prettyprint

2020年10月28日 星期三

使用STM32F103C8T6 RTC 實作時鐘、鬧鐘

本實驗使用STM32F103C8T6 MCU來實作時鐘(含鬧鐘功能)，

使用元件：

  1. STM32F103C8T6 x1
  2. 按鈕 x3
  3. 1k電阻 x3
  4. OLED128x64   x1
  5. 蜂鳴器 x1
  6. 鈕扣電池 x1
功能需求:
  1. 可調整時間
  2. 設定鬧鐘
  3. 斷電VBAT供電
  4. 鬧鐘響起時按任何按鈕停止鬧鈴，響20秒未按按鈕，停止鬧鈴，5分鐘後再響鬧鈴，共三次。
  5. 2分鐘關螢幕進入STOP模式，按任一按鈕或鬧鈴響起喚醒。
在實作過程中遇到一些問題，例如無法進入STOP mode，在移除電源後，隔日復電日期未能自動更新等問題，可參閱另兩篇備忘文章
  1. https://rfwumcu.blogspot.com/2020/10/stm32-rtc.html
  2. https://rfwumcu.blogspot.com/2020/10/stm32-pwr-low-power-mode.html
實作過程：
一、線路圖


使用STM32CubeIDE開發環境與HAL library。

Timers分別使用RTC，TIM1，TIM2，TIM3。

RTC產稱每秒一次中斷(hrtc.Init.AsynchPrediv = RTC_AUTO_1_SECOND)計時更新顯示。
TIM1: 設定為base timer，計時2分鐘關閉螢幕，進入STOP Mode以節省電源。
TIM2:設定為base timer，作為Software Debounce用，按鈕按下後啟動50ms後中斷。
TIM3:設定為1Hz PWM，驅動鬧鈴蜂鳴器，鬧鐘鬧鈴響起後，未按取消鬧鈴，20秒後關閉鬧鈴，5分鐘後再響鬧鈴共3次。

  • RCC Clock configuration 




    RCC啟用LSE作為RTC Clock，周邊clock為HSI，當系統進入STOP Mode使用的Clock。
  • RTC設定參數
在Parameter選取Automatic Predivider Calculation Enable 以產生每秒一次中斷(RTC_AUTO_1_SECOND)。

在NVIC Enable RTC global interrupt 以便每秒產生一次中斷並呼叫
void HAL_RTCEx_RTCEventCallback(RTC_HandleTypeDef* hrtc) Callback function
在這function 中更新時間顯示。

啟用NVIC RTC alarm interrupt以便在呼叫HAL_RTC_SetAlarm_IT啟動Alarm Interrupt，並在設定Alarm時間呼叫
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef* hrtc) Callback function
 
  • TIM1參數設定
TIM1設定為base timer 時間為120秒關閉螢幕，進入stop mode，系統clock為8M:
8M/(39999+1)=200(Hz)，
200/24000=0.0083(週期為1/0.0083=120秒)


NVIC啟用update interrupt

  • TIM2參數設定
TIM2仍設為Base timer 週期為50ms(Prescaler:7999, ARR:50) 
PB13~15設為EXTI，PB13為時間設定選擇鍵，PB15為鬧鐘設定選擇鍵，PB14為數值調整鍵。


Enable EXTI line[15:10] interrupts

當按鍵按下時產生中斷呼叫HAL_GPIO_EXTI_Callbak function，啟動TIM2
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	if ((GPIO_Pin == GPIO_PIN_13 ||GPIO_Pin == GPIO_PIN_14 || GPIO_Pin == GPIO_PIN_15) && !buttonPress)
	{
		buttonPress=1;
		HAL_TIM_Base_Start_IT(&htim2);
	}


}
50ms後產生中斷呼叫HAL_TIM_PeriodElapsedCallback檢查是否仍是按下狀態，以達到software debounce功能。
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef* htim)
{
	if (htim->Instance==TIM2)
	{
		if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_13) == GPIO_PIN_RESET)
		{
			buttonPress=0;
			HAL_TIM_Base_Stop_IT(&htim2);
			EXTIButton13Press();
		}

.
.
.

