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  1. /* USER CODE BEGIN Header */
  2. /**
  3.   ******************************************************************************
  4.   * @file           : main.c
  5.   * @brief          : Main program body
  6.   ******************************************************************************
  7.   * @attention
  8.   *
  9.   * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  10.   * All rights reserved.</center></h2>
  11.   *
  12.   * This software component is licensed by ST under BSD 3-Clause license,
  13.   * the "License"; You may not use this file except in compliance with the
  14.   * License. You may obtain a copy of the License at:
  15.   *                        opensource.org/licenses/BSD-3-Clause
  16.   *
  17.   ******************************************************************************
  18.   */
  19. /* USER CODE END Header */
  20.  
  21. /* Includes ------------------------------------------------------------------*/
  22. #include "main.h"
  23.  
  24. /* Private includes ----------------------------------------------------------*/
  25. /* USER CODE BEGIN Includes */
  26. #include <string.h>
  27. /* USER CODE END Includes */
  28.  
  29. /* Private typedef -----------------------------------------------------------*/
  30. /* USER CODE BEGIN PTD */
  31.  
  32. /* USER CODE END PTD */
  33.  
  34. /* Private define ------------------------------------------------------------*/
  35. /* USER CODE BEGIN PD */
  36. /* USER CODE END PD */
  37.  
  38. /* Private macro -------------------------------------------------------------*/
  39. /* USER CODE BEGIN PM */
  40.  
  41. /* USER CODE END PM */
  42.  
  43. /* Private variables ---------------------------------------------------------*/
  44. UART_HandleTypeDef hlpuart1;
  45. UART_HandleTypeDef huart1;
  46.  
  47. RTC_HandleTypeDef hrtc;
  48.  
  49. /* USER CODE BEGIN PV */
  50.  
  51. /* USER CODE END PV */
  52.  
  53. /* Private function prototypes -----------------------------------------------*/
  54. void SystemClock_Config(void);
  55. static void MX_GPIO_Init(void);
  56. static void MX_RTC_Init(void);
  57. static void MX_LPUART1_UART_Init(void);
  58. /* USER CODE BEGIN PFP */
  59.  
  60. /* USER CODE END PFP */
  61.  
  62. /* Private user code ---------------------------------------------------------*/
  63. /* USER CODE BEGIN 0 */
  64. void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc){
  65.   RTC_TimeTypeDef myTime = {0};
  66.   RTC_DateTypeDef myDate = {0};
  67.  
  68.   HAL_RTC_GetTime(hrtc, &myTime, RTC_FORMAT_BIN);
  69.   HAL_RTC_GetDate(hrtc, &myDate, RTC_FORMAT_BIN);
  70. }
  71. /* USER CODE END 0 */
  72.  
  73. /**
  74.   * @brief  The application entry point.
  75.   * @retval int
  76.   */
  77. int main(void)
  78. {
  79.   /* USER CODE BEGIN 1 */
  80.   GPIO_InitTypeDef GPIO_InitStructure;
  81.   /* USER CODE END 1 */
  82.  
  83.   /* MCU Configuration--------------------------------------------------------*/
  84.  
  85.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  86.   HAL_Init();
  87.  
  88.   /* USER CODE BEGIN Init */
  89.  
  90.   /* USER CODE END Init */
  91.  
  92.   /* Configure the system clock */
  93.   SystemClock_Config();
  94.  
  95.   /* USER CODE BEGIN SysInit */
  96.   __HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_MSI);
  97.   /* USER CODE END SysInit */
  98.  
  99.   /* Initialize all configured peripherals */
  100.   MX_GPIO_Init();
  101.   MX_RTC_Init();
  102.   MX_LPUART1_UART_Init();
  103.   /* USER CODE BEGIN 2 */
  104.  
  105.   /* USER CODE END 2 */
  106.  
