STM32F103RBT6串口3配置不成功啥问题

Posted 2023-03-19

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);


/*************************************************
函数: void GPIO_Config(void）
功能: GPIO配置
**************************************************/
void GPIO_Configuration(void)

GPIO_InitTypeDef GPIO_InitStructure;

// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
// GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; //复用输出
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用输出
// GPIO_Init(GPIOA, &GPIO_InitStructure);
//
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;; //浮空输入
// GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //tx
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; //复用输出
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用输出
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; //rx
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;; //浮空输入
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; //复用输出
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //复用输出
GPIO_Init(GPIOB, &GPIO_InitStructure);


void NVIC_Configuration(void)

NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); //设置中断优先级
NVIC_InitStructure.NVIC_IRQChannel =USART3_IRQChannel; //中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //强占优先级
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;//次优先级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //通道中断使能
NVIC_Init(&NVIC_InitStructure);//初始化中断

void USART3_Config(void)

USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 115200; //波特率
USART_InitStructure.USART_WordLength = USART_WordLength_8b; //8位数据
USART_InitStructure.USART_StopBits = USART_StopBits_1; //停止位
USART_InitStructure.USART_Parity = USART_Parity_No; //奇偶失能
USART_InitStructure.USART_HardwareFlowControl = //硬件流控制失能
USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx; //发送使能 接收

USART_Init(USART3,&USART_InitStructure);
USART_ITConfig(USART3,USART_IT_RXNE,ENABLE);
USART_ITConfig(USART3, USART_IT_IDLE, ENABLE);//开启超时中断
USART_Cmd(USART3, ENABLE);
USART_ClearFlag(USART3,USART_FLAG_TC);

说起来我曾经故意输错PIN码，然后搞得好几张电话卡废了不过现在都是用指纹解锁和结构光解锁，PIN码在手机上真没啥用了。 参考技术A 66 参考技术B 不知道道你在 参考技术C 😁😔🕴️🕴️👰👰