}
  • TIM3參數設定:
        TIM3 Channel1(對應PB4) 設定為1Hz PWM， duty為70%，驅動鬧鈴蜂鳴器。


藉由呼叫HAL_RTC_SetAlarm_IT(&hrtc, &atime, RTC_FORMAT_BIN);設定Alarm，當時間到達時系統呼叫 callback function void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef* hrtc)，並啟動TIM3 Channel 1 PWM(HAL_TIM_PWM_Start_IT(&htim3, TIM_CHANNEL_1);)讓蜂鳴器發出聲音。

HAL_RTC_SetAlarm_IT(&hrtc, &atime, RTC_FORMAT_BIN);
.
.
.
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef* hrtc)
{
.
.
.
            HAL_TIM_PWM_Start_IT(&htim3, TIM_CHANNEL_1);
.
.
.
}

在TIM3 PWM interrupt callback function 中檢查時間是否需要停止蜂鳴聲
void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef* htim)
{
        if (alarm_count >= ALARM_BUZZ) //after ALARM_BUZZ Second turn off alarm
{
clearAlarm();
.
                .
                .
           };
}



實作展示:





使用OLED128x64 I2C介面200歐姆上拉電阻，使用程式庫
複製ssd1306.c ssd1306_fonts,c ssd1306.h ssd1306_fonts.h,ssd1306_conf.h

完整程式碼:
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * 
© Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.

  *
  * 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"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "ssd1306.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define BLINK_DELAY 		200
#define ALARM_BUZZ			20
#define ALARM_REPEAT		3
#define ALARM_RESUME_MIN	5
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;

RTC_HandleTypeDef hrtc;

TIM_HandleTypeDef htim1;
TIM_HandleTypeDef htim2;
TIM_HandleTypeDef htim3;

/* USER CODE BEGIN PV */
RTC_TimeTypeDef stime;
RTC_DateTypeDef sdate;
RTC_AlarmTypeDef atime;
uint8_t year, month,day,hour, min,sec,ahour,amin;

char sDateBuf[12], sTimeBuf[10], sWeekdayBuf[10],sAlarmBuf[10];
uint8_t alarmSet=0;
uint8_t alarmEvent=0;
uint8_t buttonPress=0;
uint8_t startTimer1=0;
uint8_t inStopMode=0,enterStopMode=0;
uint8_t opMode=0; //0:normal, 1: in adjust time mode, 2: in set Alarm mode
uint8_t adjustTimeItem = 0; //0:year,1:month, 2:day, 3;Hour, 4:min, 5:sec
uint8_t adjustAlarmItem=0; // 0: enter alarm set mode, 1:on-off,2:hour,3:minute
uint8_t strWeekday[7][10]={	"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
uint8_t alarm_count=0;
uint8_t alarm_resume=0;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_RTC_Init(void);
static void MX_I2C1_Init(void);
static void MX_TIM1_Init(void);
static void MX_TIM2_Init(void);
static void MX_TIM3_Init(void);
/* USER CODE BEGIN PFP */
void EXTIButton13Press(void);
void EXTIButton14Press(void);
void EXTIButton15Press(void);
void wakeUpFromStopMode(void);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
static uint8_t isLeapYear(uint16_t nYear)
{
  if ((nYear % 4U) != 0U)
  {
    return 0U;
  }

  if ((nYear % 100U) != 0U)
  {
    return 1U;
  }

  if ((nYear % 400U) == 0U)
  {
    return 1U;
  }
  else
  {
    return 0U;
  }
}
void adjustAlarm(void)
{
	char buf[4];
	switch(adjustAlarmItem)
	{
	case 1:
  		if(alarmSet)
  		{
  			sprintf(buf,"ON");
  		}
  		else
  		{
  			sprintf(buf,"OFF");
  		}
  		ssd1306_SetCursor(1, 1);
  		ssd1306_WriteString("   ", Font_11x18, White);
  		ssd1306_UpdateScreen();
  		HAL_Delay(BLINK_DELAY/4);

  		ssd1306_SetCursor(1, 1);
  		ssd1306_WriteString(buf, Font_11x18, White);
  		ssd1306_UpdateScreen();
  		HAL_Delay(BLINK_DELAY);
  		break;
  	case 2:
  		ssd1306_SetCursor(5, 22);
  		ssd1306_WriteString("  ", Font_16x26, White);
  		ssd1306_UpdateScreen();
  		HAL_Delay(BLINK_DELAY/4);
  		sprintf(buf, "%02d", ahour);
  		ssd1306_SetCursor(5, 22);
  		ssd1306_WriteString(buf, Font_16x26, White);
  		ssd1306_UpdateScreen();
  		HAL_Delay(BLINK_DELAY);
  		break;
  	case 3:
  		ssd1306_SetCursor(53, 22);
  		ssd1306_WriteString("  ", Font_16x26, White);
  		ssd1306_UpdateScreen();
  		HAL_Delay(BLINK_DELAY/4);
  		sprintf(buf, "%02d", amin);
  		ssd1306_SetCursor(53, 22);
  		ssd1306_WriteString(buf, Font_16x26, White);
  		ssd1306_UpdateScreen();
  		HAL_Delay(BLINK_DELAY);
  		break;
	}
}
void adjustTime(void)
{
	char buf[4];
	switch(adjustTimeItem)
	{
	case 0:

