最近遇到奇怪的问题，调试STM32F405时，配置的USART1一直用不了，调试时代码左侧灰色条都没有，应该是运行都不会运行，找了几天也找不出原因。。。请教高人
部分代码如下：
void RCC_cfg()
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 | RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOC, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_USART1, ENABLE);
}
void GPIO_cfg()
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1);//ÅäÖóÉUSART1_TX
GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1); //ÅäÖóÉUSART1_RX
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void USART_cfg()
{
USART_InitTypeDef USART_InitStructure;
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = 38400;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_Init(USART1, &USART_InitStructure);
USART_ClearFlag(USART1, USART_FLAG_TC);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
USART_Cmd(USART1, ENABLE);
}
void NVIC_cfg()
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
int main(void)
{
RCC_cfg();
USART_cfg();
GPIO_cfg();
// SPI_cfg();
// ADC_cfg();
// DMA_cfg();
NVIC_cfg();
// ADC_SoftwareStartConv(ADC1); // ¿ªÆô ADC_DMA ת»»
while(1);
} |
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