/**
* @brief RTC Wakeup Timer configuration function using interrupt
* @param hrtc
* @arg hrtc_bsp
* @param WakeUptime_ms provide time in 1 to 10 millisecond
* and 1 second to 60 seconds (in msec unit)
* NOTE minimum value of WakeUptime_ms is 1 msec.
*/
void BSP_RTC_WakeUpTimer_Init(uint16_t WakeUptime_ms)
{
/********************************************************************//**
* @brief RTC_WAKEUPCLOCK_RTCCLK_DIV2 = 500KHZ
* 1 millisecond count = 500000/1000
* RTC_WAKEUPCLOCK_CK_SPRE_16BITS - 1HZ clock selected
* RTC_WAKEUPCLOCK_RTCCLK_DIV16 - 1MHZ/16 = 62500
* 62500 count = 1sec
**********************************************************************/
uint8_t WakeUp_clock=0;
uint16_t WakeUpcount=0;
if (WakeUptime_ms <= 10 ) //1 msec to 10 msec
{
WakeUp_clock = RTC_WAKEUPCLOCK_RTCCLK_DIV2;
WakeUpcount = (500000 * WakeUptime_ms)/1000;
}
else if (1000 <= WakeUptime_ms <= 60000) //1 sec to 60 sec
{
WakeUp_clock = RTC_WAKEUPCLOCK_CK_SPRE_16BITS;
WakeUpcount = (WakeUptime_ms/1000) - 1 ;
}
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc_bsp, WakeUpcount, WakeUp_clock);
}
/*config wake up timer*/
void rtc_wake_up_timer_config(uint32_t time)
{
/*## Configure the Wake up timer ###########################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 20s the WakeUpCounter is set to 0xA017:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~32.768KHz) = ~0,488 ms
Wakeup Time = ~20s = 0,488ms * WakeUpCounter
==> WakeUpCounter = ~20s/0,488ms = 40983 = 0xA017 */
/* Disable Wake-up timer */
time = (time*1000)/488;
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
/*## Clear all related wakeup flags ########################################*/
/* Clear PWR wake up Flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
/* Clear RTC Wake Up timer Flag */
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RTCHandle, RTC_FLAG_WUTF);
/*## Setting the Wake up time ##############################################*/
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, time-1, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
}
/**
* @brief This function configures the system to enter Standby mode with RTC
* clocked by LSE or LSI and with Backup SRAM ON for current consumption
* measurement purpose.
* STANDBY Mode with RTC clocked by LSE/LSI and BKPSRAM
* ====================================================
* - RTC Clocked by LSE or LSI
* - Backup SRAM ON
* - IWDG OFF
* - Automatic Wakeup using RTC clocked by LSE/LSI (after ~20s)
* @param None
* @retval None
*/
void StandbyRTCBKPSRAMMode_Measure(void)
{
/*## Configure the RTC peripheral###########################################*/
/* Configure RTC prescaler and RTC data registers as follow:
- Hour Format = Format 24
- Asynch Prediv = Value according to source clock
- Synch Prediv = Value according to source clock
- OutPut = Output Disable
- OutPutPolarity = High Polarity
- OutPutType = Open Drain */
RTCHandle.Instance = RTC;
RTCHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RTCHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
RTCHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
RTCHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RTCHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTCHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if(HAL_RTC_Init(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*## Configure the Wake up timer ###########################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 20s the WakeUpCounter is set to 0xA017:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~32.768KHz) = ~0,488 ms
Wakeup Time = ~20s = 0,488ms * WakeUpCounter
==> WakeUpCounter = ~20s/0,488ms = 40983 = 0xA017 */
/* Disable Wake-up timer */
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
/*## Clear all related wakeup flags ########################################*/
/* Clear PWR wake up Flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
/* Clear RTC Wake Up timer Flag */
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RTCHandle, RTC_FLAG_WUTF);
/*## Setting the Wake up time ##############################################*/
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, (0xA000-1), RTC_WAKEUPCLOCK_RTCCLK_DIV16);
/* Enable BKPRAM Clock */
__HAL_RCC_BKPSRAM_CLK_ENABLE();
/* Enable the Backup SRAM low power Regulator */
HAL_PWREx_EnableBkUpReg();
/*## Enter Standby Mode ####################################################*/
/* Request to enter STANDBY mode */
HAL_PWR_EnterSTANDBYMode();
}
/**
* @brief Configure the RTC peripheral by selecting the clock source.
