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修改uart2和uart3的时钟初始化函数的错误

main
cgy 2026-02-10 09:08:03 +08:00
parent e2acf033d7
commit 789788931e
1 changed files with 11 additions and 11 deletions
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22
SYSTEM/usart/usart.c
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@ -211,11 +211,11 @@ void uart2_init(u32 bound){
NVIC_InitTypeDef NVIC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //使能GPIOA时钟
RCC_APB2PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);//使能USART1时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);//使能USART1时钟
//串口1对应引脚复用映射
GPIO_PinAFConfig(GPIOA,GPIO_PinSource2,GPIO_AF_USART2); //GPIOA9复用为USART1
GPIO_PinAFConfig(GPIOA,GPIO_PinSource3,GPIO_AF_USART2); //GPIOA10复用为USART1
//串口2对应引脚复用映射
GPIO_PinAFConfig(GPIOA,GPIO_PinSource2,GPIO_AF_USART2); //GPIOA2复用为USART2
GPIO_PinAFConfig(GPIOA,GPIO_PinSource3,GPIO_AF_USART2); //GPIOA3复用为USART3
//USART1端口配置
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3; //GPIOA9与GPIOA10
@ -293,21 +293,21 @@ void uart3_init(u32 bound){
NVIC_InitTypeDef NVIC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD,ENABLE); //使能GPIOA时钟
RCC_APB2PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);//使能USART1时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);//使能USART1时钟
//串口1对应引脚复用映射
GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_USART3); //GPIOA9复用为USART1
GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART3); //GPIOA10复用为USART1
//串口3对应引脚复用映射
GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_USART3); //GPIOD8复用为USART1
GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART3); //GPIOD9复用为USART1
//USART1端口配置
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; //GPIOA9与GPIOA10
//USART3端口配置
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9; //
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
GPIO_Init(GPIOD,&GPIO_InitStructure); //初始化PA9，PA10
//USART1 初始化设置
//USART3 初始化设置
USART_InitStructure.USART_BaudRate = bound;//波特率设置
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式
USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位