upm/src/led/led.c
Jon Trulson e7c80217c2 C examples: move mraa_init() calls out of C examples and into C drivers.
Signed-off-by: Jon Trulson <jtrulson@ics.com>
2016-09-28 17:34:42 -06:00

71 lines
2.3 KiB
C

/*
* Author: Brendan Le Foll <brendan.le.foll@intel.com>
* Contributions: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
* Contributions: Sarah Knepper <sarah.knepper@intel.com>
* Abhishek Malik <abhishek.malik@intel.com>
* Copyright (c) 2016 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "led.h"
#include "upm_types.h"
led_context led_init(uint8_t pin){
// make sure MRAA is initialized
int mraa_rv;
if ((mraa_rv = mraa_init()) != MRAA_SUCCESS)
{
printf("%s: mraa_init() failed (%d).\n", __FUNCTION__, mraa_rv);
return NULL;
}
led_context dev =
(led_context)malloc(sizeof(struct _led_context));
if (!dev)
return NULL;
dev->led_pin = pin;
dev->gpio = mraa_gpio_init(dev->led_pin);
if (mraa_gpio_dir(dev->gpio, MRAA_GPIO_OUT) != MRAA_SUCCESS)
return NULL;
return dev;
}
void led_close(led_context dev){
free(dev);
}
upm_result_t led_on(led_context dev){
if (mraa_gpio_write(dev->gpio, 1) != MRAA_SUCCESS)
return UPM_ERROR_OPERATION_FAILED;
return UPM_SUCCESS;
}
upm_result_t led_off(led_context dev){
if (mraa_gpio_write(dev->gpio, 0) != MRAA_SUCCESS)
return UPM_ERROR_OPERATION_FAILED;
return UPM_SUCCESS;
}