* @param None
* @retval None
*/
static void RTC_Config(void)
{
/*##-1- Configure the RTC peripheral #######################################*/
/* Configure RTC prescaler and RTC data registers */
/* RTC configured as follow:
- Hour Format = Format 24
- Asynch Prediv = Value according to source clock
- Synch Prediv = Value according to source clock
- OutPut = Output Disable
- OutPutPolarity = High Polarity
- OutPutType = Open Drain */
RtcHandle.Instance = RTC;
RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV; /* 0x7F */
RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV; /* (39KHz / 128) - 1 = 0x130 */
RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if(HAL_RTC_Init(&RtcHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-2- Configure the RTC Wake up peripheral #################################*/
/* Setting the Wake up time to 1 s
If RTC_WAKEUPCLOCK_CK_SPRE_16BITS is selected, the frequency is 1Hz,
this allows to get a wakeup time equal to 1 s if the ciunter is 0x0 */
HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, 0x0, RTC_WAKEUPCLOCK_CK_SPRE_16BITS);
}
/* RTC init function */
void MX_RTC_Init(void)
{
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
RTC_AlarmTypeDef sAlarm;
/**Initialize RTC and set the Time and Date
*/
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;
HAL_RTC_Init(&hrtc);
sTime.Hours = 0;
sTime.Minutes = 0;
sTime.Seconds = 0;
sTime.SubSeconds = 0;
sTime.TimeFormat = RTC_HOURFORMAT12_AM;
sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sTime.StoreOperation = RTC_STOREOPERATION_RESET;
HAL_RTC_SetTime(&hrtc, &sTime, FORMAT_BIN);
sDate.WeekDay = RTC_WEEKDAY_MONDAY;
sDate.Month = RTC_MONTH_JANUARY;
sDate.Date = 1;
sDate.Year = 0;
HAL_RTC_SetDate(&hrtc, &sDate, FORMAT_BIN);
/**Enable the Alarm A
*/
sAlarm.AlarmTime.Hours = 0;
sAlarm.AlarmTime.Minutes = 0;
sAlarm.AlarmTime.Seconds = 0;
sAlarm.AlarmTime.SubSeconds = 0;
sAlarm.AlarmTime.TimeFormat = RTC_HOURFORMAT12_AM;
sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
sAlarm.AlarmMask = RTC_ALARMMASK_NONE;
sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL;
sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE;
sAlarm.AlarmDateWeekDay = 1;
sAlarm.Alarm = RTC_ALARM_A;
HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, FORMAT_BIN);
/**Enable the Alarm B
*/
sAlarm.Alarm = RTC_ALARM_B;
HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, FORMAT_BIN);
/**Enable the WakeUp
*/
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 196, RTC_WAKEUPCLOCK_RTCCLK_DIV2);
}
//------------------------------------------------------------
//wake up control
void rtc_wakeup(uint8_t flag)
{
if(flag==0)
HAL_RTCEx_DeactivateWakeUpTimer(&hrtc);
else
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 10240, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
}
/**
* @brief This function configures the system to enter Standby mode with RTC
* clocked by LSE or LSI for current consumption measurement purpose.
* STANDBY Mode with RTC clocked by LSE/LSI
* ========================================
* - RTC Clocked by LSE/LSI
* - IWDG OFF
* - Automatic Wakeup using RTC clocked by LSE/LSI (after ~20s)
* @param None
* @retval None
*/
void StandbyRTCMode_Measure(void)
{
RTCHandle.Instance = RTC;
/* Configure RTC prescaler and RTC data registers as follows:
- Hour Format = Format 24
- Asynch Prediv = Value according to source clock
- Synch Prediv = Value according to source clock
- OutPut = Output Disable
- OutPutPolarity = High Polarity
- OutPutType = Open Drain */
RTCHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RTCHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
RTCHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
RTCHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RTCHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTCHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if(HAL_RTC_Init(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* The Following Wakeup sequence is highly recommended prior to each Standby mode entry
mainly when using more than one wakeup source this is to not miss any wakeup event.
