回复：给车载CD加装一款基于stc15w408as的遥控

先在51上验证吧，，，上51单片机最小系统

上网找个红外解码程序，源自博客http://blog.csdn.net/mhjerry/article/details/6600414

借博主一个解码程序
/*------------------------------------------------------------*-
红外收发.C
------------------------------------------------------------
遥控器测试
-*------------------------------------------------------------*/
#include <reg52.h>
// --- 红外接收一体化输出口 ----------------------------------
sbit IR_Out = P3^2;
bit START_Flag = 0;
bit BOOT_REPEATING_CODE_Flag = 0;
unsigned char DATA[4] = {0};
bdata unsigned char TEMP_BIT;
sbit B0 = TEMP_BIT^0;
sbit B1 = TEMP_BIT^1;
sbit B2 = TEMP_BIT^2;
sbit B3 = TEMP_BIT^3;
sbit B4 = TEMP_BIT^4;
sbit B5 = TEMP_BIT^5;
sbit B6 = TEMP_BIT^6;
sbit B7 = TEMP_BIT^7;
// --- 有无遥控信号判断函数 ----------------------------------
bit START_Judge();
// --- 连发码判断函数 ----------------------------------------
bit BOOT_REPEATING_CODE_Judge();
// --- "0"和"1"识别 ------------------------------------------
bit H_L_LEVEL_Judge();
// --- 串口初始化 --------------------------------------------
void UART_Initial();
void DELAY_Us(unsigned int Us)
{
unsigned int x;
for(x = 0; x <= (Us/200-1); x++);
}
void DELAY_Ms(unsigned int Ms)
{
unsigned int x,y;
for(x = 0; x <= (Ms-1); x++)
{
for(y = 0; y <= 120; y++);
}
}
void main()
{
unsigned char i;
UART_Initial();
IR_Out = 1;
while(1)
{
START_Flag = START_Judge();
BOOT_REPEATING_CODE_Flag = BOOT_REPEATING_CODE_Judge();
if ( START_Flag && !BOOT_REPEATING_CODE_Flag )
{
for(i =0;i <4; i++)
{
B0 = H_L_LEVEL_Judge();
B1 = H_L_LEVEL_Judge();
B2 = H_L_LEVEL_Judge();
B3 = H_L_LEVEL_Judge();
B4 = H_L_LEVEL_Judge();
B5 = H_L_LEVEL_Judge();
B6 = H_L_LEVEL_Judge();
B7 = H_L_LEVEL_Judge();
DATA[i] = TEMP_BIT;
}
for(i =0;i <4; i++)
{
SBUF = DATA[i];
while( TI == 0 );
TI = 0;
}
}
}
}
void UART_Initial()
{
SCON = 0x50; // SCON: 模式 1, 8-bit UART, 使能接收
TMOD |= 0x20; // TMOD: timer 1, mode 2, 8-bit reload
TH1 = 0xFD; // TH1: reload value for 9600 baud @
// 11.0592MHz
TR1 = 1; // TR1: timer 1 run
EA = 0; // 关闭总中断
ES = 0; // 关闭串口中断
}
bit START_Judge()
{
bit TEMP_Flag = 1;
unsigned char i = 0;
//在正常无遥控信号时，一体化红外接收头输出是高电平，程序一直在循环。
while ( IR_Out == 1);
//重复10次，目的是检测在6876~8352微秒内如果出现高电平就退出解码程序
for(i =0;i <9; i++)
{
DELAY_Us(800); // 测试实际延时约为764~928us
if ( IR_Out == 1 )
{
TEMP_Flag = 0;
break;
}
}
return TEMP_Flag;
}
bit BOOT_REPEATING_CODE_Judge()
{
bit TEMP_Flag = 1;
while( IR_Out == 0 ) ; // 等待高电平避开9毫秒低电平引导脉冲
DELAY_Ms(1); // 测试实际延时约为1.007ms
DELAY_Ms(1); // 测试实际延时约为1.007ms
DELAY_Us(200); // 0.086ms
DELAY_Us(200); // 0.086ms
DELAY_Us(200); // 0.086ms
// 共计2.272ms
if( IR_Out == 0 )
{
TEMP_Flag = 1; // 是连发码
}
else
{
TEMP_Flag = 0; // 不是连发码，而是引导码
}
return TEMP_Flag;
}
bit H_L_LEVEL_Judge()
{
while( IR_Out == 0 ); // 等待地址码第一位的高电平信号
DELAY_Us(800); // 测试实际延时约为764~928us
if ( IR_Out == 1)
{
DELAY_Ms(1); // 测试实际延时约为1.007ms
return 1;
}
else
{
return 0;
}
}