STM32红外解码.doc

H文件/红外解码就是得注意消除抖动#ifndef _IR_h_#define _IR_h_#include stm32f10x.hvoid IR_GPIO_Init(void);void IR_EXTI_Init(void);void IR_TIM_Init(void);void IR_Init(void);void EXTI1_IRQHandler(void);#endifC文件#include IR.h#include LED.h#include delay.h#include lcd.hu8 Flag_Data = 0; /移位变量u8 AdressCode1 = 0; /地址码u8 AdressCode2 = 0; /地址反码u8 OrderCode1 = 0; /指令码u8 OrderCode2 = 0; /指令反码u8 RepeatSen = 0; /重发码void IR_GPIO_Init(void)GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);/开启IO 时钟 /* Configure PA.00 pin as input floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;/设置IO模式 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; /必须要上拉 GPIO_Init(GPIOA, &GPIO_InitStructure); /* Enable AFIO clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);/开启AFIO时钟void IR_EXTI_Init(void)EXTI_InitTypeDef EXTI_InitStructure;NVIC_InitTypeDef NVIC_InitStructure;/* Connect EXTI0 Line to PA.00 pin */ GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource1);/设定外设中断线。 /* Configure EXTI0 line */ EXTI_InitStructure.EXTI_Line = EXTI_Line1;/设置中断类型 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; /下降沿触发 EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); /* Enable and set EXTI0 Interrupt to the lowest priority */ NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn; /设置中断优先级 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 10; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure);void IR_TIM_Init(void)TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct; delay_init(72);RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);/开启时钟TIM_TimeBaseInitStruct.TIM_Prescaler = 720-1;/X-1 ，X就是分频。例如 X=720. 72M/720 = 100000.TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;/向上计数模式。TIM_TimeBaseInitStruct.TIM_Period = 60000;/COUNT的值。如果是乡下模式 这是最开始的值。 如果是向上模式， 这是最大值。不能为零 为0定时器不工作TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1 ; /时钟分频因子，这里是对数字滤波器以及TI的分频 选择0。/TIM_TimeBaseInitStruct.TIM_RepetitionCounter这个变量是针对TIM1 TIM8的。TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStruct); TIM_ITConfig (TIM2, TIM_IT_Update, DISABLE);/关闭更新中断 TIM_Cmd(TIM2, ENABLE); /开启外设时钟。 void IR_Init(void) IR_GPIO_Init(); IR_EXTI_Init(); IR_TIM_Init();void EXTI1_IRQHandler(void) u16 TimeVal = 0; delay_nus(20); while(GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_1) = 1); /消除抖动。FUCK! EXTI-EMR &= (u32)(1CNT; if(TimeVal1300 & TimeVal90 & TimeVal150) /接收到0 if(Flag_Data8) AdressCode1 &= (u8)(1 =8) & (Flag_Data16) AdressCode2 &= (u8)(1 = 16) & (Flag_Data24) OrderCode1 &= (u8)(1 = 24) & (Flag_Data32) OrderCode2 &= (u8)(1 180 & TimeVal300) /接收到1 if(Flag_Data8) AdressCode1 |= (u8)(1 =8) & (Flag_Data16) A