44bebc4f87
Signed-off-by: Nicola Lunghi <nicola.lunghi@emutex.com> Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/*
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* Author: Nandkishor Sonar
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* Contributors: Alex Tereschenko <alext.mkrs@gmail.com>
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* Copyright (c) 2014 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 "mraa/aio.h"
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int running = 0;
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void
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sig_handler(int signo)
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{
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if (signo == SIGINT) {
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printf("closing down nicely\n");
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running = -1;
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}
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}
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//! [Interesting]
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int
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main()
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{
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mraa_aio_context adc_a0;
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uint16_t adc_value = 0;
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float adc_value_float = 0.0;
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mraa_result_t r = MRAA_SUCCESS;
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adc_a0 = mraa_aio_init(0);
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if (adc_a0 == NULL) {
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return 1;
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}
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signal(SIGINT, sig_handler);
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while (running == 0) {
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adc_value = mraa_aio_read(adc_a0);
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adc_value_float = mraa_aio_read_float(adc_a0);
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fprintf(stdout, "ADC A0 read %X - %d\n", adc_value, adc_value);
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fprintf(stdout, "ADC A0 read float - %.5f (Ctrl+C to exit)\n", adc_value_float);
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sleep(1);
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}
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r = mraa_aio_close(adc_a0);
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if (r != MRAA_SUCCESS) {
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mraa_result_print(r);
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}
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return r;
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}
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//! [Interesting]
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