53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
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/** @file hal/micro/cortexm3/led.c
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* @brief LED manipulation routines; stack and example APIs
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*
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* <!--(C) COPYRIGHT 2010 STMicroelectronics. All rights reserved. -->
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*/
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#include PLATFORM_HEADER
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#include BOARD_HEADER
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#include "hal/micro/led.h"
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#include "hal/micro/micro-common.h"
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#include "hal/micro/cortexm3/micro-common.h"
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#define GPIO_PxCLR_BASE (GPIO_PACLR_ADDR)
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#define GPIO_PxSET_BASE (GPIO_PASET_ADDR)
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#define GPIO_PxOUT_BASE (GPIO_PAOUT_ADDR)
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// Each port is offset from the previous port by the same amount
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#define GPIO_Px_OFFSET (GPIO_PBCFGL_ADDR-GPIO_PACFGL_ADDR)
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void halInitLed(void)
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{
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/* Set GPIO pins for Led D1 and Led D3 */
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halGpioConfig(LED_D1, GPIOCFG_OUT);
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halGpioConfig(LED_D3, GPIOCFG_OUT);
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/* Switch off Led D1,D3 */
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halClearLed(LED_D1);
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halClearLed(LED_D3);
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}
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void halSetLed(HalBoardLed led)
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{
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if(led/8 < 3) {
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*((volatile int32u *)(GPIO_PxCLR_BASE+(GPIO_Px_OFFSET*(led/8)))) = BIT(led&7);
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}
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}
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void halClearLed(HalBoardLed led)
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{
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if(led/8 < 3) {
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*((volatile int32u *)(GPIO_PxSET_BASE+(GPIO_Px_OFFSET*(led/8)))) = BIT(led&7);
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}
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}
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void halToggleLed(HalBoardLed led)
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{
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//to avoid contention with other code using the other pins for other
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//purposes, we disable interrupts since this is a read-modify-write
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ATOMIC(
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if(led/8 < 3) {
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*((volatile int32u *)(GPIO_PxOUT_BASE+(GPIO_Px_OFFSET*(led/8)))) ^= BIT(led&7);
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}
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)
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}
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