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- /* USER CODE BEGIN Header */
- /**
- ******************************************************************************
- * @file : main.c
- * @brief : Main program body
- ******************************************************************************
- * @attention
- *
- * <h2><center>© Copyright (c) 2021 STMicroelectronics.
- * All rights reserved.</center></h2>
- *
- * This software component is licensed by ST under BSD 3-Clause license,
- * the "License"; You may not use this file except in compliance with the
- * License. You may obtain a copy of the License at:
- * opensource.org/licenses/BSD-3-Clause
- *
- ******************************************************************************
- */
- /* USER CODE END Header */
- /* Includes ------------------------------------------------------------------*/
- #include "main.h"
- #include "math.h"
- #include "stdbool.h"
-
- /* Private includes ----------------------------------------------------------*/
- /* USER CODE BEGIN Includes */
-
- /* USER CODE END Includes */
-
- /* Private typedef -----------------------------------------------------------*/
- /* USER CODE BEGIN PTD */
-
- /* USER CODE END PTD */
-
- /* Private define ------------------------------------------------------------*/
- /* USER CODE BEGIN PD */
-
- /* USER CODE END PD */
-
- /* Private macro -------------------------------------------------------------*/
- /* USER CODE BEGIN PM */
-
- /* USER CODE END PM */
-
- /* Private variables ---------------------------------------------------------*/
- RTC_HandleTypeDef hrtc;
- UART_HandleTypeDef huart2;
- RTC_TimeTypeDef sTime;
- RTC_DateTypeDef sDate;
- RTC_AlarmTypeDef sAlarm;
-
- //Nuernberg coordinates
- int latitude_nbg = 49;
- int longitude_nbg = 11;
-
- //German UTC time,summer (+2) and winter (+1)
- int UTC_DER_sum = 2;
- int UTC_DER_win = 1;
- bool winterTime = true;
-
- /* USER CODE BEGIN PV */
-
- /* USER CODE END PV */
-
- /* Private function prototypes -----------------------------------------------*/
- void SystemClock_Config(void);
- static void MX_GPIO_Init(void);
- static void MX_USART2_UART_Init(void);
- static void MX_RTC_Init(void);
- /* USER CODE BEGIN PFP */
-
- /* USER CODE END PFP */
-
- /* Private user code ---------------------------------------------------------*/
- /* USER CODE BEGIN 0 */
- /*******************************************************************************
- * Function Name : deg_to_rad
- * Description : converts degrees to radians
- * Return : angle in radians
- *******************************************************************************/
- double deg_to_rad(double deg)
- {
- double rad = deg*(M_PI/180);
- return rad;
- }
-
- /*******************************************************************************
- * Function Name : rad_to_deg
- * Description : converts radians to degrees
- * Return : angle in degrees
- *******************************************************************************/
- double rad_to_deg(double rad)
- {
- double deg = rad*(180/M_PI);
- return deg;
- }
-
- /*******************************************************************************
- * Function Name : leap_year_check
- * Description : checks if year is a leap year
- * Return : false: no leap year, true: leap year
- *******************************************************************************/
- int leap_year_check(int year)
- {
- if((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
- {
- return true;
- }
- return false;
- }
-
- /*******************************************************************************
- * Function Name : calc_day_of_year
- * Description : calculates the day of year
- * Return : day of year (1.1.. = 1, 2.1.. = 2,...)
