87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/*
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* Author: Brendan Le Foll <brendan.le.foll@intel.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 <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "mraa/gpio.h"
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int
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main(int argc, char** argv)
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{
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mraa_platform_t platform = mraa_get_platform_type();
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mraa_gpio_context gpio, gpio_in = NULL;
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const char* board_name = mraa_get_platform_name();
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int ledstate = 0;
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switch (platform) {
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case MRAA_INTEL_GALILEO_GEN1:
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gpio = mraa_gpio_init_raw(3);
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break;
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case MRAA_INTEL_MINNOWBOARD_MAX:
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// there is no onboard LED that we can flash on the minnowboard max
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// but on the calamari lure pin 21 is an LED. If you don't have the
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// lure put an LED on pin 21
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gpio = mraa_gpio_init(21);
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break;
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case MRAA_INTEL_JOULE_EXPANSION:
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gpio = mraa_gpio_init(101);
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break;
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default:
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gpio = mraa_gpio_init(13);
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}
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fprintf(stdout, "Welcome to libmraa\n Version: %s\n Running on %s\n", mraa_get_version(), board_name);
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if (gpio == NULL) {
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fprintf(stdout, "Could not initilaize gpio\n");
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return 1;
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}
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// on platforms with physical button use gpio_in
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if (platform == MRAA_INTEL_MINNOWBOARD_MAX) {
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gpio_in = mraa_gpio_init(14);
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if (gpio_in != NULL) {
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mraa_gpio_dir(gpio_in, MRAA_GPIO_IN);
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// S1 on minnowboardmax's calamari lure maps to pin 14, SW1 != S1
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fprintf(stdout, "Press and hold S1 to stop, Press SW1 to shutdown!\n");
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}
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}
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mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
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for (;;) {
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if (gpio_in != NULL && mraa_gpio_read(gpio_in) == 0) {
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return 0;
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}
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ledstate = !ledstate;
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mraa_gpio_write(gpio, !ledstate);
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sleep(1);
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}
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return 0;
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}
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