate for the spi object.

’clockpolarity’

The clock polarity for the spi object of ’idlehigh’ or ’idlelow’.

’clockphase’

The clock phase for the spi object of ’firstedge’ or ’secondedge’.

’port’

The device port name.

’status’

The device status of ’open’ or ’closed’

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_spi/set.

3.9.6 @octave_spi/read

Function File: data = read (obj)
Function File: data = read (obj, size)

Reads data from SPI instrument

Inputs

obj is a SPI object.
size Number of values to read. (Default: 10).

Outputs

data data values.

3.9.7 @octave_spi/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of spi object.

Inputs

obj - instance of octave_spi class.
property - name of property.

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’name’

Set the name for the spi socket.

’bitrate’

Set the bitrate for the spi object.

’clockpolarity’

Set the clock polarity for the spi object of ’idlehigh’ or ’idlelow’.

’clockphase’

Set the clock phase for the spi object of ’firstedge’ or ’secondedge’.

Outputs

None

See also: @octave_spi/get.

3.9.8 @octave_spi/write

Function File: numbytes = fwrite (obj, data)

Writes data to SPI instrument

Inputs

obj is a SPI object.
data data to write.

Outputs

returns number of bytes written.

3.9.9 @octave_spi/writeAndRead

Function File: data = writeAndRead (obj, wrdata)

Writes and reads data from SPI instrument

Inputs

obj is a SPI object.
wrdata Data to write.

Outputs

data data values read.

3.9.10 spi

Loadable Function: spi = spi ([port_path])
Loadable Function: spi = spi ([port_path], [propname, propvalue])

Open a spi interface.

Inputs

port_path - the interface device port/path of type String. If omitted defaults to ’/dev/spi-0’.
propname,propvalue - property name/value pairs.

Known input properties:

name

Name of the object

bitrate

Numeric bitrate value

clockpolarity

Clock polarity: idlehigh or idlelow.

clockphase

Clock phase value: firstedge or secondedge

Outputs

spi - An instance of octave_spi class.

Properties

The spi object has the following properties:

name

Name of the object

status

Open or closed status of object (readonly).

bitrate

Numeric bitrate value

clockpolarity

Clock polarity: idlehigh or idlelow.

clockphase

Clock phase value: firstedge or secondedge

port

The interface driver port (readonly)

3.9.11 spi_close

Loadable Function: spi_close (spi)

Close the interface and release a file descriptor.

Inputs

spi - instance of octave_spi class.

Outputs

None

3.9.12 spi_read

Loadable Function: [data, count] = spi_read (spi, n)

Read from spi slave device.

Inputs

spi - instance of octave_spi class.
n - number of bytes to attempt to read of type Integer.

Outputs

The spi_read() shall return number of bytes successfully read in count as Integer and the bytes themselves in data as uint8 array.

3.9.13 spi_write

Loadable Function: n = spi_write (spi, data)

Write data to a spi slave device.

Inputs

spi - instance of octave_spi class.
data - data, of type uint8, to be written to the slave device.

Outputs

Upon successful completion, spi_write() shall return the number of bytes written as the result n.

3.9.14 spi_writeAndRead

Loadable Function: rddata = spi_writeAndRead (spi, wrdata)

Write data to a spi slave device and then read same number of values.

Inputs

spi - instance of octave_spi class.
wrdata - data, of type uint8, to be written to the slave device.

Outputs

Upon successful completion, spi_writeAndRead() shall return the bytes read.


3.10 TCP (Deprecated)

3.10.1 @octave_tcp/fclose

Function File: res = fclose (obj)

Closes TCP connection obj

3.10.2 @octave_tcp/flush

: data = flush (dev)
: data = flush (dev, "input")
: data = flush (dev, "output")

Flush the tcp socket buffers

Inputs

dev - connected tcp device

If an additional parameter is provided of "input" or "output", then only the input or output buffer will be flushed

Outputs

None

See also: serialport.

3.10.3 @octave_tcp/flushinput

Loadable Function: flushinput (tcp)

Flush the pending input, which will also make the BytesAvailable property be 0.

Inputs

tcp - instance of octave_tcp class.

Outputs

None.

See also: flushoutput.

3.10.4 @octave_tcp/flushoutput

Loadable Function: flushoutput (tcp)

Flush the output buffer.

Inputs

tcp - instance of octave_tcp class.

Outputs

None.

See also: flushinput.

3.10.5 @octave_tcp/fopen

Function File: res = fopen (obj) (dummy)

Opens TCP connection obj

This currently is a dummy function to improve compatibility to MATLAB

3.10.6 @octave_tcp/fprintf

Function File: numbytes = fprintf (obj, template ...)

Writes formatted string template using optional parameters to TCP instrument

Inputs

obj is a TCP object.
template Format template string

Outputs

Number of characters written

3.10.7 @octave_tcp/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from TCP instrument

Inputs

obj is a TCP object.
size Number of values to read. (Default: 100).
precision precision of data.

Outputs

data data read.
count values read.
errmsg read operation error message.

3.10.8 @octave_tcp/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to TCP instrument

Inputs

obj is a TCP object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.10.9 @octave_tcp/get

Function File: struct = get (tcp)
Function File: field = get (tcp, property)

Get the properties of tcp object.

