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发表于 2020-5-25 12:00:44
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没有关系,我一般这么做:void uart6_rx_irq(void)
{
uint8_t chTemp = 0;
//½óêÕ
if(SET == USART_GetITStatus(USART6, USART_IT_RXNE)){
USART_ClearITPendingBit(USART6, USART_IT_RXNE);
chTemp=USART_ReceiveData(USART6);
uartx_rx(&s_tUart6Parameter,chTemp);
}
}
void uart6_tx_irq(void)
{
fsm_rt_t tTemp = fsm_rt_err;
uint8_t chTemp = 0;
//·¢Ëí
if(SET == USART_GetITStatus(USART6, USART_IT_TC)){
USART_ClearITPendingBit(USART6, USART_IT_TC);
tTemp = uartx_tx(&s_tUart6Parameter,&chTemp);
switch(tTemp){
case fsm_rt_on_going:
USART_SendData(USART6, chTemp);
break;
case fsm_rt_cpl:
USART_ITConfig(USART6,USART_IT_TC,DISABLE);
break;
case fsm_rt_err:
USART_ITConfig(USART6,USART_IT_TC,DISABLE);
break;
default:
FSM_DEFAULT_ACTION();
}
}
}
void uart6_init(uint32_t wBaudRate)
{
//ê1Äüê±Öó
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6,ENABLE);
//½ûÖ1UART
USART_Cmd(USART6, DISABLE);
//3õê¼»ˉGPIO
do{
//GPIO¶Ë¿úéèÖÃ
const static GPIO_InitTypeDef c_tGPIO_InitStructure={
//USARTX¶Ë¿úÅäÖÃ
.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7, //GPIO
.GPIO_Mode = GPIO_Mode_AF, //¸′óÃ1|Äü
.GPIO_Speed = GPIO_Speed_50MHz, //Ëù¶è50MHz
.GPIO_OType = GPIO_OType_PP, //íÆíì¸′óÃêä3ö
.GPIO_PuPd = GPIO_PuPd_UP, //éÏà-
};
//′®¿ú¶Ôó|òy½Å¸′óÃó3éä
GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_USART6);
GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_USART6);
GPIO_Init(GPIOC,(GPIO_InitTypeDef*)&c_tGPIO_InitStructure);
}while(0);
//USARTX 3õê¼»ˉéèÖÃ
do{
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = wBaudRate; //2¨ìØÂêéèÖÃ
USART_InitStructure.USART_WordLength = USART_WordLength_8b; //×Ö3¤Îa8λêy¾Y¸ñê½
USART_InitStructure.USART_StopBits = USART_StopBits_1; //ò»¸öí£Ö1λ
USART_InitStructure.USART_Parity = USART_Parity_No; //ÎTÆæÅ¼D£Ñéλ
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //ÎTó2¼têy¾Yá÷¿ØÖÆ
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //êÕ·¢Ä£ê½
USART_Init(USART6, &USART_InitStructure);
}while(0);
//ê1Äü′®¿ú
USART_Cmd(USART6, ENABLE);
USART_ClearFlag(USART6,USART_FLAG_TC);
USART_ClearITPendingBit(USART6, USART_IT_TC);
USART_ClearITPendingBit(USART6, USART_IT_RXNE);
USART_ITConfig(USART6,USART_IT_TC,DISABLE);
USART_ITConfig(USART6,USART_IT_RXNE,ENABLE); //¿aÆôÏà1ØÖD¶Ï
}
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