fpga.c

C8051F020串口与计算机通信的编程

#include"c8051f020.h"
#define uchar unsigned char 
#define uint  unsigned int 


void config()
{	WDTCN=0xDE;
	WDTCN=0xAD;
	XBR0=0x04;		//TX,RX
	XBR1=0x00;
	XBR2=0x40;
	P0MDOUT=0x00;	   //开漏
	P1MDIN=0xFF;
	P1MDOUT=0xFF;
	P2MDOUT=0xFF;
	OSCXCN = 0x00;	
	OSCICN = 0x07;
}
void uart0ini()
{	PCON=0x00;
	SCON0=0x40;			 //8位Uart，可变波特率
}
void bondinit()
{	CKCON=0x20;			 //T2使用系统时钟
	T2CON=0x34;		     //T2溢出做为发送，接收时钟
	RCAP2H=0xFF;
	RCAP2L=0xF7;		 //bond = 4800
}
void delay()
{
	uint i,j;
	for(i=0;i<=300;i++)
	   for(j=0;j<=200;j++)
	   {;;}
}

void main()
{
	uchar i;
	config();
	uart0ini();
	bondinit();
	EA=0;
	TI0=1;
	P1=0xFF;
	P2=0xFF;
	while(1)
	{	for(i=0;i<8;i++)
		{
		while(TI0==0);
		TI0=0;
		SBUF0=P1;
		delay();
		while(TI0==0);
		TI0=0;
		SBUF0=P2&0x0F;
		delay();	  
		}
	}
}