基于51单片机的无线遥控器制作

#include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit key1 = P1^0; sbit key2 = P1^1; sbit key3 = P1^2; sbit key4 = P1^3; sbit key5 = P1^4; sbit key6 = P1^5; sbit key7 = P1^6; sbit key8 = P1^7; void delay(uint z) { uint x,y; for(x = z; x > 0; x--) for(y = 114; y > 0 ; y--); } void UART_init() { TMOD = 0x20; TH1 = 0xfd; TL1 = 0xfd; TR1 = 1; SM0 = 0; SM1 = 1; REN = 1; EA = 1; ES = 1; } void main() { UART_init(); while(1) { if(!key1||!key2||!key3||!key4||!key5||!key6||!key7||!key8) TI = 1; } } void UART() interrupt 4 { char key; if(TI) { TI = 0; if(!key1)SBUF = '1'; if(!key2)SBUF = '2'; if(!key3)SBUF = '3'; if(!key4)SBUF = '4'; if(!key5)SBUF = '5'; if(!key6)SBUF = '6'; if(!key7)SBUF = '7'; if(!key8)SBUF = '8'; delay(10); } if(RI) { RI=0; key=SBUF; if(key=='1') key1=0; else key1=1; } }