/********************************************************************************** * stm32F103VET6 红外驱动【遥控器解码实验程序】 *
* 遥控器 ：42位编码
*
***********************************************************************************/ #include \"stm32f10x.h\" #include \"exti.h\" #include \"beep.h\" #include \"SysTick.h\"
#define LED1_0 GPIOD->BRR = 0x00000100 //LED低电平 #define LED2_0 GPIOD->BRR = 0x00000200 #define LED3_0 GPIOD->BRR = 0x00000400 #define LED4_0 GPIOD->BRR = 0x00000800
#define LED1_1 GPIOD->BSRR = 0x00000100 //LED高电平
#define LED2_1 GPIOD->BSRR = 0x00000200 #define LED3_1 GPIOD->BSRR = 0x00000400 #define LED4_1 GPIOD->BSRR = 0x00000800
#define IR_Hongwai_0 GPIOE->BRR = 0x00000004 //红外数据低电平 #define IR_Hongwai_1 GPIOE->BSRR = 0x00000004 //红外数据高电平
#define IR_Hongwai_x GPIO_ReadInputDataBit(GPIOE, GPIO_Pin_2) //读取红外电平状态
unsigned char TimeByte; unsigned int IR_Tireafg[4];
unsigned int IR_xidwrit[8] = {0, 0, 0, 0, 0, 0 ,0, 0}; /*
* GPIO端口配置子函数
*/
void GPIO_InitStructReadtempCmd(void) {
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2; //配置GPIO管脚
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU; //配置管脚为输入上拉
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; //配置管脚速率50MHZ GPIO_Init(GPIOE, &GPIO_InitStruct); //初始化指定端口
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP; //配置管脚陪推挽式输出 GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11; GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStruct); } /*
* 配置外设时钟子函数
*/
void RCC_APB2PeriphReadtempyCmd(void) {
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //打开GPIOB外设时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE); //打开GPIOE外设时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE); //打开GPIOD外设时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO , ENABLE); //打开AFIO复用功能外设时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 , ENABLE); } /*
* 计算低脉宽持续时间Count1 * 10us */
unsigned int IR_HongwaiRead_LSB_Cmd() {
unsigned int Count1 = 0; //定义时间变量 IR_Hongwai_0; //红外数据低电平 do //进入循环体
{
Count1++; //时间变量加1 Delay_10us(1); //延时10us
} while(IR_Hongwai_x == 0); //判断条件如果读出来的红外数据为高电平跳出循环体
return(Count1); //返回时间变量积数 } /*
* 计算高脉宽持续时间Count2 * 10us */
unsigned int IR_HongwaiRead_MSB_Cmd() {
unsigned int Count2 = 0; //定义时间变量 IR_Hongwai_1; //红外数据高电平 do //进入循环体 {
Count2++; //时间变量加1 Delay_10us(1); //延时10us
} while(IR_Hongwai_x == 1); //判断条件如果读出来的红外数据为低电平跳出循环体 return(Count2); } /*
* 函数主体
*/
int main(void) {
SystemInit(); //初始化系统时钟进入72M主频
SYSTICK_InitStructReadTCmd(); //初始化SysTick配置器寄存器 RCC_APB2PeriphReadtempyCmd(); //初始化外设时钟配置寄存器 GPIO_InitStructReadtempCmd(); //初始化GPIO端口配置寄存器 EXTI_InitStructReadtempCmd(); //初始化EXTI外部线路寄存器 NVIC_InitStructReadtempCmd(); //初始化NVIC中断配置寄存器
while(1) { } } /*
* EXTI外部中断线服务程序
*/
void EXTI2_IRQHandler(void) {
unsigned char i = 0; unsigned char flag = 1; // unsigned char flag1 = 1; unsigned int Countline2 = 0; IR_Hongwai_1;
Countline2 = IR_HongwaiRead_LSB_Cmd(); //低电平引导码 9ms判断
if((Countline2 < 850) || (Countline2 > 950)) //小于8694us 大于9272us 一直循环否则跳出 {
return; }
Countline2 = IR_HongwaiRead_MSB_Cmd(); //高电平引导码 4.5ms判断
if((Countline2 < 400) || (Countline2 > 450)) //小于4195us 大于4712us 一直循环否则跳出 {
return;
}
TimeByte = 0;
for(i = 1; i < 14; i++) {
TimeByte = TimeByte >> 1;
Countline2 = IR_HongwaiRead_LSB_Cmd(); //低电平延时0.56 判断