Inputs

tcp - instance of octave_tcp class.
property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_tcp/set.

3.10.10 @octave_tcp/read

Function File: data = read (obj)
Function File: data = read (obj, size)
Function File: data = read (obj, size, datatype)

Reads data from TCP instrument

Inputs

obj is a TCP object.
size Number of values to read. (Default: 100).
datatype datatype of data.

Outputs

data data read.

3.10.11 @octave_tcp/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of tcp object.

Inputs

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’name’

Set the name for the tcp socket.

’remotehost’

Set the remote host name for the tcp socket.

’remoteport’

Set the remote port for the tcp socket.

’timeout’

Set the timeout value in seconds. Value of -1 means a blocking call.

Outputs

None

See also: @octave_tcp/get.

3.10.12 @octave_tcp/write

Function File: numbytes = write (obj, data)
Function File: numbytes = write (obj, data, datatype)

Writes data to TCP instrument

Inputs

obj is a TCP object.
data data to write.
datatype datatype of data. If not specified, it defaults to "uint8".

Outputs

returns number of bytes written.

3.10.13 tcp

Loadable Function: tcp = tcp ()
Loadable Function: tcp = tcp (ipaddress)
Loadable Function: tcp = tcp (ipaddress, port)
Loadable Function: tcp = tcp (ipaddress, port, timeout)
Loadable Function: tcp = tcp (ipaddress, [propertyname, propertyvalue])
Loadable Function: tcp = tcp (ipaddress, port, [propertyname, propertyvalue])

Open tcp interface.

Inputs

ipaddress - the ip address of type String. If omitted defaults to ’127.0.0.1’.
port - the port number to connect. If omitted defaults to 23.
timeout - the interface timeout value. If omitted defaults to blocking call.
propname,propvalue - property name/value pairs.

Known input properties:

name

name value

timeout

Numeric timeout value or -1 to wait forever

Outputs

The tcp() shall return instance of octave_tcp class as the result tcp.

Properties

The tcp object has the following public properties:

name

name assigned to the tcp object

type

instrument type ’tcp’ (readonly)

localport

local port number (readonly)

remoteport

remote port number

remotehost

remote host

status

status of the object ’open’ or ’closed’ (readonly)

timeout

timeout value in seconds used for waiting for data

bytesavailable

number of bytes currently available to read (readonly)

3.10.14 tcp_close

Loadable Function: tcp_close (tcp)

Close the interface and release a file descriptor.

Inputs

tcp - instance of octave_tcp class.

Outputs

None

3.10.15 tcp_read

Loadable Function: [data, count] = tcp_read (tcp, n, timeout)

Read from tcp interface.

Inputs

tcp - instance of octave_tcp class.
n - number of bytes to attempt to read of type Integer
timeout - timeout in ms if different from default of type Integer

Outputs

count - number of bytes successfully read as an Integer
data - data bytes themselves as uint8 array.

3.10.16 tcp_timeout

Loadable Function: tcp_timeout (tcp, timeout)
Loadable Function: t = tcp_timeout (tcp)

Set new or get existing tcp interface timeout parameter used for tcp_read() requests. The timeout value is specified in milliseconds.

Inputs

tcp - instance of octave_tcp class.
timeout - tcp_read() timeout value in milliseconds. Value of -1 means a blocking call.

Outputs

If timeout parameter is omitted, the tcp_timeout() shall return current timeout value as the result t.

3.10.17 tcp_write

Loadable Function: n = tcp_write (tcp, data)

Write data to a tcp interface.

Inputs

tcp - instance of octave_tcp class.
data - data to be written to the tcp interface. Can be either of String or uint8 type.

Outputs

Upon successful completion, tcp_write() shall return the number of bytes written as the result n.

3.10.18 tcpip

Function File: tcp = tcpip (host, [port], [PropertyName, PropertyValue...])

Matlab compatible wrapper to the tcp interface.

NOTE: tcpip has been deprecated. Use tcpclient instead

Inputs

host - the host name or ip.
port - the port number to connect. If omitted defaults to 80.
PropertyName, PropertyValue - Optional property name, value pairs to set on the tcp object.

Properties

Currently the only known properties are "timeout" and "name".

Outputs

tcpip will return an instance of octave_tcp class as the result.


3.11 TCP Client

3.11.1 @octave_tcpclient/configureTerminator

Function File: configureTerminator (tcp, term)
Function File: configureTerminator (tcp, readterm, writeterm)

Set terminator on a tcpclient object for ASCII string manipulation

Inputs

tcp - tcpclient object
term - terminal value for both read and write
readterm = terminal value type for read data
writeterm = terminal value for written data

The terminal can be either strings "cr", "lf" (default), "lf/cr" or an integer between 0 to 255.

Outputs

None

See also: tcpport.

3.11.2 @octave_tcpclient/flush

: data = flush (dev)
: data = flush (dev, "input")
: data = flush (dev, "output")

Flush the tcpclient socket buffers

Inputs

dev - connected tcpclient device

If an additional parameter is provided of "input" or "output", then only the input or output buffer will be flushed

Outputs

None

See also: serialport.

