STM8S105K4T6------Serial port sending and receiving

The last article talked about how to light up the boardLED,这次来讲,stm8s105k4t6的串口发送数据

不会点亮LEDlights can be seen—>stm8点亮LED

Serial port sending part

步骤： 在点亮LEDAdd a light to the baseuart.c和uart.h文件 See my picture below for the code,I explain the code later

记得要#include“uart.h”Header file and initialization serial port configuration function

main.c就几行代码,Just copy me ,下面放uart.c和uart.h的代码

Here is the initialization of the serial port pins

UART.C代码

#include "usart.h"

void Usart2_Config(void)
{
    
	 //Send and receive sockets are initialized
	GPIO_Init(GPIOD, GPIO_PIN_6, GPIO_MODE_IN_PU_NO_IT);
	GPIO_Init(GPIOD, GPIO_PIN_5, GPIO_MODE_OUT_PP_HIGH_FAST);
	
	CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART2, ENABLE);

	UART2_Init((uint32_t)115200, UART2_WORDLENGTH_8D, UART2_STOPBITS_1,UART2_PARITY_NO,UART2_SYNCMODE_CLOCK_DISABLE, UART2_MODE_TXRX_ENABLE);

	UART2_ITConfig(UART2_IT_RXNE_OR, ENABLE);//开启接收中断
	UART2_Cmd(ENABLE);                           
}

void Usart2_SendByte(u8 Byte)
{
    


	UART2_SendData8(Byte);

	while((UART2->SR & 0x80) == 0x00)
	{
    

	}
}

void Usart2_SendHalfWord(uint16_t ch)
{
    
	uint8_t temp_h, temp_l;
	
	/* 取出高八位 */
	temp_h = (ch&0XFF00)>>8;
	/* 取出低八位 */
	temp_l = ch&0XFF;
	
	/* 发送高八位 */
	Usart2_SendByte(temp_h);		/* 发送低八位 */
	Usart2_SendByte(temp_l);	
}

void Usart2_SendByteArr(u8* Buff, u16 Size)
{
    
	while(Size--)
	{
    
		Usart2_SendByte(*Buff++);
	}
}

void Usart2_SendHalfWordArr(u16* Buff, u16 Size)
{
    
	while(Size--)
	{
    
		Usart2_SendHalfWord(*Buff++);
	}
}

void Usart2_SendString(char *str)
{
    
	unsigned int k=0;

	Delay_us(100);
  do 
  {
    
    Usart2_SendByte(*(str + k));
    k++;
  }while(*(str + k)!='\0');
	Delay_us(100);
}

这几个函数,It is to encapsulate the sent bytes,数组,字符串的函数,这样封装后,The code can directly call the function to realize the sending function

UART.H代码

#ifndef __USART_H
#define __USART_H

#include "stm8s_conf.h"
#define UART2_FRAME_LENGHT 30
//Interrupt buffer serial port data length

extern u8 Uart2_Buff[UART2_FRAME_LENGHT], Uart2_RecNum;

void Usart2_Config(void);
void Usart2_SendHalfWord(uint16_t ch);
void Usart2_SendByte(u8 Byte);
void Usart2_SendByteArr(u8* Buff, u16 Size);
void Usart2_SendHalfWordArr(u16* Buff, u16 Size);
void Usart2_SendString(char *str);
#endif

Finally, the serial port can send data,I have this because of the poor contact of the Dupont wire, Only when there is signal interference

串口接收部分

Because the function to be implemented here is：What is received by the serial port,We will send something out
只需要在main.cIt is enough to add the code to turn on the total interrupt

This is done in the interrupt code

This will make hair1,LED亮,否则灭

经过测试,都是没问题的,You should also try it now