/****************************************************************************
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* Copyright: (C)2014 Î人ÁèÔÆǶÈëʽʵÑéÊÒ www.emblinux.com
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* Author: GuoWenxue<guowenxue@gmail.com> QQ: 281143292
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* Description: ·Ü¶·STM32v5¿ª·¢°å°´¼ü²Ù×÷º¯Êý,°´KEY1ÔòLED1ÁÁ,°´KEY2ÔòLED2ÁÁ,°´KEY3ÔòLED3ÁÁ
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*
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* KEY1-PC5 KEY2-PC2 KEY3-PC3
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* LED1-PB5 LED2-PD6 LED3-PD3
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*
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* ChangeLog:
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* °æ±¾ºÅ ÈÕÆÚ ×÷Õß ËµÃ÷
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* V1.0.0 2014.08.25 GuoWenxue ·¢²¼¸Ã°æ±¾
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****************************************************************************/
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#include "stm32f10x.h"
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#include "stm32f10x_exti.h"
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#include "stm32f10x_rcc.h"
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#include "misc.h"
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#include "stm32v5_led.h"
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#include "stm32v5_key.h"
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#define DEFINE_PIN_EXTI(group, pin, IRQn, SubPriority) \
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void init_P##group##pin##_as_EXTI(void) \
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{ \
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GPIO_InitTypeDef GPIO_InitStructure; \
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EXTI_InitTypeDef EXTI_InitStructure; \
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NVIC_InitTypeDef NVIC_InitStructure; \
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\
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO##group|RCC_APB2Periph_AFIO, ENABLE); \
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\
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_##pin; \
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; \
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; \
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GPIO_Init(GPIO##group, &GPIO_InitStructure); \
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\
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GPIO_EXTILineConfig(GPIO_PortSourceGPIO##group, GPIO_PinSource##pin); \
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EXTI_InitStructure.EXTI_Line = EXTI_Line##pin; \
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; \
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; \
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EXTI_InitStructure.EXTI_LineCmd = ENABLE; \
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EXTI_Init(&EXTI_InitStructure); \
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\
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); \
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NVIC_InitStructure.NVIC_IRQChannel = IRQn; \
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; \
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; \
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; \
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NVIC_Init(&NVIC_InitStructure); \
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}
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/* Key1(PC5) configured as EXTI5, SubPriority as 1 */
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DEFINE_PIN_EXTI(C, 5, EXTI9_5_IRQn, 1)
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/* Key2(PC2) configured as EXTI2, SubPriority as 2 */
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DEFINE_PIN_EXTI(C, 2, EXTI2_IRQn, 2)
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/* Key3(PC3) configured as EXTI3, SubPriority as 3 */
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DEFINE_PIN_EXTI(C, 3, EXTI3_IRQn, 3)
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/* PC5 Key1 interrupt handler */
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void EXTI9_5_IRQHandler(void)
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{
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static uint8_t led1_status = OFF;
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if(EXTI_GetITStatus(EXTI_Line5) != RESET)
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{
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led1_status ^= 1;
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turn_led(LED1, led1_status);
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// EXTI_ClearITPendingBit(EXTI_Line5);
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}
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}
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/* PC2 Key2 interrupt handler */
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void EXTI2_IRQHandler(void)
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{
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static uint8_t led2_status = OFF;
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if(EXTI_GetITStatus(EXTI_Line2) != RESET)
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{
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led2_status ^= 1;
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turn_led(LED2, led2_status);
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EXTI_ClearITPendingBit(EXTI_Line2);
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}
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}
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/* PC3 Key3 interrupt handler */
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void EXTI3_IRQHandler(void)
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{
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static uint8_t led3_status = OFF;
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if(EXTI_GetITStatus(EXTI_Line3) != RESET)
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{
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led3_status ^= 1;
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turn_led(LED3, led3_status);
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EXTI_ClearITPendingBit(EXTI_Line3);
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}
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}
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void init_keys_interrupt(void)
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{
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init_PC5_as_EXTI();
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init_PC2_as_EXTI();
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init_PC3_as_EXTI();
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}
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