#include <reg51.h> #include <Intrins.h> #define DATA P0 //1602 驱动端口 sbit RS=P2^0; sbit RW=P2^1; sbit E=P2^2; sbit KA=P2^7; int Pre_KeyNo=16,KeyNo=16; void delayMs( int x); void Keys_Scan(); void Busy() //LED 液晶是否忙碌 { DATA = 0xff; RS = 0; RW = 1; while(DATA & 0x80) { E = 0; E = 1; } E = 0; } //LED 写指令程序 void WriteCommand(unsigned char btCommand) { Busy(); RS = 0; RW = 0; E