3.11.3 @octave_tcpclient/get

Function File: struct = get (tcpclient)
Function File: field = get (tcpclient, property)

Get the properties of tcpclient object.

Inputs

tcpclient - instance of octave_tcpclient class.
property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_tcpclient/set.

3.11.4 @octave_tcpclient/read

Function File: data = read (obj)
Function File: data = read (obj, size)
Function File: data = read (obj, size, datatype)

Reads data from TCP instrument

Inputs

obj is a TCP object.
size Number of values to read. (Default: NumBytesAvailable).
datatype datatype of data.

Outputs

data data read.

3.11.5 @octave_tcpclient/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of tcpclient object.

Inputs

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’Name’

Set the name for the tcpclient socket.

’UserData’

Set user data for the tcpclient socket.

’Timeout’

Set the timeout value in seconds. Value of -1 means a blocking call.

’Tag’

Set user tag to identify the port

Outputs

None

See also: @octave_tcpclient/get.

3.11.6 @octave_tcpclient/write

Function File: numbytes = write (obj, data)
Function File: numbytes = write (obj, data, datatype)

Writes data to TCP instrument

Inputs

obj is a TCPclient object.
data data to write.
datatype datatype of data. If not specified, it defaults to "uint8".

Outputs

returns number of bytes written.

3.11.7 tcpclient

Loadable Function: tcpclient = tcpclient (ipaddress, port)
Loadable Function: tcpclient = tcpclient (ipaddress, port, [propertyname, propertyvalue])

Open tcpclient interface.

Inputs

ipaddress - the ip address of type String.
port - the port number to connect.
propname,propvalue - property name/value pairs.

Known input properties:

Name

name value

Tag

tag value

Timeout

Numeric timeout value or -1 to wait forever

EnableTransferDelay

Boolean to enable or disable the nagle algorithm for delay transfer.

UserData

User data value.

Outputs

The tcpclient() shall return instance of octave_tcpclient class as the result tcpclient.

Properties

The tcpclient object has the following public properties:

Name

name assigned to the tcpclient object

Tag

user tag assigned to the tcpclient object

Type

instrument type ’tcpclient’ (readonly)

Port

remote port number (Readonly)

Address

remote host address (Readonly)

Status

status of the object ’open’ or ’closed’ (readonly)

Timeout

timeout value in seconds used for waiting for data

NumBytesAvailable

number of bytes currently available to read (readonly)

NumBytesWritten

number of bytes currently available to read (readonly)

ByteOrder

Byte order for data (currently not used)

Terminator

Terminator value used for string data (currently not used)

UserData

User data

EnableTransferDelay

Bool for whether transfer delay is enabled. (Read only)


3.12 TCP Server

3.12.1 @octave_tcpserver/configureTerminator

Function File: configureTerminator (tcp, term)
Function File: configureTerminator (tcp, readterm, writeterm)

Set terminator on a tcpserver object for ASCII string manipulation

Inputs

tcp - tcpserver object
term - terminal value for both read and write
readterm = terminal value type for read data
writeterm = terminal value for written data

The terminal can be either strings "cr", "lf" (default), "lf/cr" or an integer between 0 to 255.

Outputs

None

See also: tcpport.

3.12.2 @octave_tcpserver/flush

: data = flush (dev)
: data = flush (dev, "input")
: data = flush (dev, "output")

Flush the tcpserver socket buffers

Inputs

dev - connected tcpserver device

If an additional parameter is provided of "input" or "output", then only the input or output buffer will be flushed

Outputs

None

See also: serialport.

3.12.3 @octave_tcpserver/get

Function File: struct = get (tcpserver)
Function File: field = get (tcpserver, property)

Get the properties of tcpserver object.

Inputs

tcpserver - instance of octave_tcpserver class.
property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_tcpserver/set.

3.12.4 @octave_tcpserver/read

Function File: data = read (obj)
Function File: data = read (obj, size)
Function File: data = read (obj, size, datatype)

Reads data from TCP instrument

Inputs

obj is a TCP Server object.
size Number of values to read. (Default: NumBytesAvailable).
datatype datatype of data.

Outputs

data data read.

3.12.5 @octave_tcpserver/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of tcpserver object.

Inputs

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’Name’

Set the name for the tcpserver socket.

’UserData’

Set user data for the tcpserver socket.

’Timeout’

Set the timeout value in seconds. Value of -1 means a blocking call.

Outputs

None

See also: @octave_tcpserver/get.

3.12.6 @octave_tcpserver/write

Function File: numbytes = write (obj, data)
Function File: numbytes = write (obj, data, datatype)

Writes data to TCP instrument

Inputs

obj is a TCPServer object.
data data to write.
datatype datatype of data. If not specified, it defaults to "uint8".

Outputs

returns number of bytes written.

3.12.7 tcpserver

Loadable Function: tcpserver = tcpserver (ipaddress, port)
Loadable Function: tcpserver = tcpserver (port)
Loadable Function: tcpserver = tcpserver (…, [propertyname, propertyvalue])

Open tcpserver interface.

Inputs

ipaddress - the ip address of type String.
port - the port number to bind.
propname,propvalue - property name/value pairs.

