#include "reg52.h"
#include "intrins.h"

void Usartinit()
{
    SCON = 0x50;
    TMOD = 0x20;
    TH1 = 0xfd;//晶振11.0592MHz 波特率9600
    TL1 = 0xfd;
    TR1 = 1;
    ES = 1;
    EA = 1;
}
void main()
{
        UsartInit();
        while(1)
        {

        }
}
void Usart() interrupt 4
{
        unsigned char ReceiveData;
        RI=0;
        ReceiveData=SBUF;//保存接收到的數據
        if(ReceiveData == 1)
        {
                ReceiveData = ReceiveData + 1;
        }
        else
        {
                ReceiveData = ReceiveData + 5;
        }
        SBUF=ReceiveData;
        while(!TI); //回傳處理后的數據
        TI=0;
}

void Usart() interrupt 4
{
        unsigned char ReceiveData;
        RI=0;
        ReceiveData=SBUF;//保存接收到的數據
        if(ReceiveData == 1)
        {
                ReceiveData = ReceiveData + 1;
        }
        else
        {
                ReceiveData = ReceiveData + 5;
        }
        SBUF=ReceiveData; //回傳處理后的數據
        while(!TI);
        TI=0;
}