- Disable all used wakeup sources,
- Clear all related wakeup flags,
- Re-enable all used wakeup sources,
- Enter the Standby mode.
*/
/*#### Disable all used wakeup sources: Wake up Timer ######################*/
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
/*#### Clear all related wakeup flags ######################################*/
/* Clear PWR wake up Flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
/* Clear RTC Wake Up timer Flag */
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RTCHandle, RTC_FLAG_WUTF);
/*#### Setting the Wake up time ############################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 20s the WakeUpCounter is set to 0xA017:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~32.768KHz) = ~0,488 ms
Wakeup Time = ~20s = 0,488ms * WakeUpCounter
==> WakeUpCounter = ~20s/0,488ms = 40983 = 0xA017 */
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, 0xA017, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
/* Request to enter STANDBY mode */
HAL_PWR_EnterSTANDBYMode();
}
void rtc_set_wake_up_timer(uint32_t delta)
{
uint32_t wake_up_counter = delta / (2000000 / RTC_CLOCK);
if (HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, wake_up_counter,
RTC_WAKEUPCLOCK_RTCCLK_DIV2) != HAL_OK) {
error("Set wake up timer failed\n");
}
}
/* RTC init function */
void MX_RTC_Init(void)
{
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
RTC_AlarmTypeDef sAlarm;
/**Initialize RTC and set the Time and Date
*/
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;
HAL_RTC_Init(&hrtc);
/* USER CODE BEGIN*/
rtc_backup_init();
if(rtc_check()==0)
{
sTime.Hours = 16;
sTime.Minutes = 52;
sTime.Seconds = 50;
sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sTime.StoreOperation = RTC_STOREOPERATION_RESET;
HAL_RTC_SetTime(&hrtc, &sTime, FORMAT_BIN);
sDate.WeekDay = RTC_WEEKDAY_WEDNESDAY;
sDate.Month = RTC_MONTH_APRIL;
sDate.Date = 20;
sDate.Year = 16;
HAL_RTC_SetDate(&hrtc, &sDate, FORMAT_BIN);
/**Enable the Alarm A
*/
sAlarm.AlarmTime.Hours = 16;
sAlarm.AlarmTime.Minutes = 53;
sAlarm.AlarmTime.Seconds = 1;
sAlarm.AlarmTime.SubSeconds = 0;
sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
sAlarm.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY;
sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL;
sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE;
sAlarm.AlarmDateWeekDay = 1;
sAlarm.Alarm = RTC_ALARM_A;
HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, FORMAT_BIN);
}
/* USER CODE END*/
/**Enable the WakeUp
*/
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 10240, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
}
/* RTC init function */
void MX_RTC_Init(void)
{
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
/**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.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&hrtc) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Initialize RTC and set the Time and Date
*/
if(HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR0) != 0x32F2){
sTime.Hours = 0x0;
sTime.Minutes = 0x0;
sTime.Seconds = 0x0;
sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sTime.StoreOperation = RTC_STOREOPERATION_RESET;
if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BCD) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
sDate.WeekDay = RTC_WEEKDAY_MONDAY;
sDate.Month = RTC_MONTH_JANUARY;
sDate.Date = 0x1;
sDate.Year = 0x0;
if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
HAL_RTCEx_BKUPWrite(&hrtc,RTC_BKP_DR0,0x32F2);
}
/**Enable the WakeUp
*/
if (HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 5, RTC_WAKEUPCLOCK_CK_SPRE_16BITS) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32L0xx HAL library initialization:
- Configure the Flash prefetch, Flash preread and Buffer caches
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Low Level Initialization
*/
HAL_Init();
/* Configure LED2 to handle error handler */
BSP_LED_Init(LED2);
/* Configure the system clock @ 32 Mhz */