- * Source : https://overiq.com/c-examples/c-program-to-calculate-the-day-of-year-from-the-date/
- *******************************************************************************/
- int calc_day_of_year(int day, int mon, int year)
- {
- int days_in_feb = 28;
- int doy = day; //day of year
-
- // check for leap year
- bool leap_year = leap_year_check(year);
- if(leap_year == true)
- {
- days_in_feb = 29;
- }
-
- switch(mon)
- {
- case 2:
- doy += 31;
- break;
- case 3:
- doy += 31+days_in_feb;
- break;
- case 4:
- doy += days_in_feb+62;
- break;
- case 5:
- doy += days_in_feb+92;
- break;
- case 6:
- doy += days_in_feb+123;
- break;
- case 7:
- doy += days_in_feb+153;
- break;
- case 8:
- doy += days_in_feb+184;
- break;
- case 9:
- doy += days_in_feb+215;
- break;
- case 10:
- doy += days_in_feb+245;
- break;
- case 11:
- doy += days_in_feb+276;
- break;
- case 12:
- doy += days_in_feb+306;
- break;
- }
- return doy;
- }
-
- /*******************************************************************************
- * Function Name : calc_sunrise_sunset
- * Description : calculates the sunrise and sunset time of a specific date
- * Source : General Solar Position Calculations, NOAA Global Monitoring Division
- *******************************************************************************/
- void calc_sunrise_sunset(int date, int month, int year, int sunrise_time[2], int sunset_time[2])
- {
- double gamma = 0;
- bool leap_year;
- double eqtime = 0;
- double decl = 0;
- double decl_deg = 0;
- double zenith_sun = 0;
- double lat_nbg_rad = 0;
- double ha = 0;
- double sunrise = 0;
- double sunset = 0;
- double ha_deg = 0;
- int sunrise_h = 0;
- int sunset_h = 0;
- double sunrise_min = 0;
- double sunset_min = 0;
- int int_sunrise_min = 0;
- int int_sunset_min = 0;
-
- //day of year calculation
- int day_of_year = calc_day_of_year(date, month, year);
-
- // fractional year (γ) in radians
- // check for leap year
- leap_year = leap_year_check(year);
- if(leap_year == false)
- {
- //The back part of the formula was omitted, because there is no difference in the result
- gamma = ((2 * M_PI)/365)*(day_of_year - 1);
- } else {
- //The back part of the formula was omitted, because there is no difference in the result
- gamma = ((2 * M_PI)/366)*(day_of_year - 1);
- }
-
- //Equation of time in minutes
- eqtime = 229.18*(0.000075 + 0.001868*cos(gamma) - 0.032077*sin(gamma) - 0.014615*cos(2*gamma) - 0.040849*sin(2*gamma));
-
- //Solar declination angle in radians
- decl = 0.006918 - 0.399912*cos(gamma) + 0.070257*sin(gamma) - 0.006758*cos(2*gamma) + 0.000907*sin(2*gamma) - 0.002697*cos(3*gamma) + 0.00148*sin(3*gamma);
-
- //Solar declination angle in degrees
- decl_deg = rad_to_deg(decl);
-
- //Hour angle in degrees, positive number corresponds to sunrise, negative to sunset
- //special case of sunrise or sunset, the zenith is set to 90.833Deg
- zenith_sun = deg_to_rad(90.833);
- //Latitude of Nuernberg in rad
- lat_nbg_rad = deg_to_rad(latitude_nbg);
- ha = acos((cos(zenith_sun)/(cos(lat_nbg_rad)*cos(decl)))-(tan(lat_nbg_rad)*tan(decl)));
- ha_deg = rad_to_deg(ha);
-
- //UTC time of sunrise (or sunset) in minutes
- sunrise = (720-4*(longitude_nbg+ha_deg)-eqtime);
- sunset = 720-4*(longitude_nbg-ha_deg)-eqtime;
-
- //Convert sunrise (or sunset) UTC time in hours
- sunrise = sunrise/60;
- sunset = sunset/60;
-
- //Seperate hours and minutes
- sunrise_h = floor(sunrise);
- sunrise_min = sunrise - sunrise_h;
- //Cut off after two decimal places
- int_sunrise_min = floor(sunrise_min * 100.0);
- if (int_sunrise_min >= 60)
- {
- sunrise_h = sunrise_h + 1;
- int_sunrise_min = int_sunrise_min - 60;
- }
- sunset_h = floor(sunset);
- sunset_min = sunset - sunset_h;
- //Cut off after two decimal places
- int_sunset_min = floor(sunset_min * 100.0);
- if (int_sunset_min >= 60)
- {
- sunset_h = sunset_h + 1;
- int_sunset_min = int_sunset_min - 60;
- }
-
- //Add time difference from German time to UTC Time
- //Private variable winterTime must be initialized accordingly
- if (winterTime)
- {
- sunrise_h = sunrise_h + UTC_DER_win;
- sunset_h = sunset_h + UTC_DER_win;
- } else {
- sunrise_h = sunrise_h + UTC_DER_sum;
- sunset_h = sunset_h + UTC_DER_sum;
- }
-
- sunrise_time[0] = sunrise_h;
- sunrise_time[1] = int_sunrise_min;
- sunset_time[0] = sunset_h;
- sunset_time[1] = int_sunset_min;
- }
-
- /*******************************************************************************
- * Function Name : calc_tomorrows_date
- * Description : calculates tomorrow's date
- * Source : https://github.com/vyacht/stm32/blob/master/vynmea/rtc.c
- *******************************************************************************/
- void calc_tomorrows_date(int day, int wday, int month, int year, int DaysInMonth[12], int tomorrows_date[4])
- {
- bool leap_year;
-
- day++; // next day
- wday++; // next weekday
- if(wday == 8)
- {
- wday = 1; // Monday
- }
- if(day > DaysInMonth[month-1])
- { // next month
- day = 1;
- month++;
- }
- if(day > 31 && month == 12) // next year
- {
- day = 1;
- month = 1;
- year++;
- }
-
- tomorrows_date[0] = day;
- tomorrows_date[1] = wday;
- tomorrows_date[2] = month;
- tomorrows_date[3] = year;
-
- }
-
- /*******************************************************************************
- * Function Name : set_Alarm
- * Description : sets the wake up Alarm
- *******************************************************************************/
- void set_Alarm(int h, int min, int weekDay)
- {
- /** Enable the Alarm A*/
- sAlarm.AlarmTime.Hours = h;
- sAlarm.AlarmTime.Minutes = min;
- sAlarm.AlarmTime.Seconds = 0;
- sAlarm.AlarmTime.SubSeconds = 0;
- sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
- sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
- sAlarm.AlarmMask = RTC_ALARMMASK_NONE; //only by specific time
- sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL;
- sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;
- sAlarm.AlarmDateWeekDay = weekDay;
- sAlarm.Alarm = RTC_ALARM_A;
- if (HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BIN) != HAL_OK)
- {
- Error_Handler();
- }
- }
-
- // sending to UART
- void transmit_uart(char *string){
- uint8_t len = strlen(string);
- HAL_UART_Transmit(&huart2, (uint8_t*) string, len, 200);
- }
-
-
- /* USER CODE END 0 */
-
- /**
- * @brief The application entry point.
