Instrument control package: Difference between revisions
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Package for interfacing the outside world of hardware via Serial, i2c or Parallel interfaces. | |||
= Examples = | |||
== Serial == | |||
=== Configuring interface === | |||
You might want to configure interface in a loopback mode for testing. | |||
* If you have a Serial adapter, then simply connect pins 3 (Tx) and 2 (Rx) together (assuming your adapter is [http://en.wikipedia.org/wiki/File:DE9_D-subminiature_RS-232_pinout.png RS-232 DE9], otherwise check before doing anything). One can also insert an LED in series to view the actual bitstream. | |||
* If you do not have a Serial adapter then create a virtual port using: | |||
<pre> | |||
# socat PTY,link=/dev/ttyS15 PTY,link=/dev/ttyS16 | |||
</pre> | |||
which will open two interconnected interfaces, where one (e.g. /dev/ttyS15) can be opened in Octave and second (e.g. /dev/ttyS16) using something like GNU screen: | |||
<pre> | |||
$ screen /dev/ttyS16 <baudrate> | |||
</pre> | |||
do not forget to change interface permissions if you want to use them with Octave/screen without root privileges. | |||
=== Opening and closing the interface === | |||
=== Configuring open interface === | |||
=== srl_read() Timeout === | |||
== Parallel == | |||
parallel | |||
== i2c == | |||
i2c | |||
[[Category:OctaveForge]] | [[Category:OctaveForge]] | ||
[[Category:Packages]] | [[Category:Packages]] | ||
Revision as of 12:26, 28 September 2012
Package for interfacing the outside world of hardware via Serial, i2c or Parallel interfaces.
Examples
Serial
Configuring interface
You might want to configure interface in a loopback mode for testing.
- If you have a Serial adapter, then simply connect pins 3 (Tx) and 2 (Rx) together (assuming your adapter is RS-232 DE9, otherwise check before doing anything). One can also insert an LED in series to view the actual bitstream.
- If you do not have a Serial adapter then create a virtual port using:
# socat PTY,link=/dev/ttyS15 PTY,link=/dev/ttyS16
which will open two interconnected interfaces, where one (e.g. /dev/ttyS15) can be opened in Octave and second (e.g. /dev/ttyS16) using something like GNU screen:
$ screen /dev/ttyS16 <baudrate>
do not forget to change interface permissions if you want to use them with Octave/screen without root privileges.
Opening and closing the interface
Configuring open interface
srl_read() Timeout
Parallel
parallel
i2c
i2c