STC15W204S串口通信可切换通信端口

#include
#define S1_S0 0x40
#define S1_S1 0x80
#define FOSC 11059200L
#define BAUD 115200//波特率
unsigned char WORD;

unsigned char busy;
//------------------------

void SendString(unsigned char *s);///发送字符串
void main()
{
/****通信串口切换******/
P_SW1=ACC; //(P3.0/Rxd,P3.1/TxD) /*默认通信串口*/
//-------------------------------------------------
//P_SW1|=S1_S0; //(P3.6/Rxd_2,P3.7/TxD_2)/*通信串口2*/
//-------------------------------------------------
//ACC|=S1_S1; //(P1.6/Rxd_3,P1.7/TxD_3) /*stc15w204s没有这个通信串口*/
//-------------------------------------------------
/********************/
SCON=0x50; //8位可变波特率
T2L=(65536-(FOSC/4/BAUD)); ///设置波特率重装值
T2H=(65536-(FOSC/4/BAUD))>>8;
AUXR=0x14; //T2为1T启动定时器2
AUXR|=0x01;