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Diffstat (limited to 'macros/Hardware/RasberryPi/Interrupt/RPI_waitForInterrupt.sci')
| -rwxr-xr-x | macros/Hardware/RasberryPi/Interrupt/RPI_waitForInterrupt.sci | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/macros/Hardware/RasberryPi/Interrupt/RPI_waitForInterrupt.sci b/macros/Hardware/RasberryPi/Interrupt/RPI_waitForInterrupt.sci new file mode 100755 index 0000000..bb18042 --- /dev/null +++ b/macros/Hardware/RasberryPi/Interrupt/RPI_waitForInterrupt.sci @@ -0,0 +1,45 @@ +// Copyright (C) 2017 - IIT Bombay - FOSSEE +// +// This file must be used under the terms of the CeCILL. +// This source file is licensed as described in the file COPYING, which +// you should have received as part of this distribution. The terms +// are also available at +// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt +// Organization: FOSSEE, IIT Bombay +// Email: toolbox@scilab.in + +function out=RPI_waitForInterrupt(pin,timeOut) +// Function to set a pin to wait for interrupt. +// +// Calling Sequence +// i=RPI_waitForInterrupt(pin,timeOut) +// +// Parameters +// pin : The pin to check for interrupt. Numbering sequence to be followed as initiated using RPI_pinNumbering function. +// timeOut: The time (in milliseconds) for which to wait for interrupt. -1 to wait forever. +// +// Description +// When called, it will wait for an interrupt event to happen on that pin and the program will be stalled. The return value is -1 if an error occurred (and errno will be set appropriately), 0 if it timed out, or 1 on a successful interrupt event. +// +// Before using RPI_waitForInterrupt, first initialise the GPIO pin and at present the only way to do this is to use the gpio program, either in a script, or using the system() call from inside the program. +// Eg: To wait for a falling-edge interrupt on GPIO pin 0, setup the hardware using (before running the program): +// gpio edge 0 falling +// +// Examples +// i=RPI_waitForInterrupt(0,5000) +// See also +// +// +// Authors +// Jorawar Singh +// +// Bibliography +// http://wiringpi.com/reference/ + + commande="Int#2#"+string(pin)+"#"+string(timeOut)+"#"; + if getos()=="Linux" then + out=unix_g("python -c ""import socket;s=socket.socket();s.connect((''"+RPI_piAdress+"'',9077));s.send(''"+commande+"'');print(s.recv(1024));s.close()"""); + elseif getos()=="Windows" then + [out,RPI_winR]=dos("python -c ""import socket;s=socket.socket();s.connect((''"+RPI_piAdress+"'',9077));s.send(''"+commande+"'');print(s.recv(1024));s.close()"""); + end +endfunction |