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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. const char* sleep_string = "going to sleep!\r\n";
  51. const char* awake_string = "I'm awake!!\r\n";
  52. /* USER CODE END PV */
  53.  
  54. /* Private function prototypes -----------------------------------------------*/
  55. void SystemClock_Config(void);
  56. static void MX_GPIO_Init(void);
  57. static void MX_RTC_Init(void);
  58. static void MX_LPUART1_UART_Init(void);
  59. /* USER CODE BEGIN PFP */
  60. static void SYSCLKConfig_STOP(void);
  61. /* USER CODE END PFP */
  62.  
  63. /* Private user code ---------------------------------------------------------*/
  64. /* USER CODE BEGIN 0 */
  65. void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc){
  66.   RTC_TimeTypeDef myTime = {0};
  67.   RTC_DateTypeDef myDate = {0};
  68.  
  69.   HAL_RTC_GetTime(hrtc, &myTime, RTC_FORMAT_BIN);
  70.   HAL_RTC_GetDate(hrtc, &myDate, RTC_FORMAT_BIN);
  71. }
  72. /* USER CODE END 0 */
  73.  
  74. /**
  75.   * @brief  The application entry point.
  76.   * @retval int
  77.   */
  78. int main(void)
  79. {
  80.   /* USER CODE BEGIN 1 */
  81.   volatile GPIO_InitTypeDef GPIO_InitStructure;
  82.   /* USER CODE END 1 */
  83.  
  84.   /* MCU Configuration--------------------------------------------------------*/
  85.  
  86.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  87.   HAL_Init();
  88.  
  89.   /* USER CODE BEGIN Init */
  90.  
  91.   /* USER CODE END Init */
  92.  
  93.   /* Configure the system clock */
  94.   SystemClock_Config();
  95.  
  96.   /* USER CODE BEGIN SysInit */
  97.   //__HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_MSI);
  98.   /* USER CODE END SysInit */
  99.  
  100.   /* Initialize all configured peripherals */
  101.   MX_GPIO_Init();
  102.   MX_RTC_Init();
  103.   MX_LPUART1_UART_Init();
  104.   /* USER CODE BEGIN 2 */
  105. //  uint32_t* theACTLR = (uint32_t*) 0xE000E008;
  106. //  *theACTLR |= 0x01;
  107.   /* USER CODE END 2 */
  108.  
  109.   /* Infinite loop */
  110.   /* USER CODE BEGIN WHILE */
  111.   while (1)
  112.   {
  113.     //HAL_GPIO_TogglePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin);
  114.  
  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.     HAL_UART_DeInit(&hlpuart1);
  119.  
  120.     /* Configure all GPIO port pins in Analog Input mode (floating input trigger OFF) */
  121.     /* Note: Debug using ST-Link is not possible during the execution of this   */
  122.     /*       example because communication between ST-link and the device       */
  123.     /*       under test is done through UART. All GPIO pins are disabled (set   */
  124.     /*       to analog input mode) including  UART I/O pins.           */
  125.     GPIO_InitStructure.Pin = GPIO_PIN_All;
  126.     GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
  127.     GPIO_InitStructure.Pull = GPIO_NOPULL;
  128.  
  129.  
  130.  
  131.     //HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
  132.     HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
  133.     //HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
  134.     HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
  135.     HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);
  136.     HAL_GPIO_Init(GPIOF, &GPIO_InitStructure);
  137.     HAL_GPIO_Init(GPIOG, &GPIO_InitStructure);
  138.     //HAL_GPIO_Init(GPIOH, &GPIO_InitStructure);
  139.     HAL_GPIO_Init(GPIOI, &GPIO_InitStructure);
  140.  
  141.  
  142.  
  143. //    /* Disable GPIOs clock */
  144. //    __HAL_RCC_GPIOA_CLK_DISABLE();
  145. //    __HAL_RCC_GPIOB_CLK_DISABLE();
  146. //    __HAL_RCC_GPIOC_CLK_DISABLE();
  147. //    __HAL_RCC_GPIOD_CLK_DISABLE();
  148. //    __HAL_RCC_GPIOE_CLK_DISABLE();
  149. //    __HAL_RCC_GPIOF_CLK_DISABLE();
  150. //    __HAL_RCC_GPIOG_CLK_DISABLE();
  151. //    __HAL_RCC_GPIOH_CLK_DISABLE();
  152. //    __HAL_RCC_GPIOI_CLK_DISABLE();
  153.  
