STM32f103 双串口配置和中断

最新推荐文章于 2025-06-21 11:02:21 发布

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最新推荐文章于 2025-06-21 11:02:21 发布

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分类专栏： ST单片机

本文链接：https://blog.youkuaiyun.com/allen19881119/article/details/51126090

这篇博客介绍了如何在STM32F103上配置两个串口并启用中断处理。内容涵盖了使用IAR 7.1编译器和stm32_uart.h头文件进行串口初始化及中断函数设置的基础步骤。

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//代码仅仅是配置使能串口和相应的中断处理函数，具体功能需要自己定义

//IAR 7.1

#include "stm32_uart.h"

uint8_t card_ture=0;
uint16_t add_count=0;
uint8_t Key_Data[1]={0};
uint8_t Media_Flag=0;

uint8_t card_code[4]; //[5:1]save the card SN, [0]valid or invalid
uint8_t Temp_Card_Num[4];
uint8_t cardcode_rx_complete = 0;

uint32_t uart_config_record_map[4] = {
0,
UART_CONFIG_UART_MEMORY_ADDR,
FIRMWARE_VERSION_MEMORY_ADDR,
SCHEME_SPECIFIC_MEMORY_ADDR
};

UartConfig_TypeDef the_uart_config;

void stm32_uart_init(uint8_t uart_port, uint32_t BaudRate)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

/*Fill the structure of uart init*/
if(uart_port == UART2)
{
/*Fill the structure of uart init*/
USART_InitStructure.USART_BaudRate = BaudRate;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
/*Enable priph clock*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);


/*Config gpio as uart pin */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);

/*Config gpio as uart pin */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;