采用的是STM32F105，串口输入始终是乱码
以下是串口的配置信息
void USART1_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
// USART_ClockInitTypeDef USART_ClockInitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |
RCC_APB2Periph_AFIO |
RCC_APB2Periph_USART1 ,
ENABLE);
/* A9 USART1_Tx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* A10 USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// /* Configure the NVIC Preemption Priority Bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
//
// /* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_Cmd(USART1, DISABLE);
USART_InitStructure.USART_BaudRate = 115200 ;
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_ClockInitStructure.USART_Clock = USART_Clock_Disable;
// USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
// USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
// USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
//
// USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_Cmd(USART1, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
}
void USART1_IRQHandler(void)
{
u8 c;
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
c=USART1->DR;
USART1_SendByte(c);
}
}
void USART1_Putc(unsigned char c)
{
USART_SendData(USART1, c);
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET );
}
void USART1_Puts(char * str)
{
while(*str)
{
USART_SendData(USART1, *str++);
/* Loop until the end of transmission */
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}
}
主程序如下
USART1_Configuration();
USART1_Puts("CAN1 CAN2 Init OK!");
但是输出的始终是乱码，中断接收的一个单个数据后打印后又是正常的。 |
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