各位大神,有没有搞过lin总线的我配置的为什么不能进中断,void USART2_IRQHandler(void)
{
LED0=1;
lin_data.ID=USART_ReceiveData(USART2);
}
void RS485_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//ê1ÄüGPIOA,Dê±Öó
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);//ê1ÄüUSART2ê±Öó
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //PA2
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíì
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;//PA3
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //¸¡¿Õêäèë
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 19200;//2¨ìØÂêéèÖÃ
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//8λêy¾Y3¤¶è
USART_InitStructure.USART_StopBits = USART_StopBits_1;//ò»¸öí£Ö1λ
USART_InitStructure.USART_Parity = USART_Parity_No;///ÆæżD£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(USART2, &USART_InitStructure); ; //3õê¼»ˉ′®¿ú
USART_LINBreakDetectLengthConfig(USART2, USART_LINBreakDetectLength_11b);
USART_LINCmd(USART2, ENABLE);
USART_Cmd(USART2, ENABLE); //ê1Äü′®¿ú
USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
USART_ITConfig(USART2, USART_IT_TXE, DISABLE);
USART_ITConfig(USART2, USART_IT_LBD, DISABLE);
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; //ê1Äü′®¿ú2ÖD¶Ï
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //ÏèÕ¼óÅÏ輶2¼¶
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; //′óóÅÏ輶2¼¶
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //ê1Äüía2¿ÖD¶Ïí¨μà
NVIC_Init(&NVIC_InitStructure); //¸ù¾YNVIC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèNVIC¼Ä′æÆ÷
}
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