相同方法初始化串口,USART1接受到乱码,USART2就正常,请问有谁知道是为什么?下面是初始化方法
void USART_Config(USART_Type* USARTx){
GPIO_InitType GPIO_InitStructure;
USART_InitType USART_InitStructure;
NVIC_InitType NVIC_InitStructure;
/* Configure the NVIC Preemption Priority Bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
if(USARTx == USART1){
RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_USART1| RCC_APB2PERIPH_GPIOA , ENABLE);
GPIO_InitStructure.GPIO_Pins = GPIO_Pins_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pins = GPIO_Pins_9;
GPIO_InitStructure.GPIO_MaxSpeed = GPIO_MaxSpeed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/*中断*/
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}else if(USARTx == USART2){
RCC_APB1PeriphClockCmd(RCC_APB1PERIPH_USART2 , ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOA,ENABLE);
// GPIO_PinsRemapConfig(GPIO_Remap_USART2, ENABLE);
GPIO_InitStructure.GPIO_Pins = GPIO_Pins_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pins = GPIO_Pins_2;
GPIO_InitStructure.GPIO_MaxSpeed = GPIO_MaxSpeed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/*中断*/
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = 9600;
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(USARTx, &USART_InitStructure);
USART_ClrBuf(USARTx);
/* Enable USART Receive and Transmit interrupts */
USART_INTConfig(USARTx, USART_INT_RDNE, ENABLE);
USART_Cmd(USARTx, ENABLE);
}
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