  107.   /* Infinite loop */
  108.   /* USER CODE BEGIN WHILE */
  109.   while (1)
  110.   {
  111.     //HAL_GPIO_TogglePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin);
  112.     HAL_Delay(5000);
  113.     char* sleep_string = "going to sleep!\r\n";
  114.     char* awake_string = "I'm awake!!\r\n";
  115.     HAL_UART_Transmit(&hlpuart1,(uint8_t*) sleep_string ,strlen(sleep_string) , 2000);
  116.     HAL_GPIO_WritePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin, GPIO_PIN_SET);
  117.  
  118.     /* Configure all GPIO port pins in Analog Input mode (floating input trigger OFF) */
  119.     /* Note: Debug using ST-Link is not possible during the execution of this   */
  120.     /*       example because communication between ST-link and the device       */
  121.     /*       under test is done through UART. All GPIO pins are disabled (set   */
  122.     /*       to analog input mode) including  UART I/O pins.           */
  123.     GPIO_InitStructure.Pin = GPIO_PIN_All;
  124.     GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
  125.     GPIO_InitStructure.Pull = GPIO_NOPULL;
  126.  
  127.     HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
  128.     HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
  129.     HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
  130.     HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
  131.     HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);
  132.     HAL_GPIO_Init(GPIOF, &GPIO_InitStructure);
  133.     HAL_GPIO_Init(GPIOG, &GPIO_InitStructure);
  134.     HAL_GPIO_Init(GPIOH, &GPIO_InitStructure);
  135.     HAL_GPIO_Init(GPIOI, &GPIO_InitStructure);
  136.  
  137.     /* Disable GPIOs clock */
  138.     __HAL_RCC_GPIOA_CLK_DISABLE();
  139.     __HAL_RCC_GPIOB_CLK_DISABLE();
  140.     __HAL_RCC_GPIOC_CLK_DISABLE();
  141.     __HAL_RCC_GPIOD_CLK_DISABLE();
  142.     __HAL_RCC_GPIOE_CLK_DISABLE();
  143.     __HAL_RCC_GPIOF_CLK_DISABLE();
  144.     __HAL_RCC_GPIOG_CLK_DISABLE();
  145.     __HAL_RCC_GPIOH_CLK_DISABLE();
  146.     __HAL_RCC_GPIOI_CLK_DISABLE();
  147.  
  148.     /* Enter STOP 2 mode */
  149.     HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
  150.  
  151.     /* ... STOP2 mode ... */
  152.  
  153.     /* Re-configure the system clock to 120 MHz based on MSI, enable and
  154.        select PLL as system clock source (PLL is disabled in STOP mode) */
  155.     //SYSCLKConfig_STOP();
  156.     SystemClock_Config();
  157.  
  158.     MX_GPIO_Init();
  159.  
  160.     HAL_GPIO_WritePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin, GPIO_PIN_RESET);
  161.  
  162.     HAL_UART_MspInit(&hlpuart1);
  163.  
  164.     HAL_UART_Transmit(&hlpuart1,(uint8_t*) awake_string ,strlen(awake_string) , 2000);
  165.  
  166.     /* USER CODE END WHILE */
  167.  
  168.     /* USER CODE BEGIN 3 */
  169.   }
  170.   /* USER CODE END 3 */
  171. }
  172.  
  173. /**
  174.   * @brief System Clock Configuration
  175.   * @retval None
  176.   */
  177. void SystemClock_Config(void)
  178. {
  179.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  180.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  181.   RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  182.  
  183.   /** Configure the main internal regulator output voltage
  184.   */
  185.   if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST) != HAL_OK)
  186.   {
  187.     Error_Handler();
  188.   }
  189.   /** Configure LSE Drive Capability
  190.   */
  191.   HAL_PWR_EnableBkUpAccess();
  192.   __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
  193.   /** Initializes the CPU, AHB and APB busses clocks
  194.   */
  195.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE|RCC_OSCILLATORTYPE_MSI;
  196.   RCC_OscInitStruct.LSEState = RCC_LSE_ON;
  197.   RCC_OscInitStruct.MSIState = RCC_MSI_ON;
  198.   RCC_OscInitStruct.MSICalibrationValue = 0;
  199.   RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;
  200.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  201.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
  202.   RCC_OscInitStruct.PLL.PLLM = 1;
  203.   RCC_OscInitStruct.PLL.PLLN = 60;
  204.   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  205.   RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
  206.   RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
  207.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  208.   {
  209.     Error_Handler();
  210.   }
  211.   /** Initializes the CPU, AHB and APB busses clocks
  212.   */
  213.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  214.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  215.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  216.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  217.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  218.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  219.  