SystemClock_Config();
/* Configure the system Power */
SystemPower_Config();
while (1)
{
/* Insert 5 seconds delay */
HAL_Delay(5000);
/* Disable Wakeup Counter */
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
/*## Setting the Wake up time ############################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 4s the WakeUpCounter is set to 0x1FFF:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~39.000KHz) = ~0,410 ms
Wakeup Time = ~4s = 0,410ms * WakeUpCounter
==> WakeUpCounter = ~4s/0,410ms = 9750 = 0x2616 */
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, 0x2616, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
/* Enter Stop Mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* Configures system clock after wake-up from STOP: enable HSI, PLL and select
PLL as system clock source (HSI and PLL are disabled automatically in STOP mode) */
SystemClockConfig_STOP();
}
}
TM_RTC_Result_t TM_RTC_Interrupts(TM_RTC_Int_t int_value) {
uint32_t int_val;
/* Disable wakeup interrupt */
__HAL_RTC_WAKEUPTIMER_DISABLE(&hRTC);
/* Disable RTC interrupt flag */
__HAL_RTC_WAKEUPTIMER_DISABLE_IT(&hRTC, RTC_IT_WUT);
/* Clear pending bit */
__HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG();
/* Clear flag */
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&hRTC, RTC_FLAG_WUTF);
/* If enable again */
if (int_value != TM_RTC_Int_Disable) {
if (int_value == TM_RTC_Int_60s) {
int_val = 0x3BFFF; /* 60 seconds = 60 * 4096 / 1 = 245760 */
} else if (int_value == TM_RTC_Int_30s) {
int_val = 0x1DFFF; /* 30 seconds */
} else if (int_value == TM_RTC_Int_15s) {
int_val = 0xEFFF; /* 15 seconds */
} else if (int_value == TM_RTC_Int_10s) {
int_val = 0x9FFF; /* 10 seconds */
} else if (int_value == TM_RTC_Int_5s) {
int_val = 0x4FFF; /* 5 seconds */
} else if (int_value == TM_RTC_Int_2s) {
int_val = 0x1FFF; /* 2 seconds */
} else if (int_value == TM_RTC_Int_1s) {
int_val = 0x0FFF; /* 1 second */
} else if (int_value == TM_RTC_Int_500ms) {
int_val = 0x7FF; /* 500 ms */
} else if (int_value == TM_RTC_Int_250ms) {
int_val = 0x3FF; /* 250 ms */
} else if (int_value == TM_RTC_Int_125ms) {
int_val = 0x1FF; /* 125 ms */
}
/* Clock divided by 8, 32768 / 8 = 4096 */
/* 4096 ticks for 1second interrupt */
HAL_RTCEx_SetWakeUpTimer_IT(&hRTC, int_val, RTC_WAKEUPCLOCK_RTCCLK_DIV8);
/* Set NVIC */
HAL_NVIC_SetPriority(RTC_WKUP_IRQn, RTC_NVIC_PRIORITY, RTC_NVIC_WAKEUP_SUBPRIORITY);
HAL_NVIC_EnableIRQ(RTC_WKUP_IRQn);
}
/* Return OK */
return TM_RTC_Result_Ok;
}
/* StartDefaultTask function */
void StartDefaultTask(void const * argument)
{
int i = 1;
/* USER CODE BEGIN StartDefaultTask */
/* Infinite loop */
for(;;)
{
if ((i % 64) == 0)
{
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
while((PWR->CSR & (uint32_t) 0x00000001)!=0);//attesa che il WUF si azzeri (via HW)
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 16384, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);
HAL_PWR_EnterSTANDBYMode();
}
HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);
osDelay(100);
i++;
}
/* USER CODE END StartDefaultTask */
}
/* RTC init function */
void MX_RTC_Init(void)
{
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
/**Initialize RTC and set the Time and Date
*/
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;
HAL_RTC_Init(&hrtc);
sTime.Hours = 0x0;
sTime.Minutes = 0x0;
sTime.Seconds = 0x0;
sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sTime.StoreOperation = RTC_STOREOPERATION_RESET;
HAL_RTC_SetTime(&hrtc, &sTime, FORMAT_BCD);
sDate.WeekDay = RTC_WEEKDAY_MONDAY;
sDate.Month = RTC_MONTH_JANUARY;
sDate.Date = 0x1;
sDate.Year = 0x0;
HAL_RTC_SetDate(&hrtc, &sDate, FORMAT_BCD);
/**Enable the WakeUp
*/
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 799, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
}
/**
* @brief This function configures the system to enter Stop mode with RTC
* clocked by LSE or LSI for current consumption measurement purpose.
