170bdd104f
Large change that removes the duplicated MIT notice withe a spdx tag Signed-off-by: Thomas Ingleby <thomas.ingleby@intel.com>
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* Author: Brendan Le Foll <brendan.le.foll@intel.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <syslog.h>
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//! [Interesting]
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#include "mraa.h"
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int
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main(int argc, char** argv)
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{
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mraa_result_t ret = MRAA_SUCCESS;
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mraa_platform_t platform_type = mraa_get_platform_type();
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if (platform_type != MRAA_INTEL_EDISON_FAB_C) {
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fprintf(stderr, "Error: This program can only run on an edison\n");
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ret = MRAA_ERROR_INVALID_PLATFORM;
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goto end;
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}
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// MRAA_INTEL_EDISON_GP182 == 0 so this will initialise pin0 on arduino
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// which is hardware gpio 130 and not 182
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mraa_gpio_context gpio182 = mraa_gpio_init(MRAA_INTEL_EDISON_GP182);
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if (gpio182 == NULL) {
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fprintf(stderr, "Error: Failed to open gpio182\n");
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ret = MRAA_ERROR_INVALID_PLATFORM;
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goto end;
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}
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mraa_gpio_dir(gpio182, MRAA_GPIO_OUT);
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// we set the owner to false here, this makes sure that we do not close the
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// gpio from sysfs in mraa_gpio_close meaning it will stay as an output and
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// we will not always transition from 0->1 as gpio182 as output has the
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// default position of '0'. Note that the value could change as a result of
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// a mraa_gpio_dir however meaning we always go from 0->1 or 1->0
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mraa_gpio_owner(gpio182, false);
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int val = mraa_gpio_read(gpio182);
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printf("GPIO%d (mraa pin %d) was: %d, will set to %d\n", 182, mraa_gpio_get_pin(gpio182), val, !val);
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mraa_gpio_write(gpio182, !val);
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mraa_gpio_close(gpio182);
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end:
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mraa_deinit();
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return ret;
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}
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//! [Interesting]
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