  220.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  221.   {
  222.     Error_Handler();
  223.   }
  224.   PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_LPUART1;
  225.   PeriphClkInit.Lpuart1ClockSelection = RCC_LPUART1CLKSOURCE_LSE;
  226.   PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
  227.   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  228.   {
  229.     Error_Handler();
  230.   }
  231. }
  232.  
  233. /**
  234.   * @brief LPUART1 Initialization Function
  235.   * @param None
  236.   * @retval None
  237.   */
  238. static void MX_LPUART1_UART_Init(void)
  239. {
  240.  
  241.   /* USER CODE BEGIN LPUART1_Init 0 */
  242.  
  243.   /* USER CODE END LPUART1_Init 0 */
  244.  
  245.   /* USER CODE BEGIN LPUART1_Init 1 */
  246.  
  247.   /* USER CODE END LPUART1_Init 1 */
  248.   hlpuart1.Instance = LPUART1;
  249.   hlpuart1.Init.BaudRate = 9600;
  250.   hlpuart1.Init.WordLength = UART_WORDLENGTH_8B;
  251.   hlpuart1.Init.StopBits = UART_STOPBITS_1;
  252.   hlpuart1.Init.Parity = UART_PARITY_NONE;
  253.   hlpuart1.Init.Mode = UART_MODE_TX_RX;
  254.   hlpuart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  255.   hlpuart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  256.   hlpuart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
  257.   hlpuart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  258.   hlpuart1.FifoMode = UART_FIFOMODE_DISABLE;
  259.   if (HAL_UART_Init(&hlpuart1) != HAL_OK)
  260.   {
  261.     Error_Handler();
  262.   }
  263.   if (HAL_UARTEx_SetTxFifoThreshold(&hlpuart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
  264.   {
  265.     Error_Handler();
  266.   }
  267.   if (HAL_UARTEx_SetRxFifoThreshold(&hlpuart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
  268.   {
  269.     Error_Handler();
  270.   }
  271.   if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
  272.   {
  273.     Error_Handler();
  274.   }
  275.   /* USER CODE BEGIN LPUART1_Init 2 */
  276.  
  277.   /* USER CODE END LPUART1_Init 2 */
  278.  
  279. }
  280.  
  281. /**
  282.   * @brief RTC Initialization Function
  283.   * @param None
  284.   * @retval None
  285.   */
  286. static void MX_RTC_Init(void)
  287. {
  288.  
  289.   /* USER CODE BEGIN RTC_Init 0 */
  290.  
  291.   /* USER CODE END RTC_Init 0 */
  292.  
  293.   RTC_TimeTypeDef sTime = {0};
  294.   RTC_DateTypeDef sDate = {0};
  295.   RTC_AlarmTypeDef sAlarm = {0};
  296.  
  297.   /* USER CODE BEGIN RTC_Init 1 */
  298.  
  299.   /* USER CODE END RTC_Init 1 */
  300.   /** Initialize RTC Only
  301.   */
  302.   hrtc.Instance = RTC;
  303.   hrtc.Init.HourFormat = RTC_HOURFORMAT_12;
  304.   hrtc.Init.AsynchPrediv = 127;
  305.   hrtc.Init.SynchPrediv = 255;
  306.   hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
  307.   hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
  308.   hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  309.   hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  310.   if (HAL_RTC_Init(&hrtc) != HAL_OK)
  311.   {
  312.     Error_Handler();
  313.   }
  314.  
  315.   /* USER CODE BEGIN Check_RTC_BKUP */
  316.    
  317.   /* USER CODE END Check_RTC_BKUP */
  318.  
