stm32 串口发送和接收

串口发送

#include "stm32f10x.h"                  // Device header
#include 
#include 

//初始化串口
void Serial_Init()
{
	//开启时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);

	GPIO_InitTypeDef GPIO_InitStruct;
	GPIO_InitStruct.GPIO_Mode= GPIO_Mode_AF_PP;
	GPIO_InitStruct.GPIO_Pin= GPIO_Pin_9   ;
	GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;

	GPIO_Init(GPIOA,&GPIO_InitStruct);

	USART_InitTypeDef USART_InitStruct;
	USART_InitStruct.USART_BaudRate=9600;//波特率
	USART_InitStruct.USART_HardwareFlowControl=USART_HardwareFlowControl_None;//硬件流控制
	USART_InitStruct.USART_Mode=USART_Mode_Tx;//Tx发送模式 Rx 接受模式
	USART_InitStruct.USART_Parity=USART_Parity_No;//校验位
	USART_InitStruct.USART_StopBits=USART_StopBits_1;//停止位
	USART_InitStruct.USART_WordLength=USART_WordLength_8b;//8位


	USART_Init(USART1,&USART_InitStruct);

	USART_Cmd(USART1,ENABLE);
}
//发送一个字节
void Serial_SendByte(uint8_t Byte){
	USART_SendData(USART1,Byte);
	while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
	
}
//发送一个数组
void Serial_SendArray(uint8_t *Array, uint16_t Length){
	uint16_t i;
	for (i = 0; i < Length; i ++)
	{
		Serial_SendByte(Array[i]);
	}
}


//发送一个字符串
void Serial_SendString(char *String)
{
	uint8_t i;
	for (i = 0; String[i] != '\0'; i ++)
	{
		Serial_SendByte(String[i]);
	}
}
//数字计算
uint32_t Serial_Pow(uint32_t X, uint32_t Y)
{
	uint32_t Result = 1;
	while (Y --)
	{
		Result *= X;
	}
	return Result;
}
//发送数字
void Serial_SendNumber(uint32_t Number, uint8_t Length)
{
	uint8_t i;
	for (i = 0; i < Length; i ++)
	{
		Serial_SendByte(Number / Serial_Pow(10, Length - i - 1) % 10 + '0');
	}
}
//封装printf
int fputc(int ch, FILE *f)
{
	Serial_SendByte(ch);
	return ch;
}
//可变参数
void Serial_Printf(char *format, ...)
{
	char String[100];
	va_list arg;
	va_start(arg, format);
	vsprintf(String, format, arg);
	va_end(arg);
	Serial_SendString(String);
}

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收发

#include "stm32f10x.h"                  // Device header
#include 
#include 

 uint8_t Serial_RxData;
 uint8_t Serial_RxFlag;
//初始化串口
void Serial_Init()
{
	//开启时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);

	GPIO_InitTypeDef GPIO_InitStruct;
	GPIO_InitStruct.GPIO_Mode= GPIO_Mode_AF_PP;
	GPIO_InitStruct.GPIO_Pin= GPIO_Pin_9  ;
	GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;

	GPIO_Init(GPIOA,&GPIO_InitStruct);

	GPIO_InitStruct.GPIO_Mode= GPIO_Mode_IPU;
	GPIO_InitStruct.GPIO_Pin=  GPIO_Pin_10 ;
	GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;

	GPIO_Init(GPIOA,&GPIO_InitStruct);

	USART_InitTypeDef USART_InitStruct;
	USART_InitStruct.USART_BaudRate=9600;//波特率
	USART_InitStruct.USART_HardwareFlowControl=USART_HardwareFlowControl_None;//硬件流控制
	USART_InitStruct.USART_Mode=USART_Mode_Tx | USART_Mode_Rx;//Tx发送模式 Rx 接受模式
	USART_InitStruct.USART_Parity=USART_Parity_No;//校验位
	USART_InitStruct.USART_StopBits=USART_StopBits_1;//停止位
	USART_InitStruct.USART_WordLength=USART_WordLength_8b;//8位


	USART_Init(USART1,&USART_InitStruct);

	USART_ITConfig(USART1,USART_IT_TXE,ENABLE);
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
	NVIC_InitTypeDef NVIC_InitStruct;
	NVIC_InitStruct.NVIC_IRQChannel=USART1_IRQn;
	NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
	NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=1;
	NVIC_InitStruct.NVIC_IRQChannelSubPriority=1;




	NVIC_Init(&NVIC_InitStruct);

	USART_Cmd(USART1,ENABLE);
}
//发送一个字节
void Serial_SendByte(uint8_t Byte){
	USART_SendData(USART1,Byte);
	while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
	
}
//发送一个数组
void Serial_SendArray(uint8_t *Array, uint16_t Length){
	uint16_t i;
	for (i = 0; i < Length; i ++)
	{
		Serial_SendByte(Array[i]);
	}
}


//发送一个字符串
void Serial_SendString(char *String)
{
	uint8_t i;
	for (i = 0; String[i] != '\0'; i ++)
	{
		Serial_SendByte(String[i]);
	}
}
//数字计算
uint32_t Serial_Pow(uint32_t X, uint32_t Y)
{
	uint32_t Result = 1;
	while (Y --)
	{
		Result *= X;
	}
	return Result;
}
//发送数字
void Serial_SendNumber(uint32_t Number, uint8_t Length)
{
	uint8_t i;
	for (i = 0; i < Length; i ++)
	{
		Serial_SendByte(Number / Serial_Pow(10, Length - i - 1) % 10 + '0');
	}
}
//封装printf
int fputc(int ch, FILE *f)
{
	Serial_SendByte(ch);
	return ch;
}
//可变参数
void Serial_Printf(char *format, ...)
{
	char String[100];
	va_list arg;
	va_start(arg, format);
	vsprintf(String, format, arg);
	va_end(arg);
	Serial_SendString(String);
}

uint8_t Serial_GetRxFlag(void)
{
	if (Serial_RxFlag==1)
	{
		Serial_RxFlag=0;
		return 1;
	}
		return 0;
}

uint8_t Serial_GetRxData(void)
{
	return Serial_RxData;
}

void USART1_IRQHandler(void)  
{
	if (USART_GetFlagStatus(USART1,USART_IT_RXNE)==SET)
	{
		Serial_RxData = USART_ReceiveData(USART1);
		Serial_RxFlag =1;
		USART_ClearITPendingBit(USART1,USART_IT_RXNE);
	}
}

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#include "stm32f10x.h"                  // Device header
#include "Delay.h"
#include "OLED.h"
#include "Serial.h"

uint8_t RxData;

int main(void)
{
	OLED_Init();
		OLED_ShowString(1,1,"RxData");

	Serial_Init();

	while (1)
	{
		if(Serial_GetRxFlag()==1){
			RxData = Serial_GetRxData();
			Serial_SendByte(RxData);
			OLED_ShowHexNum(1,8,RxData,2);
		}
	}
}

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