mirror of https://github.com/joan2937/pigpio
22 lines
961 B
Plaintext
22 lines
961 B
Plaintext
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pigpio provides a pipe interface to many of its functions.<br>
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<br>
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The pipe interface is available whenever pigpio is running, either
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because it has been started as a daemon, or it has been linked in
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to a running user program. The pipe interface can be disabled
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by the program which initialises the library. pigpiod offers
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the -f option to disable the pipe interface. User programs
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should call <a href=
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"http://abyz.me.uk/rpi/pigpio/cif.html#gpioCfgInterfaces">gpioCfgInterfaces</a>
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if they wish to disable the pipe interface.<br>
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<br>
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pigpio listens for commands on pipe /dev/pigpio. The commands
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consist of a command identifier with, depending on the command,
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zero, one, or two parameters. The result, if any, may be read
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from pipe /dev/pigout. If any errors are detected a message
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will be written to pipe /dev/pigerr.<br>
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<br>
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<br>
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The format of the commands is identical to those used by <a href=
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"pigs.html">pigs</a>.
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