25 lines
632 B
C
25 lines
632 B
C
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#include "uart.h"
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#include <STC15.H>
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void Uart1_Init(void) //115200bps@30.000MHz
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{
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SCON = 0x50; //8位数据,可变波特率
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AUXR |= 0x01; //串口1选择定时器2为波特率发生器
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AUXR |= 0x04; //定时器时钟1T模式
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T2L = 0xBF; //设置定时初始值
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T2H = 0xFF; //设置定时初始值
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AUXR |= 0x10; //定时器2开始计时
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ES = 1; //使能串口1中断
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}
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// 重定向putchar函数
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char putchar(char c) {
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UART_SendByte(c);
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return c;
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}
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void UART_SendByte(unsigned char dat) {
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SBUF = dat;
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while(!TI); // 等待发送完成
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TI = 0; // 清除发送中断标志
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}
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