  154.     HAL_UARTEx_EnableStopMode(&hlpuart1);
  155.     HAL_SuspendTick();
  156.  
  157.     /* Enter STOP 2 mode */
  158.     HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
  159.  
  160.     /* ... STOP2 mode ... */
  161.  
  162.     /* Re-configure the system clock to 120 MHz based on MSI, enable and
  163.        select PLL as system clock source (PLL is disabled in STOP mode) */
  164.     //SYSCLKConfig_STOP();
  165.     FLASH_FlushCaches();
  166.  
  167.     SystemClock_Config();
  168.  
  169.     HAL_ResumeTick();
  170.  
  171.     MX_GPIO_Init();
  172.  
  173.     HAL_GPIO_WritePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin, GPIO_PIN_RESET);
  174.  
  175.     //HAL_UART_MspInit(&hlpuart1);
  176.  
  177.     MX_LPUART1_UART_Init();
  178.  
  179.     HAL_UART_Transmit(&hlpuart1, (uint8_t*)awake_string, strlen(awake_string), 2000);
  180.  
  181.     HAL_Delay(5000);
  182.     /* USER CODE END WHILE */
  183.  
  184.     /* USER CODE BEGIN 3 */
  185.   }
  186.   /* USER CODE END 3 */
  187. }
  188.  
  189. /**
  190.   * @brief System Clock Configuration
  191.   * @retval None
  192.   */
  193. void SystemClock_Config(void)
  194. {
  195.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  196.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  197.   RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  198.  
  199.   /** Configure the main internal regulator output voltage
  200.   */
  201.   if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST) != HAL_OK)
  202.   {
  203.     Error_Handler();
  204.   }
  205.   /** Configure LSE Drive Capability
  206.   */
  207.   HAL_PWR_EnableBkUpAccess();
  208.   __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
  209.   /** Initializes the CPU, AHB and APB busses clocks
  210.   */
  211.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE|RCC_OSCILLATORTYPE_MSI;
  212.   RCC_OscInitStruct.LSEState = RCC_LSE_ON;
  213.   RCC_OscInitStruct.MSIState = RCC_MSI_ON;
  214.   RCC_OscInitStruct.MSICalibrationValue = 0;
  215.   RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;
  216.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  217.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
  218.   RCC_OscInitStruct.PLL.PLLM = 1;
  219.   RCC_OscInitStruct.PLL.PLLN = 60;
  220.   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  221.   RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
  222.   RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
  223.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  224.   {
  225.     Error_Handler();
  226.   }
  227.   /** Initializes the CPU, AHB and APB busses clocks
  228.   */
  229.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  230.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  231.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  232.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  233.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  234.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  235.  
  236.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  237.   {
  238.     Error_Handler();
  239.   }
  240.   PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_LPUART1;
  241.   PeriphClkInit.Lpuart1ClockSelection = RCC_LPUART1CLKSOURCE_LSE;
  242.   PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
  243.   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  244.   {
  245.     Error_Handler();
  246.   }
  247. }
  248.  
  249. /**
  250.   * @brief LPUART1 Initialization Function
  251.   * @param None
  252.   * @retval None
  253.   */
  254. static void MX_LPUART1_UART_Init(void)
  255. {
  256.  
  257.   /* USER CODE BEGIN LPUART1_Init 0 */
  258.  
  259.   /* USER CODE END LPUART1_Init 0 */
  260.  
  261.   /* USER CODE BEGIN LPUART1_Init 1 */
  262.  