		ssd1306_SetCursor(1, 1);
		ssd1306_WriteString("  ", Font_11x18, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY/4);
		sprintf(buf, "%d", year);
		ssd1306_SetCursor(1, 1);
		ssd1306_WriteString(buf, Font_11x18, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY);
		break;
	case 1:

		ssd1306_SetCursor(34, 1);
		ssd1306_WriteString("  ", Font_11x18, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY/4);
		sprintf(buf, "%02d", month);
		ssd1306_SetCursor(34, 1);
		ssd1306_WriteString(buf, Font_11x18, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY);
		break;
	case 2:

		ssd1306_SetCursor(67, 1);
		ssd1306_WriteString("  ", Font_11x18, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY/4);
		sprintf(buf, "%02d", day);
		ssd1306_SetCursor(67, 1);
		ssd1306_WriteString(buf, Font_11x18, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY);
		break;
	case 3:
		ssd1306_SetCursor(1, 25);
		ssd1306_WriteString("  ", Font_16x26, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY/4);
		sprintf(buf, "%02d", hour);
		ssd1306_SetCursor(1, 25);
		ssd1306_WriteString(buf, Font_16x26, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY);
		break;
	case 4:
		ssd1306_SetCursor(49, 25);
		ssd1306_WriteString("  ", Font_16x26, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY/4);
		sprintf(buf, "%02d", min);
		ssd1306_SetCursor(49, 25);
		ssd1306_WriteString(buf, Font_16x26, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY);
		break;
	case 5:
		ssd1306_SetCursor(97, 31);
		ssd1306_WriteString("  ", Font_11x18, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY/4);
		sprintf(buf, "%02d", sec);
		ssd1306_SetCursor(97, 31);
		ssd1306_WriteString(buf, Font_11x18, White);
		ssd1306_UpdateScreen();
		HAL_Delay(BLINK_DELAY);
		break;

	}
}
/* 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_RTC_Init();
  MX_I2C1_Init();
  MX_TIM1_Init();
  MX_TIM2_Init();
  MX_TIM3_Init();
  /* USER CODE BEGIN 2 */
   ssd1306_Init();
   HAL_TIM_Base_Start_IT(&htim1);
   startTimer1 = 1;
  HAL_TIM_Base_Start_IT(&htim2);
  HAL_TIM_Base_Stop_IT(&htim2);
  atime.Alarm=RTC_ALARM_A;
  atime.AlarmTime.Hours=0;
  atime.AlarmTime.Minutes=0;
  atime.AlarmTime.Seconds=0;

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	  if (enterStopMode)
	  {
		  enterStopMode=0;
		  HAL_PWR_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_STOPENTRY_WFI);
	  }
	  switch(opMode)
	  {

	  case 1:	//in adjust Time Mode
		  adjustTime();
		  break;
	  case 2: 	// in set Alarm Mode
		  adjustAlarm();
		  break;
	  }


    /* 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 = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSE;
  RCC_OscInitStruct.LSEState = RCC_LSE_ON;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  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_HSI;
  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_0) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC;
  PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief I2C1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_I2C1_Init(void)
{

  /* USER CODE BEGIN I2C1_Init 0 */

  /* USER CODE END I2C1_Init 0 */

  /* USER CODE BEGIN I2C1_Init 1 */

  /* USER CODE END I2C1_Init 1 */
  hi2c1.Instance = I2C1;
  hi2c1.Init.ClockSpeed = 400000;
  hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
  hi2c1.Init.OwnAddress1 = 0;
  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c1.Init.OwnAddress2 = 0;
  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN I2C1_Init 2 */

  /* USER CODE END I2C1_Init 2 */

}

/**
  * @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 */

  RTC_TimeTypeDef sTime = {0};
  RTC_DateTypeDef DateToUpdate = {0};