Known input properties:

Name

name value

Timeout

Numeric timeout value or -1 to wait forever

UserData

User data value.

Outputs

The tcpserver() shall return instance of octave_tcpserver class as the result tcpserver.

Properties

The tcpserver object has the following public properties:

Connected

boolean flag for when connected to a client (Readonly)

ClientPort

connected client port number (Readonly)

ClientAddress

connected client address (Readonly)

Name

name assigned to the tcpserver object

Type

instrument type ’tcpserver’ (readonly)

ServerPort

server port number (Readonly)

ServerAddress

server address (Readonly)

Status

status of the object ’open’ or ’closed’ (readonly)

Timeout

timeout value in seconds used for waiting for data

NumBytesAvailable

number of bytes currently available to read (readonly)

NumBytesWritten

number of bytes currently available to read (readonly)

ByteOrder

Byte order for data (currently not used)

Terminator

Terminator value used for string data (currently not used)

UserData

User data


3.13 UDP (Deprecated)

3.13.1 @octave_udp/fclose

Function File: res = fclose (obj)

Closes UDP connection obj

3.13.2 @octave_udp/flush

: data = flush (dev)
: data = flush (dev, "input")
: data = flush (dev, "output")

Flush the udp socket buffers

Inputs

dev - open udp device

If an additional parameter is provided of "input" or "output", then only the input or output buffer will be flushed

Outputs

None

See also: udp.

3.13.3 @octave_udp/flushinput

Loadable Function: flushinput (udp)

Flush the pending input, which will also make the BytesAvailable property be 0.

Inputs

udp - instance of octave_udp class.

Outputs

None

See also: flushoutput.

3.13.4 @octave_udp/flushoutput

Loadable Function: flushoutput (udp)

Flush the output buffer.

Inputs

udp - instance of octave_udp class.

Outputs

None

See also: flushinput.

3.13.5 @octave_udp/fopen

Function File: res = fopen (obj) (dummy)

Opens UDP connection obj This currently is a dummy function to improve compatibility to MATLAB

3.13.6 @octave_udp/fprintf

Function File: numbytes = fprintf (obj, template ...)

Writes formatted string template using optional parameters to UDP instrument

Inputs

obj is a UDP object.
template Format template string.

Outputs

numbytes is the number of bytes written to the device

3.13.7 @octave_udp/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from UDP instrument

Inputs

obj is a UDP object.
size Number of values to read. (Default: 100).
precision precision of data.

Outputs

data data values.
count number of values read.
errmsg read operation error message.

3.13.8 @octave_udp/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to UDP instrument

Inputs

obj is a UDP object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.13.9 @octave_udp/get

Function File: struct = get (udp)
Function File: field = get (udp, property)

Get the properties of udp object.

Inputs

udp - instance of octave_udp class.

property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_udp/set.

3.13.10 @octave_udp/read

Function File: data = read (obj)
Function File: data = read (obj, size)
Function File: data = read (obj, size, datatype)

Reads data from UDP instrument

Inputs

obj is a UDP object.
size Number of values to read. (Default: BytesAvailable).
datatype datatype of data.

Outputs

data data read.

3.13.11 @octave_udp/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of udp object.

Inputs

obj - instance of octave_udp class.
property - name of property.

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’name’

Set the name for the udp socket.

’remotehost’

Set the remote host name for the udp socket.

’remoteport’

Set the remote port for the udp socket.

’timeout’

Set the timeout value in seconds. Value of -1 means a blocking call.

Outputs

None

See also: @octave_udp/get.

3.13.12 @octave_udp/write

Function File: numbytes = write (obj, data)
Function File: numbytes = write (obj, data, destinationAddress, destinationPort))
Function File: numbytes = write (obj, data, datatype)
Function File: numbytes = write (obj, data, datatype, destinationAddress, destinationPort)

Writes data to UDP instrument

Inputs

obj is a UDP object.
data data to write.
datatype datatype of data. If not specified defaults to uint8.
destinationAddress ipaddress to send to. If not specified, use the remote address.
destinationPort port to send to. If not specified, use the remote port.

Outputs

returns number of bytes written.

3.13.13 udp

Loadable Function: udp = udp ()
Loadable Function: udp = udp (remoteipaddress, remoteport)
Loadable Function: udp = udp (remoteipaddress, remoteport, [propertyname, propertyvalue ...])

Open udp interface.

Inputs

remoteipaddress - the ip address of type String. If omitted defaults to ’127.0.0.1’.
remoteport - the port number to connect. If omitted defaults to 23.
localport - the local port number to bind. If omitted defaults to 0
propertyname, propertyvalue - property name/value pair

Outputs

The udp() shall return instance of octave_udp class as the result udp.

Properties

The udp object has the following public properties:

name

name assigned to the udp object

type

instrument type ’udp’ (readonly)

localport

local port number (readonly)

localhost

local host address (readonly)

remoteport

remote port number

remotehost

remote host

status

status of the object ’open’ or ’closed’ (readonly)

timeout

timeout value in seconds used for waiting for data

bytesavailable

number of bytes currently available to read (readonly)

3.13.14 udp_close

Loadable Function: udp_close (udp)

Close the interface and release a file descriptor.