  263.   /* USER CODE END LPUART1_Init 1 */
  264.   hlpuart1.Instance = LPUART1;
  265.   hlpuart1.Init.BaudRate = 9600;
  266.   hlpuart1.Init.WordLength = UART_WORDLENGTH_8B;
  267.   hlpuart1.Init.StopBits = UART_STOPBITS_1;
  268.   hlpuart1.Init.Parity = UART_PARITY_NONE;
  269.   hlpuart1.Init.Mode = UART_MODE_TX_RX;
  270.   hlpuart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  271.   hlpuart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  272.   hlpuart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
  273.   hlpuart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  274.   hlpuart1.FifoMode = UART_FIFOMODE_DISABLE;
  275.   if (HAL_UART_Init(&hlpuart1) != HAL_OK)
  276.   {
  277.     Error_Handler();
  278.   }
  279.   if (HAL_UARTEx_SetTxFifoThreshold(&hlpuart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
  280.   {
  281.     Error_Handler();
  282.   }
  283.   if (HAL_UARTEx_SetRxFifoThreshold(&hlpuart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
  284.   {
  285.     Error_Handler();
  286.   }
  287.   if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
  288.   {
  289.     Error_Handler();
  290.   }
  291.   /* USER CODE BEGIN LPUART1_Init 2 */
  292.  
  293.   /* USER CODE END LPUART1_Init 2 */
  294.  
  295. }
  296.  
  297. /**
  298.   * @brief RTC Initialization Function
  299.   * @param None
  300.   * @retval None
  301.   */
  302. static void MX_RTC_Init(void)
  303. {
  304.  
  305.   /* USER CODE BEGIN RTC_Init 0 */
  306.  
  307.   /* USER CODE END RTC_Init 0 */
  308.  
  309.   RTC_TimeTypeDef sTime = {0};
  310.   RTC_DateTypeDef sDate = {0};
  311.   RTC_AlarmTypeDef sAlarm = {0};
  312.  
  313.   /* USER CODE BEGIN RTC_Init 1 */
  314.  
  315.   /* USER CODE END RTC_Init 1 */
  316.   /** Initialize RTC Only
  317.   */
  318.   hrtc.Instance = RTC;
  319.   hrtc.Init.HourFormat = RTC_HOURFORMAT_12;
  320.   hrtc.Init.AsynchPrediv = 127;
  321.   hrtc.Init.SynchPrediv = 255;
  322.   hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
  323.   hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
  324.   hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  325.   hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  326.   if (HAL_RTC_Init(&hrtc) != HAL_OK)
  327.   {
  328.     Error_Handler();
  329.   }
  330.  
  331.   /* USER CODE BEGIN Check_RTC_BKUP */
  332.    
  333.   /* USER CODE END Check_RTC_BKUP */
  334.  
  335.   /** Initialize RTC and set the Time and Date
  336.   */
  337.   sTime.Hours = 2;
  338.   sTime.Minutes = 29;
  339.   sTime.Seconds = 0;
  340.   sTime.TimeFormat = RTC_HOURFORMAT12_PM;
  341.   sTime.DayLightSaving = RTC_DAYLIGHTSAVING_ADD1H;
  342.   sTime.StoreOperation = RTC_STOREOPERATION_RESET;
  343.   if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) != HAL_OK)
  344.   {
  345.     Error_Handler();
  346.   }
  347.   sDate.WeekDay = RTC_WEEKDAY_MONDAY;
  348.   sDate.Month = RTC_MONTH_MAY;
  349.   sDate.Date = 6;
  350.   sDate.Year = 20;
  351.  
  352.   if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN) != HAL_OK)
  353.   {
  354.     Error_Handler();
  355.   }
  356.   /** Enable the Alarm A
  357.   */
  358.   sAlarm.AlarmTime.Hours = 1;
  359.   sAlarm.AlarmTime.Minutes = 0;
  360.   sAlarm.AlarmTime.Seconds = 10;
  361.   sAlarm.AlarmTime.SubSeconds = 0;
  362.   sAlarm.AlarmTime.TimeFormat = RTC_HOURFORMAT12_PM;
  363.   sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_ADD1H;
  364.   sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
  365.   sAlarm.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY|RTC_ALARMMASK_HOURS
  366.                               |RTC_ALARMMASK_MINUTES;
  367.   sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL;
  368.   sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE;
  369.   sAlarm.AlarmDateWeekDay = 1;
  370.   sAlarm.Alarm = RTC_ALARM_A;
  371.   if (HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BIN) != HAL_OK)
  372.   {
  373.     Error_Handler();
  374.   }
  375.   /* USER CODE BEGIN RTC_Init 2 */
  376.  