* STOP Mode with RTC clocked by LSE/LSI
* =====================================
* - RTC Clocked by LSE or LSI
* - Regulator in LP mode
* - HSI, HSE OFF and LSI OFF if not used as RTC Clock source
* - No IWDG
* - FLASH in deep power down mode
* - Automatic Wakeup using RTC clocked by LSE/LSI (~20s)
* @param None
* @retval None
*/
void StopMode_Measure(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Configure all GPIO as analog to reduce current consumption on non used IOs */
/* Enable GPIOs clock */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOI_CLK_ENABLE();
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Pin = GPIO_PIN_All;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Disable GPIOs clock */
__HAL_RCC_GPIOA_CLK_DISABLE();
__HAL_RCC_GPIOB_CLK_DISABLE();
__HAL_RCC_GPIOC_CLK_DISABLE();
__HAL_RCC_GPIOD_CLK_DISABLE();
__HAL_RCC_GPIOE_CLK_DISABLE();
__HAL_RCC_GPIOF_CLK_DISABLE();
__HAL_RCC_GPIOG_CLK_DISABLE();
__HAL_RCC_GPIOH_CLK_DISABLE();
__HAL_RCC_GPIOI_CLK_DISABLE();
RTCHandle.Instance = RTC;
/* Configure RTC prescaler and RTC data registers as follow:
- Hour Format = Format 24
- Asynch Prediv = Value according to source clock
- Synch Prediv = Value according to source clock
- OutPut = Output Disable
- OutPutPolarity = High Polarity
- OutPutType = Open Drain */
RTCHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RTCHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
RTCHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
RTCHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RTCHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTCHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if(HAL_RTC_Init(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*## Configure the Wake up timer ###########################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 20s the WakeUpCounter is set to 0xA017:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~32.768KHz) = ~0,488 ms
Wakeup Time = ~20s = 0,488ms * WakeUpCounter
==> WakeUpCounter = ~20s/0,488ms = 40983 = 0xA017 */
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, 0xA017, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
/* FLASH Deep Power Down Mode enabled */
HAL_PWREx_EnableFlashPowerDown();
/* Enter Stop Mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* Configures system clock after wake-up from STOP: enable HSE, PLL and select
PLL as system clock source (HSE and PLL are disabled in STOP mode) */
SYSCLKConfig_STOP();
/* Disable Wake-up timer */
if(HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure LED1, LED2, LED3 and LED4 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
/* Configure the system clock to 168 MHz */
SystemClock_Config();
/* Configure Key Button (EXTI_Line15) will be used to wakeup the system from STOP mode */
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);
/*## Configure the RTC peripheral #######################################*/
RTCHandle.Instance = RTC;
/* Configure RTC prescaler and RTC data registers as follow:
- Hour Format = Format 24
- Asynch Prediv = Value according to source clock
- Synch Prediv = Value according to source clock
- OutPut = Output Disable
- OutPutPolarity = High Polarity
- OutPutType = Open Drain */
RTCHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RTCHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
RTCHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
RTCHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RTCHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTCHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if(HAL_RTC_Init(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Infinite loop */
while (1)
{
/* Insert 5 second delay */
HAL_Delay(5000);
/*## Configure the Wake up timer ###########################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 4s the WakeUpCounter is set to 0x1FFF:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~32.768KHz) = ~0,488 ms
Wakeup Time = ~4s = 0,488ms * WakeUpCounter
==> WakeUpCounter = ~4s/0,488ms = 8191 = 0x1FFF */
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, 0x1FFF, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
/* Turn OFF LED's */
BSP_LED_Off(LED1);
BSP_LED_Off(LED2);
BSP_LED_Off(LED3);
BSP_LED_Off(LED4);
/* Enter Stop Mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* Disable Wakeup Counter */
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
/* Configures system clock after wake-up from STOP: enable HSE, PLL and select
PLL as system clock source (HSE and PLL are disabled in STOP mode) */
SYSCLKConfig_STOP();
}
}
int main(void)
{
/* USER CODE BEGIN 1 */
// AxesRaw_t data;
FRESULT res; /* FatFs function common result code */
uint32_t byteswritten, bytesread; /* File write/read counts */
char rtext[256]; /* File read buffer */
// HALL_SENS_PWR_ON;
// CLAMP_SENS_PWR_ON;
// 1. SPI1 is for ACC
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_ADC_Init();
MX_SDIO_SD_Init();
MX_SPI1_Init();
MX_SPI2_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
MX_FATFS_Init();
MX_RTC_Init();
/* USER CODE BEGIN 2 */
HAL_RTCEx_DeactivateWakeUpTimer(&hrtc);
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 1, RTC_WAKEUPCLOCK_CK_SPRE_16BITS);
EXTI0_IRQHandler_Config();
// EXTI13_IRQHandler_Config();
// HAL_DBGMCU_EnableDBGStopMode();
//HALL_SENS_PWR_ON;
//CLAMP_SENS_PWR_OFF;
// init gpio before!