Inputs

udp - instance of octave_udp class.

Inputs

None

3.13.15 udp_demo

Function File: result = udp_demo ()

Run test SNTP demonstration for udp class

See also: udp.

3.13.16 udp_read

Loadable Function: [data, count] = udp_read (udp, n, timeout)

Read from udp interface.

Inputs

udp - instance of octave_udp class.
n - number of bytes to attempt to read of type Integer
timeout - timeout in ms if different from default of type Integer

Outputs

The udp_read() shall return number of bytes successfully read in count as Integer and the bytes themselves in data as uint8 array.

3.13.17 udp_timeout

Loadable Function: udp_timeout (udp, timeout)
Loadable Function: t = udp_timeout (udp)

Set new or get existing udp interface timeout parameter used for udp_read() requests. The timeout value is specified in milliseconds.

Inputs

udp - instance of octave_udp class.
timeout - udp_read() timeout value in milliseconds. Value of -1 means a blocking call.

Outputs

If timeout parameter is omitted, the udp_timeout() shall return current timeout value as the result t.

3.13.18 udp_write

Loadable Function: n = udp_write (udp, data)

Write data to a udp interface.

Inputs

udp - instance of octave_udp class.
data - data to be written to the udp interface. Can be either of String or uint8 type.

Outputs

Upon successful completion, udp_write() shall return the number of bytes written as the result n.


3.14 UDP Port

3.14.1 @octave_udpport/configureMulticast

: data = configureMulticast((dev, address)
: data = configureMulticast((dev, "off")

Configure udpport device to receive multicast data

Inputs

dev - open udpport device

If address is ’off’ disable udp multicast. Otherwise it is the multicast address to use.

Outputs

None

See also: udpport.

3.14.2 @octave_udpport/configureTerminator

Function File: configureTerminator (udp, term)
Function File: configureTerminator (udp, readterm, writeterm)

Set terminator for ASCII string manipulation

Inputs

udp - udpport object
term - terminal value for both read and write
readterm = terminal value type for read data
writeterm = terminal value for written data

The terminal can be either strings "cr", "lf" (default), "lf/cr" or an integer between 0 to 255.

Outputs

None

See also: udpport.

3.14.3 @octave_udpport/flush

: data = flush (dev)
: data = flush (dev, "input")
: data = flush (dev, "output")

Flush the udpport socket buffers

Inputs

dev - open udpport device

If an additional parameter is provided of "input" or "output", then only the input or output buffer will be flushed

Outputs

None

See also: udpport.

3.14.4 @octave_udpport/fprintf

Function File: numbytes = fprintf (obj, template ...)

Writes formatted string template using optional parameters to UDP instrument

Inputs

obj is a UDPPort object.
template Format template string.

Outputs

numbytes is the number of bytes written to the device

3.14.5 @octave_udpport/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from UDP instrument

Inputs

obj is a UDP port object.
size Number of values to read. (Default: 100).
precision precision of data.

Outputs

data data values.
count number of values read.
errmsg read operation error message.

3.14.6 @octave_udpport/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to UDP instrument

Inputs

obj is a UDP port object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.14.7 @octave_udpport/get

Function File: struct = get (udpport)
Function File: field = get (udpport, property)

Get the properties of udpport object.

Inputs

udpport - instance of octave_udpport class.

property - name of property.

Outputs

When property was specified, return the value of that property.
otherwise return the values of all properties as a structure.

See also: @octave_udpport/set.

3.14.8 @octave_udpport/read

Function File: data = read (obj)
Function File: data = read (obj, size)
Function File: data = read (obj, size, datatype)

Reads data from UDP instrument

Inputs

obj is a UDP object.
size Number of values to read. (Default: BytesAvailable).
datatype datatype of data.

Outputs

data data read.

3.14.9 @octave_udpport/set

Function File: set (obj, property,value)
Function File: set (obj, property,value,…)

Set the properties of udpport object.

Inputs

obj - instance of octave_udpport class.
property - name of property.

If property is a cell so must be value, it sets the values of all matching properties.

The function also accepts property-value pairs.

Properties

’Name’

Set the name for the udpport socket.

’UserData’

Set the user data of the object.

’Tag’

Set the user tag to identify the port.

’Timeout’

Set the timeout value in seconds. Value of -1 means a blocking call.

Outputs

None

See also: @octave_udpport/get.

3.14.10 @octave_udpport/write

Function File: numbytes = write (obj, data)
Function File: numbytes = write (obj, data, destinationAddress, destinationPort))
Function File: numbytes = write (obj, data, datatype)
Function File: numbytes = write (obj, data, datatype, destinationAddress, destinationPort)

Writes data to UDP instrument

Inputs

obj is a UDPPort object.
data data to write.
datatype datatype of data. If not specified defaults to uint8.
destinationAddress ipaddress to send to. If not specified, use the previously used remote address.
destinationPort port to send to. If not specified, use the remote port.

Outputs

returns number of bytes written.