  /* USER CODE BEGIN RTC_Init 1 */

  /* USER CODE END RTC_Init 1 */
  /** Initialize RTC Only
  */
  hrtc.Instance = RTC;
  hrtc.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
  hrtc.Init.OutPut = RTC_OUTPUTSOURCE_ALARM;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
    Error_Handler();
  }

  /* USER CODE BEGIN Check_RTC_BKUP */
  if (HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR1) != 0x6060)
  {

  /* USER CODE END Check_RTC_BKUP */

  /** Initialize RTC and set the Time and Date
  */
  sTime.Hours = 13;
  sTime.Minutes = 56;
  sTime.Seconds = 0;

  if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) != HAL_OK)
  {
    Error_Handler();
  }
  DateToUpdate.WeekDay = RTC_WEEKDAY_SUNDAY;
  DateToUpdate.Month = RTC_MONTH_SEPTEMBER;
  DateToUpdate.Date = 26;
  DateToUpdate.Year = 20;

  if (HAL_RTC_SetDate(&hrtc, &DateToUpdate, RTC_FORMAT_BIN) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN RTC_Init 2 */
  	  uint32_t dateToStore;
  	  memcpy(&dateToStore,&(hrtc.DateToUpdate),sizeof(uint32_t));
  	  BKP->DR2 = dateToStore >> 16;
  	  BKP->DR3 = dateToStore & 0xffff;

	  HAL_RTCEx_BKUPWrite(&hrtc, RTC_BKP_DR1, 0x6060);
  }
  else
  {
	  uint32_t dateMem;
	  dateMem = BKP->DR2 << 16;
	  dateMem |= BKP->DR3;

	  memcpy(&DateToUpdate,&dateMem,sizeof(uint32_t));
	  HAL_RTC_SetDate(&hrtc, &DateToUpdate, RTC_FORMAT_BIN);
          HAL_RTC_GetTime(&hrtc, &stime, RTC_FORMAT_BIN);  //get time counter and call RTC_DateUpdate
	  HAL_RTCEx_SetSecond_IT(&hrtc);

  }

  /* USER CODE END RTC_Init 2 */

}

/**
  * @brief TIM1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_TIM1_Init(void)
{

  /* USER CODE BEGIN TIM1_Init 0 */

  /* USER CODE END TIM1_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};

  /* USER CODE BEGIN TIM1_Init 1 */

  /* USER CODE END TIM1_Init 1 */
  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 39999;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 24000;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM1_Init 2 */

  /* USER CODE END TIM1_Init 2 */

}

/**
  * @brief TIM2 Initialization Function
  * @param None
  * @retval None
  */
static void MX_TIM2_Init(void)
{

  /* USER CODE BEGIN TIM2_Init 0 */

  /* USER CODE END TIM2_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};

  /* USER CODE BEGIN TIM2_Init 1 */

  /* USER CODE END TIM2_Init 1 */
  htim2.Instance = TIM2;
  htim2.Init.Prescaler = 7999;
  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim2.Init.Period = 50;
  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM2_Init 2 */

  /* USER CODE END TIM2_Init 2 */

}

/**
  * @brief TIM3 Initialization Function
  * @param None
  * @retval None
  */
static void MX_TIM3_Init(void)
{

  /* USER CODE BEGIN TIM3_Init 0 */

  /* USER CODE END TIM3_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};

  /* USER CODE BEGIN TIM3_Init 1 */

  /* USER CODE END TIM3_Init 1 */
  htim3.Instance = TIM3;
  htim3.Init.Prescaler = 7999;
  htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim3.Init.Period = 999;
  htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim3) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 700;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM3_Init 2 */

  /* USER CODE END TIM3_Init 2 */
  HAL_TIM_MspPostInit(&htim3);

}

/**
  * @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_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pins : PB13 PB14 PB15 */
  GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(EXTI15_10_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);

}

/* USER CODE BEGIN 4 */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	if ((GPIO_Pin == GPIO_PIN_13 ||GPIO_Pin == GPIO_PIN_14 || GPIO_Pin == GPIO_PIN_15) && !buttonPress)
	{
		buttonPress=1;
		HAL_TIM_Base_Start_IT(&htim2);
	}


