Instrument control package

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Revision as of 08:26, 28 September 2012 by Andrius (talk | contribs) (draft)
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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 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