3.14.11 @octave_udpport/writeline

: writeline (dev, data)
: writeline (dev, data, destaddr, destport)

Write data to a udpport including terminator value

Inputs

dev - connected device

data - ASCII data to write

destaddr - Destination address

destport - Destination port

Where the address and port is not specified, the previously used address and port is used.

Outputs

None

See also: flushoutput.

3.14.12 udpport

Loadable Function: udp = udpport ()
Loadable Function: udp = udpport (propertyname, propertyvalue ...)

Open udpport interface.

Inputs

propertyname, propertyvalue - property name/value pair

Known input properties:

Name

name assigned to the udp object

LocalPort

local port number

LocalHost

local host address

Timeout

timeout value in seconds used for waiting for data

EnablePortSharing

Boolean if the socket has port sharing enabled (readonly)

Outputs

The udpport() shall return instance of octave_udp class as the result udp.

Properties

The udp object has the following public properties:

Name

name assigned to the udp object

Tag

user tag assigned to the udp object

Type

instrument type ’udpport’ (readonly)

LocalPort

local port number (readonly)

LocalHost

local host address (readonly)

Status

status of the object ’open’ or ’closed’ (readonly)

Timeout

timeout value in seconds used for waiting for data

NumBytesAvailable

number of bytes currently available to read (readonly)

MulticastGroup

multicast group socket is subscribed to (readonly)

EnableMultcast

Boolean if the socket has any multicast group it is subscribed to (readonly)

EnablePortSharing

Boolean if the socket has port sharing enabled (readonly)

Terminator

Terminator value used for string data (currently not used)


3.15 USBTMC

3.15.1 @octave_usbtmc/fclose

Function File: res = fclose (obj)

Closes USBTMC connection obj

Inputs

obj is a usbtmc object.

3.15.2 @octave_usbtmc/fopen

Function File: res = fopen (obj) (dummy)

Opens USBTMC connection obj This currently is a dummy function to improve compatibility to MATLAB

3.15.3 @octave_usbtmc/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from usbtmc instrument

Inputs

obj is a usbtmc object.
size Number of values to read. (Default: 100).
precision precision of data.

Outputs

data The read data.
count values read.
errmsg read operation error message.

3.15.4 @octave_usbtmc/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to an usbtmc instrument

Inputs

obj is a usbtmc object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.15.5 usbtmc

Loadable Function: usbtmc = usbtmc (path)

Open usbtmc interface.

Inputs

path - the interface path of type String. If omitted defaults to ’/dev/usbtmc0’.

Outputs

The usbtmc() shall return instance of octave_usbtmc class as the result usbtmc.

3.15.6 usbtmc_close

Loadable Function: usbtmc_close (usbtmc)

Close the interface and release a file descriptor.

Inputs

usbtmc - instance of octave_usbtmc class.

Outputs

None

3.15.7 usbtmc_read

Loadable Function: [data, count] = usbtmc_read (usbtmc, n)

Read from usbtmc slave device.

Inputs

usbtmc - instance of octave_usbtmc class.
n - number of bytes to attempt to read of type Integer.

Outputs

count - the number of bytes successfully read as an Integer.
data - the read bytes as a uint8 array.

3.15.8 usbtmc_write

Loadable Function: n = usbtmc_write (usbtmc, data)

Write data to a usbtmc slave device.

Inputs

usbtmc - instance of octave_usbtmc class.
data - data, of type uint8, to be written to the slave device.

Outputs

Upon successful completion, usbtmc_write() shall return the number of bytes written as the result n.


3.16 VXI11

3.16.1 @octave_vxi11/fclose

Function File: res = fclose (obj)

Closes VXI11 connection obj

3.16.2 @octave_vxi11/fopen

Function File: res = fopen (obj) (dummy)

Opens VXI11 connection obj This currently is a dummy function to improve compatibility to MATLAB

3.16.3 @octave_vxi11/fread

Function File: data = fread (obj)
Function File: data = fread (obj, size)
Function File: data = fread (obj, size, precision)
Function File: [data,count] = fread (obj, ...)
Function File: [data,count,errmsg] = fread (obj, ...)

Reads data from vxi11 instrument

Inputs

obj is a vxi11 object.
size Number of values to read. (Default: 100).
precision precision of data.

Outputs

data The read data.
count values read.
errmsg read operation error message.

3.16.4 @octave_vxi11/fwrite

Function File: numbytes = fwrite (obj, data)
Function File: numbytes = fwrite (obj, data, precision)

Writes data to vxi11 instrument

Inputs

obj is a vxi11 object.
data data to write.
precision precision of data.

Outputs

returns number of bytes written.

3.16.5 vxi11

Loadable Function: vxi11 = vxi11 (ip,instr)

Open vxi11 interface.

ip - the ip address of type String. If omitted defaults to ’127.0.0.1’. instr - the instrument name of type String. If omitted defaults to ’inst0’.

The vxi11() shall return instance of octave_vxi11 class as the result vxi11.

3.16.6 vxi11_close

Loadable Function: vxi11_close (vxi11)

Close the interface and release a file descriptor.

vxi11 - instance of octave_vxi11 class.

3.16.7 vxi11_read

Loadable Function: [data, count] = vxi11_read (vxi11, n)

Read from vxi11 slave device.

vxi11 - instance of octave_vxi11 class.
n - number of bytes to attempt to read of type Integer.

