serial.c

单片机uart通信程序

#include <serial.h>
void main()
{
	Init();
	while(1)
	{
	}
}
void Init()
{
	TestType = 0;
	Channel = 0;
	TemData = 0;
	P1 = 0;
	P1 = 0x40;	//检测是否进入中断
	TMOD = 0x20;			
	TL1 = 0xE5;//0xF2;				
	TH1 = 0xE5;//0xF2;
	PCON = 0x00;
	SCON = 0x50;
	REN = 1;			
	TR1 = 1;				
	EA = 1;					
	ES = 1;
	RI = 0;					
	TI = 0;
}
void DataDispose()
{
	TestType = 0;
	Channel = 0;
	TemData &= 0x1F;
	TestType = TemData & 0x03;	//得到测试类型
	//if(TestType != 0x02)
	//	TestType += 1;
	//else
	//	TestType = 0x00;
	if(TestType == 0x00)
		TestType = 0x01;
	else if(TestType == 0x01)
		TestType = 0x03;
		 else if(TestType == 0x02 || TestType == 0x03)
		 	TestType = 0x02;
	Test = (TestType << 4)&0x30;
	Channel = (TemData >> 2)&0x07;
	if(Channel >= 4)
	{
		ENH = 1;
		ENL = 0;
		Channel -= 4;
	}
	else
	{
		ENH = 0;
		ENL = 1;
	}
	if(Channel == 1 || Channel == 2)
		Channel = 3 - Channel;
	Channel &= 0x03; 
	Test = Test | Channel;	
	P1 = P1 | Test; //|0x80;
}
void ReceiveData() interrupt 4 
{
	ES = 0;
	if(_testbit_(RI))
	{
		P1 = 0x80;
		RI = 0;				
		TemData = SBUF;
		SBUF = TemData;
		DataDispose();
		ES = 1;
	}
	if(_testbit_(TI))
	{
		TI = 0;
		ES = 1;
	}	
}