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https://bitbucket.org/librepilot/librepilot.git
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a2d8544931
to make the flight code compile again. Needs careful review, particularly all the fixes for the signed vs unsigned comparisons. +review OPReview-459
156 lines
3.5 KiB
C
156 lines
3.5 KiB
C
/**
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******************************************************************************
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* @addtogroup PIOS PIOS Core hardware abstraction layer
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* @{
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* @addtogroup PIOS_LED LED Functions
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* @brief STM32 Hardware LED handling code
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* @{
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*
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* @file pios_led.c
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
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* @brief LED functions, init, toggle, on & off.
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* @see The GNU Public License (GPL) Version 3
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*
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*****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "pios.h"
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#ifdef PIOS_INCLUDE_LED
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#include <pios_led_priv.h>
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static const struct pios_led_cfg * led_cfg;
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/**
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* Initialises all the LED's
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*/
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int32_t PIOS_LED_Init(const struct pios_led_cfg * cfg)
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{
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PIOS_Assert(cfg);
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/* Store away the config in a global used by API functions */
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led_cfg = cfg;
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for (uint8_t i = 0; i < cfg->num_leds; i++) {
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const struct pios_led * led = &(cfg->leds[i]);
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/* Enable the peripheral clock for the GPIO */
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switch ((uint32_t)led->pin.gpio) {
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case (uint32_t) GPIOA:
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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break;
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case (uint32_t) GPIOB:
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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break;
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case (uint32_t) GPIOC:
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
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break;
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default:
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PIOS_Assert(0);
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break;
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}
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if (led->remap) {
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GPIO_PinRemapConfig(led->remap, ENABLE);
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}
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GPIO_Init(led->pin.gpio, &led->pin.init);
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PIOS_LED_Off(i);
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}
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return 0;
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}
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/**
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* Turn on LED
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* \param[in] LED LED id
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*/
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void PIOS_LED_On(uint32_t led_id)
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{
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PIOS_Assert(led_cfg);
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if (led_id >= led_cfg->num_leds) {
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/* LED index out of range */
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return;
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}
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const struct pios_led * led = &(led_cfg->leds[led_id]);
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if (led->active_high)
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GPIO_SetBits(led->pin.gpio, led->pin.init.GPIO_Pin);
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else
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GPIO_ResetBits(led->pin.gpio, led->pin.init.GPIO_Pin);
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}
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/**
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* Turn off LED
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* \param[in] LED LED id
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*/
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void PIOS_LED_Off(uint32_t led_id)
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{
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PIOS_Assert(led_cfg);
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if (led_id >= led_cfg->num_leds) {
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/* LED index out of range */
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return;
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}
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const struct pios_led * led = &(led_cfg->leds[led_id]);
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if (led->active_high)
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GPIO_ResetBits(led->pin.gpio, led->pin.init.GPIO_Pin);
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else
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GPIO_SetBits(led->pin.gpio, led->pin.init.GPIO_Pin);
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}
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/**
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* Toggle LED on/off
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* \param[in] LED LED id
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*/
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void PIOS_LED_Toggle(uint32_t led_id)
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{
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PIOS_Assert(led_cfg);
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if (led_id >= led_cfg->num_leds) {
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/* LED index out of range */
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return;
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}
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const struct pios_led * led = &(led_cfg->leds[led_id]);
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if (GPIO_ReadOutputDataBit(led->pin.gpio, led->pin.init.GPIO_Pin) == Bit_SET) {
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if (led->active_high)
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PIOS_LED_Off(led_id);
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else
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PIOS_LED_On(led_id);
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} else {
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if (led->active_high)
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PIOS_LED_On(led_id);
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else
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PIOS_LED_Off(led_id);
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}
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}
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#endif /* PIOS_INCLUDE_LED */
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/**
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* @}
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* @}
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*/
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