UC_2_8V;
printf("FW start\r\n");
LIS3DH_PreInit();
LIS3DH_SetMode(LIS3DH_NORMAL); //reg1
LIS3DH_SetODR(LIS3DH_ODR_400Hz); //reg1
LIS3DH_SetAxis(LIS3DH_X_ENABLE | LIS3DH_Y_ENABLE | LIS3DH_Z_ENABLE ); //reg1
//Direct IRQ from watemark and overrun to 1st pin. reg3
LIS3DH_SetInt1Pin(LIS3DH_CLICK_ON_PIN_INT1_DISABLE | LIS3DH_I1_INT1_ON_PIN_INT1_DISABLE | LIS3DH_I1_INT2_ON_PIN_INT1_DISABLE |
LIS3DH_I1_DRDY1_ON_INT1_DISABLE | LIS3DH_I1_DRDY2_ON_INT1_DISABLE | LIS3DH_WTM_ON_INT1_ENABLE | LIS3DH_INT1_OVERRUN_DISABLE);
//REG4
LIS3DH_SetBDU(MEMS_ENABLE);
LIS3DH_SetFullScale(LIS3DH_FULLSCALE_2); //reg4
//REG5
LIS3DH_FIFOModeEnable(LIS3DH_FIFO_STREAM_MODE); //Enable store into FIFO reg5
LIS3DH_Int1LatchEnable(MEMS_ENABLE);
//LIS3DH_FIFO_CTRL_REG
LIS3DH_SetTriggerInt(LIS3DH_TRIG_INT1);
LIS3DH_SetWaterMark(15); // watermark for irq generation from fifo LIS3DH_FIFO_CTRL_REG
LIS3DH_ReadFIFO(); // clean FIFO and reset IRQ
while (1) {
//LIS3DH_GetInt1Src(&resp);
//printf("INT1SRC %i ", resp);
/*LIS3DH_GetFifoSourceBit(LIS3DH_FIFO_SRC_WTM, &resp);
printf("WTM %i ", resp);
LIS3DH_GetReg3Bit(LIS3DH_I1_WTM, &resp);
printf("WMBIT %i ", resp);
LIS3DH_GetFifoSourceFSS(&resp);
printf("FIFO %i\r\n", resp);
//LIS3DH_GetIntCounter(&resp);
//printf("Interrupts counter=%i\r\n", resp);
if (resp > 26) {
//rep:
//LIS3DH_GetFifoSourceFSS(&resp);
//printf("> %i recs in FIFO (while)\r\n", resp);
//HAL_Delay(15);
//LIS3DH_GetInt1Src(&resp);
/* rep:
if(LIS3DH_GetAccAxesRaw(&data)==1){
LIS3DH_GetFifoSourceBit(LIS3DH_FIFO_SRC_WTM, &resp);
//printf("X=%6d Y=%6d Z=%6d \r\n", data.AXIS_X, data.AXIS_Y, data.AXIS_Z);
printf(" READ WTM%i\r\n", resp);
} else {
printf("ER\r\n");
}
LIS3DH_GetFifoSourceFSS(&resp);
if (resp > 0) goto rep;
LIS3DH_ResetInt1Latch();
LIS3DH_FIFOModeEnable(LIS3DH_FIFO_STREAM_MODE);*/
LIS3DH_ReadFIFO();
HAL_Delay(2000);
}
//ENABLE ALL IRQs
//LIS3DH_SetInt1Pin(LIS3DH_CLICK_ON_PIN_INT1_DISABLE | LIS3DH_I1_INT1_ON_PIN_INT1_ENABLE | LIS3DH_I1_INT2_ON_PIN_INT1_ENABLE | LIS3DH_I1_DRDY1_ON_INT1_ENABLE | LIS3DH_I1_DRDY2_ON_INT1_ENABLE | LIS3DH_WTM_ON_INT1_ENABLE | LIS3DH_INT1_OVERRUN_ENABLE);
//LIS3DH_SetInt2Pin(LIS3DH_CLICK_ON_PIN_INT2_DISABLE | LIS3DH_I2_INT1_ON_PIN_INT2_ENABLE | LIS3DH_I2_INT2_ON_PIN_INT2_ENABLE | LIS3DH_I2_BOOT_ON_INT2_ENABLE | LIS3DH_INT_ACTIVE_HIGH);
// HAL_Delay(2000);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1) {
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
// if(LIS3DH_GetAccAxesRaw(&data)==1){
// printf("X=%6d Y=%6d Z=%6d \r\n", data.AXIS_X, data.AXIS_Y, data.AXIS_Z);
// } else {
// printf("ER\r\n");
// }
HAL_Delay(50);
// lowest_power(); //go to stop. Wakeup on RTC wakeup or 1st or 2d PIN wakeup
}
//SDIO FAT PART.
