STM8L152K4-USART.zip_STM8L152K4T6_stm8_stm8l152K4_truth6dj_wolf4

#include<iostm8l151k4.h> void UART1_Init(unsigned long baudrate) { unsigned int baud; CLK_PCKENR1_bit.PCKEN15 = 1; //使能USART模块时钟 baud = 16000000 / baudrate; //设定串口相应波特率与串口时钟的分频数 //先写BRR2 , 再写BRR1 USART1_BRR2 = ((unsigned char)((baud & 0xf000) >> 8 )) | ((unsigned char)(baud & 0x000f)); USART1_BRR1 = ((unsigned char)((baud & 0x0ff0) >> 4)); USART1_CR1_bit.USARTD = 0; //使能UART0 USART1_CR2_bit.RIEN = 1; //使能中断接收 USART1_CR2_bit.TEN = 1; //使能发送 USART1_CR2_bit.REN = 1; //接收使能 } void Uart_SendData(unsigned char data) { while(!(USART1_SR&0X80)); //判断发送数据寄存器是否为空 USART1_DR = data; //向发送寄存器写入数据 } /* 主函数 */ int main(void) { asm("sim"); //关闭系统总中断 CLK_CKDIVR = 0x00; //系统一开机默认采用内部时钟2M ,通过配置CKM = 0 设置内部时钟 = 16Mhz UART1_Init(9600); //调用串口初始化函数，并设置波特率为9600 bps asm("rim"); //打开系统总中断 while(1) { ; } } /* 串口接收数据中断服务函数 */ #pragma vector = USART_R_RXNE_vector //设置串口接收中断向量号 = USART_R_RXNE_vector __interrupt void UART1_RX_RXNE(void) { unsigned char ch1 = 1; if(USART1_SR_bit.RXNE == 1) // { //ch1 = USART1_DR; //读出串口接收到的数据 清除中断标志 Uart_SendData(ch1); //把接收到的数据再通过串口发送出去 } }