}
void HAL_RTCEx_RTCEventCallback(RTC_HandleTypeDef* hrtc)
{
	if (opMode==0)
	{
		HAL_RTC_GetTime(hrtc, &stime, RTC_FORMAT_BIN);
		HAL_RTC_GetDate(hrtc, &sdate, RTC_FORMAT_BIN);
		ssd1306_Fill(Black);

		sprintf(sTimeBuf, "%02d", stime.Seconds);
		ssd1306_SetCursor(97, 31);
		ssd1306_WriteString(sTimeBuf, Font_11x18, White);

		sprintf(sTimeBuf, "%02d:%02d:", stime.Hours,stime.Minutes);
		ssd1306_SetCursor(1,25);
		ssd1306_WriteString(sTimeBuf, Font_16x26, White);

		sprintf(sDateBuf, "%02d/%02d/%02d", sdate.Year,sdate.Month,sdate.Date);
		ssd1306_SetCursor(1,1);
		ssd1306_WriteString(sDateBuf, Font_11x18, White);

		sprintf(sWeekdayBuf, "%s", strWeekday[sdate.WeekDay]);
		ssd1306_SetCursor((int)(128-strlen(sWeekdayBuf)*7),7);
		ssd1306_WriteString(sWeekdayBuf, Font_7x10, White);

		if (alarmSet)
		{
			sprintf(sAlarmBuf, "%02d:%02d", atime.AlarmTime.Hours,atime.AlarmTime.Minutes);
			ssd1306_SetCursor(52, 52);
			ssd1306_WriteString(sAlarmBuf, Font_7x10, White);
			ssd1306_SetCursor(1, 52);
			ssd1306_WriteString("Alarm: ", Font_7x10, White);
		}



		ssd1306_UpdateScreen();

	}


}
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef* htim)
{
	if (htim->Instance==TIM2)
	{
		if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_13) == GPIO_PIN_RESET)
		{
			buttonPress=0;
			HAL_TIM_Base_Stop_IT(&htim2);
			EXTIButton13Press();
		}
		if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_14) == GPIO_PIN_RESET)
		{
			buttonPress=0;
			HAL_TIM_Base_Stop_IT(&htim2);
			EXTIButton14Press();
		}
		if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_15) == GPIO_PIN_RESET)
		{
			buttonPress=0;
			HAL_TIM_Base_Stop_IT(&htim2);
			EXTIButton15Press();
		}
	}
	if (htim->Instance==TIM1)
	{

		if (startTimer1 && !alarmEvent)
		{
			ssd1306_SetDisplayOn(0);
			startTimer1=0;
			HAL_TIM_Base_Stop_IT(htim);
			inStopMode=1;
			enterStopMode=1;
		}

	}

}

void clearAlarm(void)
{
	HAL_TIM_PWM_Stop_IT(&htim3, TIM_CHANNEL_1);
	alarmEvent=0;
	alarmSet=0;
	alarm_count=0;

}

void EXTIButton13Press(void)
{
	 if(alarmEvent && alarmSet)
	  {
		 clearAlarm();
		 return;
	  }
	if (inStopMode)
	{
		wakeUpFromStopMode();
	}
	else
	{
		if (startTimer1)
		{
			startTimer1=0;
			HAL_TIM_Base_Stop_IT(&htim1);
		}
		switch(opMode)
		{
		case 0:
			opMode++;
			hour=stime.Hours;
			min=stime.Minutes;
			sec=stime.Seconds;
			year=sdate.Year;
			month=sdate.Month;
			day=sdate.Date;
			break;
		case 1:
			adjustTimeItem++;
			if (adjustTimeItem==6)
			{
				opMode=0;
				adjustTimeItem=0;
				stime.Hours=hour;
				stime.Minutes=min;
				stime.Seconds=sec;
				sdate.Year=year;
				sdate.Month=month;
				sdate.Date=day;
				atime.AlarmTime.Hours=ahour;
				atime.AlarmTime.Minutes=amin;
				if (HAL_RTC_SetTime(&hrtc, &stime, RTC_FORMAT_BIN) != HAL_OK)
				{
					Error_Handler();
				}
				if (HAL_RTC_SetDate(&hrtc, &sdate, RTC_FORMAT_BIN) != HAL_OK)
				{
					Error_Handler();
				}
				if (alarmSet)
				{
					HAL_RTC_SetAlarm_IT(&hrtc, &atime, RTC_FORMAT_BIN);
				}

				uint32_t dateToStore;
				memcpy(&dateToStore,&(hrtc.DateToUpdate),sizeof(uint32_t));
				  BKP->DR2 = dateToStore >> 16;
				  BKP->DR3 = dateToStore & 0xffff;

				  startTimer1=1;

