进来学习，早就该了解这些，本人很懒
#include#define c(x) (x*110592/120000) sbit Ir_Pin = P3^5; unsigned char Ir_Buf[4]; //用于保存解码结果 // UART初始化 // 波特率：9600 void uart_init(void) { unsigned char u; ET1=0; TMOD = 0x21; // 定时器1工作在方式2（自动重装） SCON = 0x50; // 10位uart TH1 = 0xFD; TL1 = 0xFD; u = SBUF; TR1 = 1; } // 获取低电平时间 unsigned int Ir_Get_Low() { TL0 = 0; TH0 = 0; TR0 = 1; while (!Ir_Pin && (TH0&0x80)==0); TR0 = 0; return (TH0 * 256 + TL0); } // 获取高电平时间 unsigned int Ir_Get_High() { TL0 = 0; TH0 = 0; TR0 = 1; while (Ir_Pin && (TH0&0x80)==0); TR0 = 0; return (TH0 * 256 + TL0); } main() { unsigned int temp; char i,j; uart_init(); while (1) { while (Ir_Pin); temp = Ir_Get_Low(); if (temp < c(8500) || temp > c(9500)) //引导脉冲低电平9000 continue; temp = Ir_Get_High(); if (temp < c(4000) || temp > c(5000)) //引导脉冲高电平4500 continue; for (i=0; i<4; i++) //4个字节 { for (j=0; j<8; j++) //每个字节8位 { temp = Ir_Get_Low(); if(temp < c(200) || temp > c(800)) continue; temp = Ir_Get_High(); if(temp < c(200) || temp > c(2000)) continue; Ir_Buf[i] >>= 1; if(temp > c(1120)) Ir_Buf[i]|=0x80; } } SBUF = Ir_Buf[2]; // 返回键码 while (TI == 0); TI = 0; } }