The vxi11_read() shall return number of bytes successfully read in count as Integer and the bytes themselves in data as uint8 array.

3.16.8 vxi11_write

Loadable Function: n = vxi11_write (vxi11, data)

Write data to a vxi11 slave device.

vxi11 - instance of octave_vxi11 class.
data - data to be written to the slave device. Can be either of String or uint8 type.

Upon successful completion, vxi11_write() shall return the number of bytes written as the result n.


Appendix A GNU General Public License

Version 3, 29 June 2007
Copyright © 2007 Free Software Foundation, Inc. http://fsf.org/
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.

Preamble

The GNU General Public License is a free, copyleft license for software and other kinds of works.

The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program—to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.

When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.

To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.

For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.

Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it.

For the developers’ and authors’ protection, the GPL clearly explains that there is no warranty for this free software. For both users’ and authors’ sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.

Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users’ freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users.

Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.

The precise terms and conditions for copying, distribution and modification follow.

TERMS AND CONDITIONS

  1. Definitions.

    “This License” refers to version 3 of the GNU General Public License.

    “Copyright” also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.

    “The Program” refers to any copyrightable work licensed under this License. Each licensee is addressed as “you”. “Licensees” and “recipients” may be individuals or organizations.

    To “modify” a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a “modified version” of the earlier work or a work “based on” the earlier work.

    A “covered work” means either the unmodified Program or a work based on the Program.

    To “propagate” a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.

    To “convey” a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.

    An interactive user interface displays “Appropriate Legal Notices” to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion.

  2. Source Code.

    The “source code” for a work means the preferred form of the work for making modifications to it. “Object code” means any non-source form of a work.

    A “Standard Interface” means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.

    The “System Libraries” of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A “Major Component”, in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.

    The “Corresponding Source” for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work’s System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work.

    The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.

    The Corresponding Source for a work in source code form is that same work.

  3. Basic Permissions.

    All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.

    You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you.

    Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary.

  4. Protecting Users’ Legal Rights From Anti-Circumvention Law.

    No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.

    When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work’s users, your or third parties’ legal rights to forbid circumvention of technological measures.

  5. Conveying Verbatim Copies.

    You may convey verbatim copies of the Program’s source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.

    You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.

  6. Conveying Modified Source Versions.

    You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:

    1. The work must carry prominent notices stating that you modified it, and giving a relevant date.
    2. The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”.
    3. You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
    4. If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.

    A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation’s users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.

  7. Conveying Non-Source Forms.

    You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:

    1. Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
    2. Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge.
    3. Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.
    4. Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements.
    5. Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.

    A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work.

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    The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.

    Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying.

  8. Additional Terms.

    “Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.

    When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.

    Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:

    1. Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
    2. Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
    3. Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or
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    6. Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.

    All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.

    If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.

    Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.

  9. Termination.

    You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).

    However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.

    Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.

    Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.

  10. Acceptance Not Required for Having Copies.

    You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.

  11. Automatic Licensing of Downstream Recipients.

    Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.

    An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party’s predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.

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  12. Patents.

    A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor’s “contributor version”.

    A contributor’s “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, “control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.

    Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor’s essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.

    In the following three paragraphs, a “patent license” is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To “grant” such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.

    If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient’s use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.

    If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.

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    Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.

  13. No Surrender of Others’ Freedom.

    If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.

  14. Use with the GNU Affero General Public License.

    Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.

  15. Revised Versions of this License.

    The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.

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  16. Disclaimer of Warranty.

    THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

  17. Limitation of Liability.

    IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

  18. Interpretation of Sections 15 and 16.

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END OF TERMS AND CONDITIONS

How to Apply These Terms to Your New Programs

If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.

To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.

one line to give the program's name and a brief idea of what it does.  
Copyright (C) year name of author
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program.  If not, see http://www.gnu.org/licenses/.

Also add information on how to contact you by electronic and paper mail.

If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:

program Copyright (C) year name of author 
This program comes with ABSOLUTELY NO WARRANTY; for details type ‘show w’.
This is free software, and you are welcome to redistribute it
under certain conditions; type ‘show c’ for details.

The hypothetical commands ‘show w’ and ‘show c’ should show the appropriate parts of the General Public License. Of course, your program’s commands might be different; for a GUI interface, you would use an “about box”.

You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see http://www.gnu.org/licenses/.

The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read http://www.gnu.org/philosophy/why-not-lgpl.html.