- * @retval int
- */
- 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_USART2_UART_Init();
- MX_RTC_Init();
- /* USER CODE BEGIN 2 */
- int hours = 0;
- int minutes = 0;
- int seconds = 0;
- int weekDay = 0;
- int month = 0;
- int date = 0;
- int year = 0;
-
- int sunrise_h = 0;
- int sunset_h = 0;
- int int_sunrise_min = 0;
- int int_sunset_min = 0;
- int sunrise_time[2] = {0};
- int sunset_time[2] = {0};
- int tomorrows_date[4] = {0};
- int DaysInMonth[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
- int DaysInMonthLeapYear[12] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
- bool leap_year = false;
-
-
-
- /* USER CODE END 2 */
-
- /* Infinite loop */
- /* USER CODE BEGIN WHILE */
- while (1)
- {
-
- //Get Time and Date
- if (HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN) == HAL_OK)
- {
- hours = sTime.Hours;
- minutes = sTime.Minutes;
- seconds = sTime.Seconds;
- }
- if (HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN) == HAL_OK)
- {
- weekDay = sDate.WeekDay;
- month = sDate.Month;
- date = sDate.Date;
- year = 2000 + sDate.Year;
- }
-
- // check for leap year
- leap_year = leap_year_check(year);
- if (leap_year)
- {
- //Calculate tomorrow's date
- calc_tomorrows_date(date, weekDay, month, year, DaysInMonthLeapYear, tomorrows_date);
- } else {
- //Calculate tomorrow's date
- calc_tomorrows_date(date, weekDay, month, year, DaysInMonth, tomorrows_date);
- }
-
- //Calculate sunrise and sunset time for tomorrow
- calc_sunrise_sunset(tomorrows_date[0], tomorrows_date[2], tomorrows_date[3], sunrise_time, sunset_time);
-
- set_Alarm(16, 22, 1);
-
- HAL_Delay(5000);
-
- transmit_uart("Ich gehe schlafen!\r\n");
-
- // Suspend Tick increment to prevent wake up by Systick interrupt
- HAL_SuspendTick();
-
- HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI); //Interrupt for wake up
-
- HAL_ResumeTick();
-
- transmit_uart("Bin wieder wach!\r\n");
- }
- /* USER CODE END 3 */
- }
-
- /**
- * @brief System Clock Configuration
- * @retval None
- */
- void SystemClock_Config(void)
- {
- RCC_OscInitTypeDef RCC_OscInitStruct = {0};
- RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
- RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
-
- /** Configure the main internal regulator output voltage
- */
- __HAL_RCC_PWR_CLK_ENABLE();
- __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
- /** Initializes the RCC Oscillators according to the specified parameters
- * in the RCC_OscInitTypeDef structure.
