#ifndef __REG51_H__
#define __REG51_H__
sfr P0 = 0x80;
sfr P1 = 0x90;
sfr P2 = 0xA0;
sfr P3 = 0xB0;
sfr PSW = 0xD0;
sfr ACC = 0xE0;
sfr B = 0xF0;
sfr SP = 0x81;
sfr DPL = 0x82;
sfr DPH = 0x83;
sfr PCON = 0x87;
sfr TCON = 0x88;
sfr TMOD = 0x89;
sfr TL0 = 0x8A;
sfr TL1 = 0x8B;
sfr TH0 = 0x8C;
sfr TH1 = 0x8D;
sfr IE = 0xA8;
sfr IP = 0xB8;
sfr SCON = 0x98;
sfr SBUF = 0x99;
sbit CY = 0xD7;
sbit AC = 0xD6;
sbit F0 = 0xD5;
sbit RS1 = 0xD4;
sbit RS0 = 0xD3;
sbit OV = 0xD2;
sbit P = 0xD0;
sbit TF1 = 0x8F;
sbit TR1 = 0x8E;
sbit TF0 = 0x8D;
sbit TR0 = 0x8C;
sbit IE1 = 0x8B;
sbit IT1 = 0x8A;
sbit IE0 = 0x89;
sbit IT0 = 0x88;
sbit EA = 0xAF;
sbit ES = 0xAC;
sbit ET1 = 0xAB;
sbit EX1 = 0xAA;
sbit ET0 = 0xA9;
sbit EX0 = 0xA8;
sbit PS = 0xBC;
sbit PT1 = 0xBB;
sbit PX1 = 0xBA;
sbit PT0 = 0xB9;
sbit PX0 = 0xB8;
sbit RD = 0xB7;
sbit WR = 0xB6;
sbit T1 = 0xB5;
sbit T0 = 0xB4;
sbit INT1 = 0xB3;
sbit INT0 = 0xB2;
sbit TXD = 0xB1;
sbit RXD = 0xB0;
sbit SM0 = 0x9F;
sbit SM1 = 0x9E;
sbit SM2 = 0x9D;
sbit REN = 0x9C;
sbit TB8 = 0x9B;
sbit RB8 = 0x9A;
sbit TI = 0x99;
sbit RI = 0x98;
#endif
/*********************************************************************************
* 【編寫時間】: 2014年3月5日
* 【作 者】: 清翔電子:03
* 【版 本】: 1.0
* 【網 站】: http://www.qxmcu.com/
* 【淘寶店鋪】: http://qxmcu.taobao.com/
* 【實驗平臺】: QX-MCS51 單片機開發板
* 【外部晶振】: 11.0592mhz
* 【主控芯片】: STC89C52
* 【編譯環境】: Keil μVisio3
* 【程序功能】: 點亮一個發光二極管
* 【使用說明】:
* 說明:免費開源,不提供源代碼分析.
**********************************************************************************/
//當然也可以改成 reg52.h STC.H 功能一樣的,只是定義的IO口有一點區別,51單片機可以通用。
sbit led=P1^0; //定義一個LED 爲P1.0 IO口
void main() //C語言主函數
{
led=0; //單片機IO P1.0腳輸出一個低電平,點亮發光管。 高電平爲5V 低電平爲0。
while(1);
}