Index

Jump to:   B   C   F   G   I   L   M   O   P   R   S   T   U   V   W  
Index EntrySection

B
Basic Usage OverviewBasic Usage Overview

C
clrdeviceGPIB
Common FunctionsCommon Functions
configureMulticastUDP Port
configureTerminatorSerial Port
configureTerminatorTCP Client
configureTerminatorTCP Server
configureTerminatorUDP Port
copyrightCopying

F
fcloseGPIB
fcloseI2C
fcloseParallel
fcloseSerial (Deprecated)
fcloseSPI
fcloseTCP (Deprecated)
fcloseUDP (Deprecated)
fcloseUSBTMC
fcloseVXI11
flushSerial Port
flushTCP (Deprecated)
flushTCP Client
flushTCP Server
flushUDP (Deprecated)
flushUDP Port
flushinputCommon Functions
flushinputSerial (Deprecated)
flushinputTCP (Deprecated)
flushinputUDP (Deprecated)
flushoutputCommon Functions
flushoutputSerial (Deprecated)
flushoutputTCP (Deprecated)
flushoutputUDP (Deprecated)
fopenGPIB
fopenI2C
fopenParallel
fopenSerial (Deprecated)
fopenSPI
fopenTCP (Deprecated)
fopenUDP (Deprecated)
fopenUSBTMC
fopenVXI11
fprintfGPIB
fprintfSerial (Deprecated)
fprintfSerial Port
fprintfTCP (Deprecated)
fprintfUDP (Deprecated)
fprintfUDP Port
freadGPIB
freadI2C
freadParallel
freadSerial (Deprecated)
freadSerial Port
freadSPI
freadTCP (Deprecated)
freadUDP (Deprecated)
freadUDP Port
freadUSBTMC
freadVXI11
fscanfGPIB
Function ReferenceFunction Reference
fwriteGPIB
fwriteI2C
fwriteParallel
fwriteSerial (Deprecated)
fwriteSerial Port
fwriteSPI
fwriteTCP (Deprecated)
fwriteUDP (Deprecated)
fwriteUDP Port
fwriteUSBTMC
fwriteVXI11

G
GeneralGeneral
getI2C
getModbus
getSerial (Deprecated)
getSerial Port
getSPI
getTCP (Deprecated)
getTCP Client
getTCP Server
getUDP (Deprecated)
getUDP Port
getpinstatusSerial Port
GPIBGPIB
gpibGPIB
gpib_closeGPIB
gpib_readGPIB
gpib_timeoutGPIB
gpib_writeGPIB

I
I2CI2C
i2cI2C
i2c_addrI2C
i2c_closeI2C
i2c_readI2C
i2c_writeI2C
Installing and loadingInstalling and loading
instrhelpGeneral
instrhwinfoGeneral

L
LoadingInstalling and loading

M
maskWriteModbus
ModbusModbus
modbusModbus

O
Off-line installInstalling and loading
Online installInstalling and loading

P
ParallelParallel
parallelParallel
pp_closeParallel
pp_ctrlParallel
pp_dataParallel
pp_datadirParallel
pp_statParallel

R
readModbus
readSerial Port
readSPI
readTCP (Deprecated)
readTCP Client
readTCP Server
readUDP (Deprecated)
readUDP Port
readbinblockCommon Functions
readlineCommon Functions
RequirementsInstalling and loading
resolvehostGeneral

S
serialSerial (Deprecated)
Serial (Deprecated)Serial (Deprecated)
Serial PortSerial Port
serialbreakSerial (Deprecated)
serialbreakSerial Port
seriallistSerial (Deprecated)
serialportSerial Port
serialportlistSerial Port
setI2C
setModbus
setSerial (Deprecated)
setSerial Port
setSPI
setTCP (Deprecated)
setTCP Client
setTCP Server
setUDP (Deprecated)
setUDP Port
setDTRSerial Port
setRTSSerial Port
SPISPI
spiSPI
spi_closeSPI
spi_readSPI
spi_writeSPI
spi_writeAndReadSPI
spollGPIB
srl_baudrateSerial (Deprecated)
srl_bytesizeSerial (Deprecated)
srl_closeSerial (Deprecated)
srl_flushSerial (Deprecated)
srl_paritySerial (Deprecated)
srl_readSerial (Deprecated)
srl_stopbitsSerial (Deprecated)
srl_timeoutSerial (Deprecated)
srl_writeSerial (Deprecated)

T
tcpTCP (Deprecated)
TCP (Deprecated)TCP (Deprecated)
TCP ClientTCP Client
TCP ServerTCP Server
tcp_closeTCP (Deprecated)
tcp_readTCP (Deprecated)
tcp_timeoutTCP (Deprecated)
tcp_writeTCP (Deprecated)
tcpclientTCP Client
tcpipTCP (Deprecated)
tcpserverTCP Server
triggerGPIB

U
udpUDP (Deprecated)
UDP (Deprecated)UDP (Deprecated)
UDP PortUDP Port
udp_closeUDP (Deprecated)
udp_demoUDP (Deprecated)
udp_readUDP (Deprecated)
udp_timeoutUDP (Deprecated)
udp_writeUDP (Deprecated)
udpportUDP Port
USBTMCUSBTMC
usbtmcUSBTMC
usbtmc_closeUSBTMC
usbtmc_readUSBTMC
usbtmc_writeUSBTMC

V
VXI11VXI11
vxi11VXI11
vxi11_closeVXI11
vxi11_readVXI11
vxi11_writeVXI11

W
warrantyCopying
Windows installInstalling and loading
writeModbus
writeSerial Port
writeSPI
writeTCP (Deprecated)
writeTCP Client
writeTCP Server
writeUDP (Deprecated)
writeUDP Port
writeAndReadSPI
writebinblockCommon Functions
writelineCommon Functions
writelineUDP Port
writereadCommon Functions
writeReadModbus