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LibrePilot/flight/PiOS/STM32F4xx/pios_led.c
2012-01-25 22:50:19 -06:00

129 lines
2.9 KiB
C

/**
******************************************************************************
* @addtogroup PIOS PIOS Core hardware abstraction layer
* @{
* @addtogroup PIOS_LED LED Functions
* @brief STM32 Hardware LED handling code
* @{
*
* @file pios_led.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
* @brief LED functions, init, toggle, on & off.
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Project Includes */
#include "pios.h"
#if defined(PIOS_INCLUDE_LED)
#include <pios_led_priv.h>
const static struct pios_led_cfg * led_cfg;
/**
* Initialises all the LED's
*/
int32_t PIOS_LED_Init(const struct pios_led_cfg * cfg)
{
PIOS_Assert(cfg);
/* Store away the config in a global used by API functions */
led_cfg = cfg;
for (uint8_t i = 0; i < cfg->num_leds; i++) {
const struct pios_led * led = &(cfg->leds[i]);
if (led->remap) {
GPIO_PinAFConfig(led->pin.gpio, led->pin.init.GPIO_Pin, led->remap);
}
GPIO_Init(led->pin.gpio, &led->pin.init);
PIOS_LED_Off(i);
}
return 0;
}
/**
* Turn on LED
* \param[in] LED LED id
*/
void PIOS_LED_On(uint32_t led_id)
{
PIOS_Assert(led_cfg);
if (led_id >= led_cfg->num_leds) {
/* LED index out of range */
return;
}
const struct pios_led * led = &(led_cfg->leds[led_id]);
GPIO_ResetBits(led->pin.gpio, led->pin.init.GPIO_Pin);
}
/**
* Turn off LED
* \param[in] LED LED id
*/
void PIOS_LED_Off(uint32_t led_id)
{
PIOS_Assert(led_cfg);
if (led_id >= led_cfg->num_leds) {
/* LED index out of range */
return;
}
const struct pios_led * led = &(led_cfg->leds[led_id]);
GPIO_SetBits(led->pin.gpio, led->pin.init.GPIO_Pin);
}
/**
* Toggle LED on/off
* \param[in] LED LED id
*/
void PIOS_LED_Toggle(uint32_t led_id)
{
PIOS_Assert(led_cfg);
if (led_id >= led_cfg->num_leds) {
/* LED index out of range */
return;
}
const struct pios_led * led = &(led_cfg->leds[led_id]);
if (GPIO_ReadOutputDataBit(led->pin.gpio, led->pin.init.GPIO_Pin) == Bit_SET) {
PIOS_LED_On(led_id);
} else {
PIOS_LED_Off(led_id);
}
}
#endif
/**
* @}
* @}
*/