  319.   /** Initialize RTC and set the Time and Date
  320.   */
  321.   sTime.Hours = 2;
  322.   sTime.Minutes = 29;
  323.   sTime.Seconds = 0;
  324.   sTime.TimeFormat = RTC_HOURFORMAT12_PM;
  325.   sTime.DayLightSaving = RTC_DAYLIGHTSAVING_ADD1H;
  326.   sTime.StoreOperation = RTC_STOREOPERATION_RESET;
  327.   if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) != HAL_OK)
  328.   {
  329.     Error_Handler();
  330.   }
  331.   sDate.WeekDay = RTC_WEEKDAY_MONDAY;
  332.   sDate.Month = RTC_MONTH_MAY;
  333.   sDate.Date = 6;
  334.   sDate.Year = 20;
  335.  
  336.   if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN) != HAL_OK)
  337.   {
  338.     Error_Handler();
  339.   }
  340.   /** Enable the Alarm A
  341.   */
  342.   sAlarm.AlarmTime.Hours = 1;
  343.   sAlarm.AlarmTime.Minutes = 0;
  344.   sAlarm.AlarmTime.Seconds = 30;
  345.   sAlarm.AlarmTime.SubSeconds = 0;
  346.   sAlarm.AlarmTime.TimeFormat = RTC_HOURFORMAT12_PM;
  347.   sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_ADD1H;
  348.   sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
  349.   sAlarm.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY|RTC_ALARMMASK_HOURS
  350.                               |RTC_ALARMMASK_MINUTES;
  351.   sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL;
  352.   sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE;
  353.   sAlarm.AlarmDateWeekDay = 1;
  354.   sAlarm.Alarm = RTC_ALARM_A;
  355.   if (HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BIN) != HAL_OK)
  356.   {
  357.     Error_Handler();
  358.   }
  359.   /* USER CODE BEGIN RTC_Init 2 */
  360.  
  361.   /* USER CODE END RTC_Init 2 */
  362.  
  363. }
  364.  
  365. /**
  366.   * @brief GPIO Initialization Function
  367.   * @param None
  368.   * @retval None
  369.   */
  370. static void MX_GPIO_Init(void)
  371. {
  372.   GPIO_InitTypeDef GPIO_InitStruct = {0};
  373.  
  374.   /* GPIO Ports Clock Enable */
  375.   __HAL_RCC_GPIOC_CLK_ENABLE();
  376.   __HAL_RCC_GPIOH_CLK_ENABLE();
  377.   __HAL_RCC_GPIOA_CLK_ENABLE();
  378.  
  379.   /*Configure GPIO pin Output Level */
  380.   HAL_GPIO_WritePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin, GPIO_PIN_RESET);
  381.  
  382.   /*Configure GPIO pin : LED_GREEN_Pin */
  383.   GPIO_InitStruct.Pin = LED_GREEN_Pin;
  384.   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  385.   GPIO_InitStruct.Pull = GPIO_NOPULL;
  386.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  387.   HAL_GPIO_Init(LED_GREEN_GPIO_Port, &GPIO_InitStruct);
  388.  
  389. }
  390.  
  391. /* USER CODE BEGIN 4 */
  392.  
  393. /* USER CODE END 4 */
  394.  
  395. /**
  396.   * @brief  This function is executed in case of error occurrence.
  397.   * @retval None
  398.   */
  399. void Error_Handler(void)
  400. {
  401.   /* USER CODE BEGIN Error_Handler_Debug */
  402.   /* User can add his own implementation to report the HAL error return state */
  403.  
  404.   /* USER CODE END Error_Handler_Debug */
  405. }
  406.  
  407. #ifdef  USE_FULL_ASSERT
  408. /**
  409.   * @brief  Reports the name of the source file and the source line number
  410.   *         where the assert_param error has occurred.
  411.   * @param  file: pointer to the source file name
  412.   * @param  line: assert_param error line source number
  413.   * @retval None
  414.   */
  415. void assert_failed(uint8_t *file, uint32_t line)
  416. {
  417.   /* USER CODE BEGIN 6 */
  418.   /* User can add his own implementation to report the file name and line number,
  419.      tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  420.   /* USER CODE END 6 */
  421. }
  422. #endif /* USE_FULL_ASSERT */
  423.  
  424. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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