/******************************************************************************/
void LPUART_Config1(void) //标定 20200612
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.Pin = PA4_NBRST;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
HAL_GPIO_WritePin(GPIOA, PA4_NBRST,GPIO_PIN_RESET); //TCS=0 20220110
/* UART configured as follows:
- Word Length = 8 Bits
- Stop Bit = One Stop bit
- Parity = None
- BaudRate = 9600 baud
- Hardware flow control disabled (RTS and CTS signals) */
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_11|GPIO_PIN_10);
LPUartHandle.Instance = LPUART1;
HAL_UART_DeInit(&LPUartHandle); //复位串口
//LPUartHandle.Init.BaudRate = 9600;
BaudRate_Config(Baud_Rate); //波特率设置 //20220117
LPUartHandle.Init.WordLength = UART_WORDLENGTH_8B; //字长为 8 位
LPUartHandle.Init.StopBits = UART_STOPBITS_1; //一个停止位
LPUartHandle.Init.Parity = UART_PARITY_NONE; //无奇偶校验位
LPUartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE; //无硬件数据流控制
//LPUartHandle.Init.OverSampling = UART_OVERSAMPLING_16;
LPUartHandle.Init.Mode = UART_MODE_TX_RX; //收发模式
if(HAL_UART_Init(&LPUartHandle) != HAL_OK)
{
Error_Handler(); //初始化串口
}
/* Enable the UART Data Register not empty Interrupt */
HAL_UART_Receive_IT(&LPUartHandle,&LPRxBuffer, 1);//开中断接收
}
/**********************************************************************
函数名称: uart_exit_init
函数功能： RX引脚配置为外部中断
入口：
出口：
备注：
**********************************************************************/
void uart_exit_init(void)
{
/*
__HAL_UART_DISABLE_IT(&Uart2Handle, UART_IT_RXNE); //20200703
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);
HAL_UART_DeInit(&Uart2Handle);
GPIO_InitStructure.Pin = GPIO_PIN_2|GPIO_PIN_3; //配置PA2、PA3为输入口
GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
GPIO_InitStructure.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
__HAL_RCC_GPIOA_CLK_ENABLE(); //使能(开启)引脚对应IO端口时钟
*/
__HAL_UART_DISABLE_IT(&LPUartHandle, UART_IT_RXNE); //20200612
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_11|GPIO_PIN_10);
HAL_UART_DeInit(&LPUartHandle); //复位串口
HAL_Delay(1);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.Pin = GPIO_PIN_10; //配置PB10为输入口
GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
GPIO_InitStructure.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
__HAL_RCC_GPIOB_CLK_ENABLE(); //使能(开启)引脚对应IO端口时钟
GPIO_InitStructure.Mode = GPIO_MODE_IT_FALLING; //配置PB11为外部中断脚
GPIO_InitStructure.Pull = GPIO_NOPULL; //GPIO_NOPULL 20220121
GPIO_InitStructure.Pin = GPIO_PIN_11; //20200522
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
__HAL_GPIO_EXTI_CLEAR_IT(GPIO_PIN_11);
/* Enable and set EXTI4_15 Interrupt to the lowest priority */
HAL_NVIC_SetPriority(EXTI4_15_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);
/* Enable and set EXTI0_11 Interrupt to the highest priority */
HAL_NVIC_SetPriority(EXTI0_1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI0_1_IRQn);
}
/******************************************************************************/
void EXTI4_15_IRQHandler(void)
{
// EXTI line interrupt detected
if(__HAL_GPIO_EXTI_GET_IT(GPIO_PIN_11) != RESET)
{
__HAL_GPIO_EXTI_CLEAR_IT(GPIO_PIN_11);
SystemClock_Config();
LPUART_Config1(); //标定 20200612
}
}
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