STM32串口数据收发相关配置+点灯控制

发表于 2023-10-11 15:46

led.c

#include "stm32f10x.h"

#include "led.h"



void Led_init(void)

{

        GPIO_InitTypeDef Led_init;

        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);

        

        Led_init.GPIO_Mode         = GPIO_Mode_Out_PP;

        Led_init.GPIO_Pin = GPIO_Pin_13;

        Led_init.GPIO_Speed = GPIO_Speed_50MHz;

        GPIO_Init(GPIOC, &Led_init);

}

发表于 2023-10-11 15:46

usart.h

复制

#include "stm32f10x.h"

#include <stdio.h>



void usart_init(void);

void usartSendByte(USART_TypeDef* USARTx, uint16_t Data);

void usartSendStr(USART_TypeDef* USARTx,char *str);

发表于 2023-10-11 15:47

usart.c

#include "usart.h"
#include "stm32f10x.h"

void usart_init(void)
{
GPIO_InitTypeDef gpio_init;
USART_InitTypeDef usartStruct;
NVIC_InitTypeDef nvic_initStruct;

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);

//2.1 TX
gpio_init.GPIO_Mode = GPIO_Mode_AF_PP;
gpio_init.GPIO_Pin = GPIO_Pin_9;
gpio_init.GPIO_Speed = GPIO_Speed_10MHz;

GPIO_Init(GPIOA,&gpio_init);

//2.2 RX
gpio_init.GPIO_Mode = GPIO_Mode_IN_FLOATING;
gpio_init.GPIO_Pin = GPIO_Pin_10;

GPIO_Init(GPIOA,&gpio_init);

usartStruct.USART_BaudRate = 115200;
usartStruct.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
usartStruct.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
usartStruct.USART_Parity = USART_Parity_No;
usartStruct.USART_StopBits = USART_StopBits_1;
usartStruct.USART_WordLength = USART_WordLength_8b;

USART_Init(USART1,&usartStruct);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
USART_Cmd(USART1, ENABLE );

nvic_initStruct.NVIC_IRQChannel = USART1_IRQn;
nvic_initStruct.NVIC_IRQChannelPreemptionPriority = 1;
nvic_initStruct.NVIC_IRQChannelSubPriority = 1;
nvic_initStruct.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&nvic_initStruct);
}

void usartSendByte(USART_TypeDef* USARTx, uint16_t Data)
{
USART_SendData(USARTx,Data);
while(USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);

}

void usartSendStr(USART_TypeDef* USARTx,char *str)
{
uint16_t i = 0;
do{
usartSendByte(USARTx,*(str+i));
i++;
}while(*(str+i) != '\0');
while(USART_GetFlagStatus(USARTx, USART_FLAG_TC) == RESET);
}

int fputc(int ch,FILE *f)
{
USART_SendData(USART1,(uint8_t)ch);
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
return (ch);
}

int fgetc(FILE *f)
{
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);
return (int) USART_ReceiveData(USART1);
}

发表于 2023-10-11 15:47

main.c
#include "stm32f10x.h"
#include "led.h"
#include "relay.h"
#include "exti.h"
#include "usart.h"
#include "stdio.h"

int main()
{
Led_init();
Relay_Init();
exti_init();
usart_init();

GPIO_SetBits(GPIOA, GPIO_Pin_3);
GPIO_SetBits(GPIOC, GPIO_Pin_13);

}

void EXTI1_IRQHandler(void)
{
if (EXTI_GetITStatus( EXTI_Line1 ) != RESET)
{
GPIO_ResetBits(GPIOA, GPIO_Pin_3);
usartSendStr(USART1,"Open light success\r\n");
delay(1000);
GPIO_SetBits(GPIOA, GPIO_Pin_3);
usartSendStr(USART1,"Close light success\r\n");
}
EXTI_ClearFlag(EXTI_Line1);
}

void USART1_IRQHandler(void)
{
char temp;
if(USART_GetITStatus(USART1,USART_IT_RXNE) != RESET){
temp = USART_ReceiveData(USART1);
if(temp == 'o'){
GPIO_ResetBits(GPIOC, GPIO_Pin_13);
usartSendStr(USART1,"Open LED light success\r\n");
}
if(temp == 'c'){
GPIO_SetBits(GPIOC, GPIO_Pin_13);
usartSendStr(USART1,"Close LED light success\r\n");
}
}
}

发表于 2023-10-11 19:20

这么多配置文件吗

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