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85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <unistd.h>
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#include <signal.h>
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#include <upm_utilities.h>
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#include <rpr220.h>
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int shouldRun = true;
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void sig_handler(int signo)
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{
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if (signo == SIGINT)
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shouldRun = false;
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}
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volatile unsigned int counter = 0;
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// Our interrupt handler
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void rpr220_isr(void *arg)
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{
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counter++;
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}
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int main()
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{
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signal(SIGINT, sig_handler);
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//! [Interesting]
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// This example uses an interrupt handler to increment a counter
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// Instantiate an RPR220 digital pin D2
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// This was tested on the Grove IR Reflective Sensor
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rpr220_context sensor = rpr220_init(2);
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if (!sensor)
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{
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printf("rpr220_init() failed\n");
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return 1;
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}
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// Here, we setup our Interupt Service Routine (ISR) to count
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// 'black' pulses detected. We do not pass an argument to the
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// interrupt handler (NULL).
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rpr220_install_isr(sensor, rpr220_isr, NULL);
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while (shouldRun)
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{
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printf("Counter: %d\n", counter);
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upm_delay(1);
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}
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printf("Exiting...\n");
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rpr220_close(sensor);
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//! [Interesting]
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return 0;
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}
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