				  HAL_TIM_Base_Start_IT(&htim1);

			}
		}
	}

}
void EXTIButton14Press(void)
{
	if(alarmEvent && alarmSet)
	  {
		 clearAlarm();
	  }
	if (inStopMode)
	{
		wakeUpFromStopMode();
	}
	else
	{
		if (opMode==1)
		{
			int mDays=31;
			switch(adjustTimeItem)
			{
			case 0:
				year++;
				if (year > 99) year=20;
				break;

			case 1:
				month++;
				if (month > 12) month=1;
			case 2:

				if (month == 2)
				{
					if (isLeapYear(year))
					{
						mDays=29;
					} else {
						mDays=28;
					}
				}
				if (month == 4 || month == 6 || month == 9 || month == 11)
				{
					mDays=30;
				}
				day++;
				if (day > mDays) day=1;
				break;
			case 3:
				hour=(hour+1)%24;

						break;
			case 4:
				min=(min+1)%60;
						break;
			case 5:
				sec=(sec+1)%60;
						break;
			}
		}
		if (opMode==2)
		{
			switch(adjustAlarmItem)
			{
			case 1:
				alarmSet = (alarmSet+1)%2;
				break;
			case 2:
				ahour = (ahour+1)%24;
				break;
			case 3:
				amin = (amin+1)%60;
				break;
			}
		}
	}

}

void EXTIButton15Press(void)
{
	char buf[6];
	if(alarmEvent && alarmSet)
   {
	  clearAlarm();
	  return;
   }
	if (inStopMode)
	{
		wakeUpFromStopMode();
	}
	else
	{
		opMode=2;
		if (startTimer1)
		{
			startTimer1=0;
			HAL_TIM_Base_Stop_IT(&htim1);
		}
		if (adjustAlarmItem == 0)
		{
			ssd1306_Fill(Black);
			if (alarmSet)
			{
				sprintf(buf,"ON ");
			}
			else
			{
				sprintf(buf, "OFF");
			}
			ssd1306_SetCursor(1, 1);
			ssd1306_WriteString(buf, Font_11x18, White);
			sprintf(buf, "%02d:%02d", ahour, amin);
			ssd1306_SetCursor(5, 22);
			ssd1306_WriteString(buf, Font_16x26, White);
			ssd1306_UpdateScreen();

		}
		adjustAlarmItem++;
		if (adjustAlarmItem == 4)
		{
			opMode=0;
			adjustAlarmItem=0;
			atime.AlarmTime.Hours=ahour;
			atime.AlarmTime.Minutes=amin;
			if (alarmSet)
			{
				alarmEvent=0;
				alarm_resume=0;
				HAL_RTC_SetAlarm_IT(&hrtc, &atime, RTC_FORMAT_BIN);
			}
			startTimer1=1;
			HAL_TIM_Base_Start_IT(&htim1);
		}
	}

}

void wakeUpFromStopMode(void)
{
	inStopMode=0;
	ssd1306_SetDisplayOn(1);
	startTimer1=1;
	HAL_TIM_Base_Start_IT(&htim1);
}

void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef* hrtc)
{

	if(alarmSet)
	{
		if (inStopMode)
		{
			wakeUpFromStopMode();
		}
		alarmEvent=1;
		HAL_TIM_PWM_Start_IT(&htim3, TIM_CHANNEL_1);
	}
}

void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef* htim)
{
	alarm_count++;
	if (alarm_count >= ALARM_BUZZ) //after ALARM_BUZZ Second turn off alarm
	{
		clearAlarm();
		alarm_resume++;
		if (alarm_resume < ALARM_REPEAT)
		{
			amin += ALARM_RESUME_MIN;   // resume alarm ALARM_RESUME_MIN minutes later
			if (amin >=60)
			{
				ahour++;
				amin = amin % 60;
				if (ahour >=24) ahour % 24;
			}
			atime.AlarmTime.Hours=ahour;
			atime.AlarmTime.Minutes=amin;
			alarmSet = 1;
			HAL_RTC_SetAlarm_IT(&hrtc, &atime, RTC_FORMAT_BIN);

		}
		else
		{
			alarm_resume=0;
		}
	}
}
/* 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 */

  /* USER CODE END Error_Handler_Debug */
}

#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,
     tex: 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****/


張貼者： 於

沒有留言:

張貼留言

訂閱： 張貼留言 (Atom)