  377.   /* USER CODE END RTC_Init 2 */
  378.  
  379. }
  380.  
  381. /**
  382.   * @brief GPIO Initialization Function
  383.   * @param None
  384.   * @retval None
  385.   */
  386. static void MX_GPIO_Init(void)
  387. {
  388.   GPIO_InitTypeDef GPIO_InitStruct = {0};
  389.  
  390.   /* GPIO Ports Clock Enable */
  391.   __HAL_RCC_GPIOC_CLK_ENABLE();
  392.   __HAL_RCC_GPIOH_CLK_ENABLE();
  393.   __HAL_RCC_GPIOA_CLK_ENABLE();
  394.  
  395.   /*Configure GPIO pin Output Level */
  396.   HAL_GPIO_WritePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin, GPIO_PIN_RESET);
  397.  
  398.   /*Configure GPIO pin : LED_GREEN_Pin */
  399.   GPIO_InitStruct.Pin = LED_GREEN_Pin;
  400.   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  401.   GPIO_InitStruct.Pull = GPIO_NOPULL;
  402.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  403.   HAL_GPIO_Init(LED_GREEN_GPIO_Port, &GPIO_InitStruct);
  404.  
  405. }
  406.  
  407. /* USER CODE BEGIN 4 */
  408.  
  409. /**
  410.   * @brief  Configures system clock after wake-up from STOP: enable MSI, PLL
  411.   *         and select PLL as system clock source.
  412.   * @param  None
  413.   * @retval None
  414.   */
  415. static void SYSCLKConfig_STOP(void)
  416. {
  417.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  418.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  419.   uint32_t pFLatency = 0;
  420.  
  421.   /* Enable Power Control clock */
  422.   __HAL_RCC_PWR_CLK_ENABLE();
  423.  
  424.   /* Get the Oscillators configuration according to the internal RCC registers */
  425.   HAL_RCC_GetOscConfig(&RCC_OscInitStruct);
  426.  
  427.   /* Enable PLL */
  428.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_NONE;
  429.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  430.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  431.   {
  432.     Error_Handler();
  433.   }
  434.  
  435.   /* Get the Clocks configuration according to the internal RCC registers */
  436.   HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &pFLatency);
  437.  
  438.   /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
  439.      clocks dividers */
  440.   RCC_ClkInitStruct.ClockType     = RCC_CLOCKTYPE_SYSCLK;
  441.   RCC_ClkInitStruct.SYSCLKSource  = RCC_SYSCLKSOURCE_PLLCLK;
  442.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, pFLatency) != HAL_OK)
  443.   {
  444.     Error_Handler();
  445.   }
  446. }
  447.  
  448.  
  449.  
  450. /* USER CODE END 4 */
  451.  
  452. /**
  453.   * @brief  This function is executed in case of error occurrence.
  454.   * @retval None
  455.   */
  456. void Error_Handler(void)
  457. {
  458.   /* USER CODE BEGIN Error_Handler_Debug */
  459.   /* User can add his own implementation to report the HAL error return state */
  460.  
  461.   /* USER CODE END Error_Handler_Debug */
  462. }
  463.  
  464. #ifdef  USE_FULL_ASSERT
  465. /**
  466.   * @brief  Reports the name of the source file and the source line number
  467.   *         where the assert_param error has occurred.
  468.   * @param  file: pointer to the source file name
  469.   * @param  line: assert_param error line source number
  470.   * @retval None
  471.   */
  472. void assert_failed(uint8_t *file, uint32_t line)
  473. {
  474.   /* USER CODE BEGIN 6 */
  475.   /* User can add his own implementation to report the file name and line number,
  476.      tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  477.   /* USER CODE END 6 */
  478. }
  479. #endif /* USE_FULL_ASSERT */
  480.  
  481. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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