论坛 › 问答 › STM32L476RG-Nucleo官方历程，LPTIM唤醒单片机程序不能用

qihang3307 发表于 2019-5-30 08:25:39

STM32L476RG-Nucleo官方历程，LPTIM唤醒单片机程序不能用

本帖最后由 qihang3307 于 2019-5-30 14:18 编辑

下面是程序，问题是根本就没有进入中断，更不用说唤醒了，这么看主函数里面不是开启中断了嘛，大神们怎么解决，求助,
void MX_LPTIM1_Init(void)
{
/* USER CODE BEGIN LPTIM1_Init 0 */
/* USER CODE END LPTIM1_Init 0 */
/* USER CODE BEGIN LPTIM1_Init 1 */
/* USER CODE END LPTIM1_Init 1 */
hlptim1.Instance = LPTIM1;
hlptim1.Init.Clock.Source = LPTIM_CLOCKSOURCE_APBCLOCK_LPOSC;
hlptim1.Init.Clock.Prescaler = LPTIM_PRESCALER_DIV1;
hlptim1.Init.Trigger.Source = LPTIM_TRIGSOURCE_SOFTWARE;
hlptim1.Init.OutputPolarity = LPTIM_OUTPUTPOLARITY_HIGH;
hlptim1.Init.UpdateMode = LPTIM_UPDATE_IMMEDIATE;
hlptim1.Init.CounterSource = LPTIM_COUNTERSOURCE_EXTERNAL;
hlptim1.Init.Input1Source = LPTIM_INPUT1SOURCE_GPIO;
hlptim1.Init.Input2Source = LPTIM_INPUT2SOURCE_GPIO;
if (HAL_LPTIM_Init(&hlptim1) != HAL_OK)
{
    Error_Handler();
}
/* USER CODE BEGIN LPTIM1_Init 2 */
/* USER CODE END LPTIM1_Init 2 */
}
/**
* @brief LPTIM MSP Initialization
* This function configures the hardware resources used in this example
* @param hlptim: LPTIM handle pointer
* @retval None
*/
void HAL_LPTIM_MspInit(LPTIM_HandleTypeDef* hlptim)
{
if(hlptim->Instance==LPTIM1)
{
/* USER CODE BEGIN LPTIM1_MspInit 0 */
/* USER CODE END LPTIM1_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_LPTIM1_CLK_ENABLE();
    /* LPTIM1 interrupt Init */
    HAL_NVIC_SetPriority(LPTIM1_IRQn, 0, 2);
    HAL_NVIC_EnableIRQ(LPTIM1_IRQn);
/* USER CODE BEGIN LPTIM1_MspInit 1 */

/* USER CODE END LPTIM1_MspInit 1 */
}
}

int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USART1_UART_Init();
MX_LPTIM1_Init();
/* USER CODE BEGIN 2 */
if (HAL_LPTIM_Counter_Start_IT(&hlptim1, 1000) != HAL_OK)
{
    Error_Handler();
}
HAL_PWREx_EnterSTOP1Mode(PWR_STOPENTRY_WFI);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{

}
}
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInit;
    /**Initializes the CPU, AHB and APB busses clocks
    */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 1;
RCC_OscInitStruct.PLL.PLLN = 10;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
    _Error_Handler(__FILE__, __LINE__);
}
    /**Initializes the CPU, AHB and APB busses clocks
    */
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
{
    _Error_Handler(__FILE__, __LINE__);
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1
//                   |RCC_PERIPHCLK_USART2
                  |RCC_PERIPHCLK_LPTIM1
                  |RCC_PERIPHCLK_LPUART1;
PeriphClkInit.Lptim1ClockSelection = RCC_LPTIM1CLKSOURCE_LSI;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
    _Error_Handler(__FILE__, __LINE__);
}
    /**Configure the main internal regulator output voltage
    */
if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
{
    _Error_Handler(__FILE__, __LINE__);
}
    /**Configure the Systick interrupt time
    */
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
    /**Configure the Systick
    */
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}

/**
* @brief This function handles LPTIM2 global interrupt.
*/
void LPTIM1_IRQHandler(void)
{
/* USER CODE BEGIN LPTIM2_IRQn 0 */
/* USER CODE END LPTIM2_IRQn 0 */
HAL_LPTIM_IRQHandler(&hlptim1);
/* USER CODE BEGIN LPTIM2_IRQn 1 */
/* USER CODE END LPTIM2_IRQn 1 */
}

void HAL_LPTIM_AutoReloadMatchCallback(LPTIM_HandleTypeDef *hlptim)
{
/* Turn on LED2 */
BSP_LED_Toggle(LED2);
printf("计数完成\n");
}

qihang3307 发表于 2019-5-30 14:18:20

已解决，hlptim1.Init.CounterSource = LPTIM_COUNTERSOURCE_EXTERNAL;是不对的。应该改成hlptim1.Init.CounterSource = LPTIM_COUNTERSOURCE_INTERNAL;

mvvm 发表于 2019-7-13 13:31:53

这个例程是唤醒之后进入while(1)，然后就不会进去了吧！
我现在调试LPTIM唤醒时碰到一个问题，LPTIM中断能进去但是一直唤醒不了单片机，不知道是不是哪里没理解对。楼主能指点一下吗

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