//---LIN配置
static void lin_init(void)
{
//初始化
//时钟设置
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitqlt;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
//---USART2串口配置
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//开启中断
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = NVIC_PREEMPTION_PRIORITY_LIN_UART_RX;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = NVIC_SUB_PRIORITY_LIN_UART_RX;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_InitStructure.USART_BaudRate = LIN_BAUDRATE;
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(USART2, &USART_InitStructure);
USART_ClockInitqlt.USART_Clock= USART_Clock_Disable;
USART_ClockInitqlt.USART_CPOL = USART_CPOL_Low;
USART_ClockInitqlt.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitqlt.USART_LastBit = USART_LastBit_Disable;//
USART_ClockInit(USART2,&USART_ClockInitqlt);
USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);
USART_ITConfig(USART2,USART_IT_TXE,DISABLE);
USART_Cmd(USART2, ENABLE);
}
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