if((Countline2 < 40) || (Countline2 > 85))//小于425us 大于851us 一直循环否则跳出 {
return; }
Countline2 = IR_HongwaiRead_MSB_Cmd(); //高电平延时0.56判断
if((Countline2 < 40) || (Countline2 > 200))//小于425us 大于1793us 一直循环否则跳出 {
return; }
if( Countline2 > 130) //高电平延时大于1300us写1否则写0 {
TimeByte |= 0x80; //写1
} }
IR_Tireafg[0] = TimeByte; TimeByte = 0;
for(i = 14; i < 27; i++) {
TimeByte = TimeByte >> 1;
Countline2 = IR_HongwaiRead_LSB_Cmd(); if((Countline2 < 40) || (Countline2 > 85)) {
return; }
Countline2 = IR_HongwaiRead_MSB_Cmd(); if((Countline2 < 40) || (Countline2 > 200)) {
return; }
if( Countline2 > 130) {
TimeByte |= 0x80; } }
IR_Tireafg[1] = TimeByte;
TimeByte = 0;
for(i = 27; i < 35; i++) {
TimeByte = TimeByte >> 1;
Countline2 = IR_HongwaiRead_LSB_Cmd(); if((Countline2 < 40) || (Countline2 > 85)) {
return; }
Countline2 = IR_HongwaiRead_MSB_Cmd(); if((Countline2 < 40) && (Countline2 > 200)) {
return; }
if( Countline2 > 130) {
TimeByte |= 0x80; } }
IR_Tireafg[2] = TimeByte; TimeByte = 0;
for(i = 35; i < 43; i++) {
TimeByte = TimeByte >> 1;
Countline2 = IR_HongwaiRead_LSB_Cmd(); while((Countline2 < 40) || (Countline2 > 85)) {
return; }
Countline2 = IR_HongwaiRead_MSB_Cmd(); while((Countline2 < 40) || (Countline2 > 200)) {
return; }
if( Countline2 > 130) {
TimeByte |= 0x80; } }
IR_Tireafg[3] = TimeByte;
//************************判断用户正码和反码***************************************// do {
if(IR_Tireafg[0] == 0x08 & IR_Tireafg[1] == 0xF7 ) {
flag = 0; }
} while(flag == 1);
//************************判断按键正码和反码***************************************// /* do {
if(IR_Tireafg[2] == ~IR_Tireafg[3]) {
flag1 = 0; }
} while(flag1 == 0); */
//************************按下键码对应LED点亮**************************************// switch (IR_Tireafg[2]) {
case 0x00: //按键 0 LED1_1; LED2_0; LED3_0; LED4_0; break;
case 0x01: //按键 1 LED1_0; LED2_1; LED3_0; LED4_0; break;
case 0x02: //按键 2 LED1_0; LED2_0; LED3_1; LED4_0; break;
case 0x03: //按键 3 LED1_0; LED2_0; LED3_0; LED4_1; break;
case 0x04: //按键 4 LED1_0; LED2_0; LED3_1; LED4_0; break;
case 0x05: //按键 5 LED1_0; LED2_1; LED3_0; LED4_0; break;
case 0x06: //按键 6 LED1_1; LED2_0; LED3_0; LED4_0; break;
case 0x07: //按键 7 LED1_1; LED2_0; LED3_1; LED4_0; break;
case 0x08: //按键 8 LED1_0; LED2_0; LED3_0; LED4_0; break;
case 0x09: //按键 9 LED1_0; LED2_1; LED3_0; LED4_1; break;
case 0x15: //静音键 LED1_0; LED2_1; LED3_1; LED4_0; break;
case 0x1C: //开机键 LED1_1; LED2_0; LED3_0; LED4_1; break;
case 0x14: //OSD键 LED1_1; LED2_1; LED3_0; LED4_0; break;
case 0x0E: //RECALL键 LED1_0; LED2_0; LED3_1; LED4_1; break;
case 0x19: //SLEEP键 LED1_1; LED2_1; LED3_1; LED4_0; break;
case 0x0A: //A/C键 LED1_0; LED2_1; LED3_1; LED4_1; break;
case 0x0F: //TV/AV键 LED1_1; LED2_1; LED3_1; LED4_1; break;
case 0x13: //PP键
LED1_1; LED2_0; LED3_1; LED4_0; break;
case 0x0C: //GAME键 LED1_0; LED2_1; LED3_1; LED4_1; break;
case 0x1E: //V-键
LED1_1; LED2_1; LED3_1; LED4_0; break;
case 0x1F: //V+键
LED1_0; LED2_0; LED3_1; LED4_0; break;
case 0x1B: //P+键
LED1_0; LED2_0; LED3_0; LED4_1; break;
case 0x1A: //P-键
LED1_1; LED2_0; LED3_0; LED4_0; break;
case 0x10: //MENU键
LED1_0; LED2_1; LED3_0; LED4_0; break;
default : break;
}
// Beep_lookCmd(); //蜂鸣器按键音
EXTI_ClearITPendingBit(EXTI_Line2); //清除EXTI2外部线路挂起位
}
/*******************************************END****************************************/
