DS1302+串行通信+数码管 STC15W驱动程序

#include "UART1.H" void Init_Uart() { SCON = 0x50; //8位数据,可变波特率 #if URMD == 0 AUXR |= 0x01; //串口1选择定时器2为波特率发生器 AUXR |= 0x04; //定时器2时钟为Fosc,即1T T2L = ((uint)(65536-(float)FOSC/(4*(float)BAUD)))&0x00ff; T2H = (((uint)((65536-(float)FOSC/(4*(float)BAUD))))& 0xff00)>>8; IE2 = IE2 & 0xfb; //禁止定时器2中断 AUXR |= 0x10; //启动定时器2 ES = 0; //禁止串口中断 #elif URMD == 1 AUXR |= 0x40; //定时器1时钟为Fosc,即1T AUXR &= 0xFE; //串口1选择定时器1为波特率发生器 TMOD &= 0x0F; //设定定时器1为16位自动重装方式 TL1 = ((uint)(65536-(float)FOSC/(4*(float)BAUD)))&0x00ff; TH1 = (((uint)((65536-(float)FOSC/(4*(float)BAUD))))& 0xff00)>>8; ET1 = 0; //禁止定时器1中断 TR1 = 1; //启动定时器1 ES = 0; //禁止串口中断 #else PCON &= 0x7F; //波特率不倍速 AUXR |= 0x40; //定时器1时钟为Fosc,即1T AUXR &= 0xFE; //串口1选择定时器1为波特率发生器 TMOD &= 0x0F; //清除定时器1模式位 TMOD |= 0x20; //设定定时器1为8位自动重装方式 ET1 = 0; //禁止定时器1中断 TR1 = 1; //启动定时器1 TL1 = 256-((uchar)((float)FOSC/(32*(float)BAUD))); TH1 = 256-((uchar)((float)FOSC/(32*(float)BAUD))); ET1 = 0; //禁止定时器1中断 ES = 0; //禁止串口中断 #endif } /**/