STM32 UART4 UART5

今天在調(diào)試串口程序時(shí)發(fā)現(xiàn)（STM32107RC），UART4明明就是配置好了，可以發(fā)送，但是就是不能中斷接受。在網(wǎng)上看到很多人也有這個(gè)疑問(wèn)，今晚終于搞定，順便寫(xiě)篇博客，希望能幫到下一個(gè)遇到同樣問(wèn)題的人。最主要的問(wèn)題是啟動(dòng)代碼有問(wèn)題，不知道我那啟動(dòng)代碼是什么年代的了，所以沒(méi)有添加UART4，UART5.

如果你出現(xiàn)了這個(gè)問(wèn)題，去看看啟動(dòng)代碼是否有

IMPORTUART4_IRQHandler
IMPORTUART5_IRQHandler

DCDUART4_IRQHandler
DCDUART5_IRQHandler

如果有的話，還不行，那我也不清楚了。另尋他人！

沒(méi)有的話去找個(gè)新的啟動(dòng)引導(dǎo)程序。

順便也把我初始化配置貼出來(lái)，大家也好比較！這樣的初始化我是可以運(yùn)行！

GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE);

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);


GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_Init(GPIOC, &GPIO_InitStructure);

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(UART4, &USART_InitStructure);

USART_ITConfig(UART4, USART_IT_RXNE, ENABLE);

USART_Cmd(UART4, ENABLE);

NVIC_InitStructure.NVIC_IRQChannel = UART4_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

void UART4_IRQHandler(void)
{能進(jìn)入中斷就行}

Send_String("ABC",3);//發(fā)送函數(shù)

void Send_String(char *buff,INT16U Len)
{
INT16U i;
for(i=0;i{
USART_SendData(UART4,*buff++);
while(USART_GetFlagStatus(UART4, USART_FLAG_TXE) == RESET);
}

}

應(yīng)該就這些了。