- */
- RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
- RCC_OscInitStruct.HSIState = RCC_HSI_ON;
- RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
- RCC_OscInitStruct.LSIState = RCC_LSI_ON;
- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
- RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
- RCC_OscInitStruct.PLL.PLLM = 16;
- RCC_OscInitStruct.PLL.PLLN = 336;
- RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
- RCC_OscInitStruct.PLL.PLLQ = 7;
- if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
- {
- Error_Handler();
- }
- /** Initializes the CPU, AHB and APB buses 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_DIV2;
- RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
-
- if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
- {
- Error_Handler();
- }
- PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
- PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
- if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
- {
- Error_Handler();
- }
- }
-
- /**
- * @brief RTC Initialization Function
- * @param None
- * @retval None
- */
- static void MX_RTC_Init(void)
- {
-
- /* USER CODE BEGIN RTC_Init 0 */
-
- /* USER CODE END RTC_Init 0 */
-
- /* USER CODE BEGIN RTC_Init 1 */
-
- /* USER CODE END RTC_Init 1 */
- /** Initialize RTC Only
- */
- hrtc.Instance = RTC;
- hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
- hrtc.Init.AsynchPrediv = 127;
- hrtc.Init.SynchPrediv = 255;
- hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
- hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
- hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
- if (HAL_RTC_Init(&hrtc) != HAL_OK)
- {
- Error_Handler();
- }
-
- /* USER CODE BEGIN Check_RTC_BKUP */
-
- /* USER CODE END Check_RTC_BKUP */
-
- /** Initialize RTC and set the Time and Date
- */
- sTime.Hours = 16;
- sTime.Minutes = 20;
- sTime.Seconds = 30;
- sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
- sTime.StoreOperation = RTC_STOREOPERATION_RESET;
- if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) != HAL_OK)
- {
- Error_Handler();
- }
- sDate.WeekDay = RTC_WEEKDAY_MONDAY;
- sDate.Month = RTC_MONTH_JANUARY;
- sDate.Date = 11;
- sDate.Year = 21;
-
- if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN) != HAL_OK)
- {
- Error_Handler();
- }
-
- /* USER CODE BEGIN RTC_Init 2 */
-
- /* USER CODE END RTC_Init 2 */
-
- }
-
- /**
- * @brief USART2 Initialization Function
- * @param None
- * @retval None
- */
- static void MX_USART2_UART_Init(void)
- {
-
- /* USER CODE BEGIN USART2_Init 0 */
-
- /* USER CODE END USART2_Init 0 */
-
- /* USER CODE BEGIN USART2_Init 1 */
-
- /* USER CODE END USART2_Init 1 */
- huart2.Instance = USART2;
- huart2.Init.BaudRate = 115200;
- huart2.Init.WordLength = UART_WORDLENGTH_8B;
- huart2.Init.StopBits = UART_STOPBITS_1;
- huart2.Init.Parity = UART_PARITY_NONE;
- huart2.Init.Mode = UART_MODE_TX_RX;
- huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
- huart2.Init.OverSampling = UART_OVERSAMPLING_16;
- if (HAL_UART_Init(&huart2) != HAL_OK)
- {
- Error_Handler();
- }
- /* USER CODE BEGIN USART2_Init 2 */
-
- /* USER CODE END USART2_Init 2 */
-
- }
-
- /**
- * @brief GPIO Initialization Function
- * @param None
- * @retval None
- */
- static void MX_GPIO_Init(void)
- {
- GPIO_InitTypeDef GPIO_InitStruct = {0};
-
- /* GPIO Ports Clock Enable */
- __HAL_RCC_GPIOC_CLK_ENABLE();
- __HAL_RCC_GPIOH_CLK_ENABLE();
- __HAL_RCC_GPIOA_CLK_ENABLE();
- __HAL_RCC_GPIOB_CLK_ENABLE();
-
- /*Configure GPIO pin Output Level */
- HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
-
- /*Configure GPIO pin : B1_Pin */
- GPIO_InitStruct.Pin = B1_Pin;
- GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
- GPIO_InitStruct.Pull = GPIO_NOPULL;
- HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);
-
- /*Configure GPIO pin : LD2_Pin */
- GPIO_InitStruct.Pin = LD2_Pin;
- GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
- GPIO_InitStruct.Pull = GPIO_NOPULL;
- GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
- HAL_GPIO_Init(LD2_GPIO_Port, &GPIO_InitStruct);
-
- }
-
- /* USER CODE BEGIN 4 */
-
- /* USER CODE END 4 */
-
- /**
- * @brief This function is executed in case of error occurrence.
- * @retval None
- */
- void Error_Handler(void)
- {
- /* USER CODE BEGIN Error_Handler_Debug */
- /* User can add his own implementation to report the HAL error return state */
- __disable_irq();
- while (1)
- {
- }
- /* USER CODE END Error_Handler_Debug */
- }
-
- /**
- * @brief Alarm callback
- * @param hrtc: RTC handle
- * @retval None
- */
- void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
- {
- /* Alarm generation */
- transmit_uart("Alarm!!!!\r\n");
- }
-
-
- #ifdef USE_FULL_ASSERT
- /**
- * @brief Reports the name of the source file and the source line number
- * where the assert_param error has occurred.
- * @param file: pointer to the source file name
- * @param line: assert_param error line source number
- * @retval None
- */
- void assert_failed(uint8_t *file, uint32_t line)
- {
- /* USER CODE BEGIN 6 */
- /* User can add his own implementation to report the file name and line number,
- ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
- /* USER CODE END 6 */
- }
- #endif /* USE_FULL_ASSERT */
-
- /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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