[应用相关] stm32f103c8t6串口 usart1只能发送不能接受

<span style="color: rgb(34, 34, 38); font-family: -apple-system, " sf="" ui="" text",="" arial,="" "pingfang="" sc",="" "hiragino="" sans="" gb",="" "microsoft="" yahei",="" "wenquanyi="" micro="" hei",="" sans-serif,="" simhei,="" simsun;="" font-variant-ligatures:="" common-ligatures;"="">//串口引脚初始化</span>

<span style="color: rgb(34, 34, 38); font-family: -apple-system, " sf="" ui="" text",="" arial,="" "pingfang="" sc",="" "hiragino="" sans="" gb",="" "microsoft="" yahei",="" "wenquanyi="" micro="" hei",="" sans-serif,="" simhei,="" simsun;="" font-variant-ligatures:="" common-ligatures;"="">void Init_Usart(void)</span>

<span style="color: rgb(34, 34, 38); font-family: -apple-system, " sf="" ui="" text",="" arial,="" "pingfang="" sc",="" "hiragino="" sans="" gb",="" "microsoft="" yahei",="" "wenquanyi="" micro="" hei",="" sans-serif,="" simhei,="" simsun;="" font-variant-ligatures:="" common-ligatures;"="">{</span>

<span style="color: rgb(34, 34, 38); font-family: -apple-system, " sf="" ui="" text",="" arial,="" "pingfang="" sc",="" "hiragino="" sans="" gb",="" "microsoft="" yahei",="" "wenquanyi="" micro="" hei",="" sans-serif,="" simhei,="" simsun;="" font-variant-ligatures:="" common-ligatures;"="">GPIO_InitTypeDef GPIO_InitStructure;</span>



<span style="color: rgb(34, 34, 38); font-family: -apple-system, " sf="" ui="" text",="" arial,="" "pingfang="" sc",="" "hiragino="" sans="" gb",="" "microsoft="" yahei",="" "wenquanyi="" micro="" hei",="" sans-serif,="" simhei,="" simsun;="" font-variant-ligatures:="" common-ligatures;"="">RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE);</span>

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;               

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;         

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;       

GPIO_Init(GPIOA, &GPIO_InitStructure);                      

 

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; 

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;   

GPIO_Init(GPIOA, &GPIO_InitStructure);                  

}



//串口配置函数

void Usart_Configuration(uint32_t BaudRate)

{

USART_InitTypeDef USART_InitStructure;



RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);

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;

USART_Init(USART1, &USART_InitStructure);



USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);



USART_Cmd(USART1, ENABLE);



}



//串口中断处理函数

void USART1_IRQHandler(void)

{

uint8_t ReceiveDate;



if(!(USART_GetITStatus(USART1,USART_IT_RXNE)))

{

    USART_ClearITPendingBit(USART1,USART_IT_RXNE);  

    ReceiveDate=USART_ReceiveData(USART1);          

    printf("%d",(char *)ReceiveDate);               

 

    printf("\n\r");                                 

}  

}

//串口中断NVIC配置函数

void Init_NVIC(void)

{



NVIC_InitTypeDef NVIC_InitStructure;



#ifdef VECT_TAB_RAM

  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);   

#else  

 

  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);                                                  

#endif

 

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); 

 

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;           

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;   

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;          

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;             

NVIC_Init(&NVIC_InitStructure);                                 

USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);