STM8S USART 串口程序

#include <iostm8s103f3.h> #define uint unsigned int #define uchar unsigned char #define ulong unsigned long uchar data; void Fosc_Init(void) { CLK_CKDIVR_HSIDIV = 0; //1分频 } /************************************************ 函数名称:gpio_init 函数功能:GPIO始化 入口参数:无 出口参数:无 ************************************************/ void gpio_init(void) { PB_DDR = 0X20; PB_CR1 = 0X00; PB_CR2 = 0X00; PB_ODR = 0Xff; } void uart1_init(void) { UART1_CR1=0x00; UART1_CR2=0x00; UART1_CR3=0x00; UART1_BRR2 = 0x03; UART1_BRR1 = 0x68; //9600波特率 UART1_CR2_TEN = 1; //允许发送 UART1_CR2_REN = 1; //允许接收 UART1_CR2_RIEN = 1; //接收中断使能 } void uart1_send(uchar dat) { while((UART1_SR & 0x80)==0x00); UART1_DR = dat; } void main(void) { asm("sim"); //关总中断 gpio_init(); //IO初始化 uart1_init(); //串口初始化 TX(PD5) RX(PD6) Fosc_Init(); //16M asm("rim"); //开总中断 while(1) { asm("nop"); } } #pragma vector = UART1_R_RXNE_vector __interrupt void uart1rxd(void) { UART1_SR_RXNE = 0; data = UART1_DR; if(data==0x01) PB_ODR = 0X00; //LED亮 else PB_ODR = 0Xff; //LED灭 }