//ENABLE_2_5V; //DC-DC enable
SD_PWR_ON; //Power to SD card
//INIT SD and CARD after because no power to sd
HAL_Delay(50);
MX_SDIO_SD_Init();
MX_FATFS_Init();
/*##-1- FatFS: Link the SD disk I/O driver ##########*/
if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0){
/* success: set the orange LED on */
//HAL_GPIO_WritePin(GPIOG, GPIO_PIN_7, GPIO_PIN_RESET);
/*##-2- Register the file system object to the FatFs module
NB! mout right now!
###*/
res = f_mount(&SDFatFs, (TCHAR const*)SD_Path, 1) ;
if(res != FR_OK){
/* FatFs Initialization Error : set the red LED on */
printf ("Problem fmount\r\n");
while(1);
} else {
/*##-3- Create a FAT file system (format) on the logical drive#*/
/* WARNING: Formatting the uSD card will delete all content on the device */
res = f_mkfs((TCHAR const*)SD_Path, 0, 0);
if(res != FR_OK){
/* FatFs Format Error : set the red LED on */
printf ("Problem f_mkfs\r\n");
while(1);
} else {
/*##-4- Create & Open a new text file object with write access#*/
if(f_open(&MyFile, "Hello.txt", FA_CREATE_ALWAYS | FA_WRITE) != FR_OK){
/* 'Hello.txt' file Open for write Error : set the red LED on */
printf ("Problem f_open\r\n");
while(1);
} else {
/*##-5- Write data to the text file ####################*/
res = f_write(&MyFile, wtext, sizeof(wtext), (void*)&byteswritten);
if((byteswritten == 0) || (res != FR_OK)){
/* 'Hello.txt' file Write or EOF Error : set the red LED on */
printf ("Problem f_write\r\n");
while(1);
} else {
/*##-6- Successful open/write : set the blue LED on */
// HAL_GPIO_WritePin(GPIOG, GPIO_PIN_12, GPIO_PIN_RESET);
f_close(&MyFile);
/*##-7- Open the text file object with read access #*/
if(f_open(&MyFile, "Hello.txt", FA_READ) != FR_OK){
/* 'Hello.txt' file Open for read Error : set the red LED on */
//HAL_GPIO_WritePin(GPIOG, GPIO_PIN_10, GPIO_PIN_RESET);
printf ("Problem f_open\r\n");
while(1);
} else {
/*##-8- Read data from the text file #########*/
res = f_read(&MyFile, rtext, sizeof(wtext), &bytesread);
// if((strcmp(rtext,wtext)!=0)|| (res != FR_OK)){
// /* 'Hello.txt' file Read or EOF Error : set the red LED on */
// printf ("Problem f_read\r\n");
// while(1);
// } else {
// printf ("FAT operation done OK!\r\n");
/* Successful read : set the green LED On */
//HAL_GPIO_WritePin(GPIOG, GPIO_PIN_6, GPIO_PIN_RESET);
/*##-9- Close the open text file ################*/
f_close(&MyFile);
}
}
}
}
}
}
/*##-10- Unlink the micro SD disk I/O driver #########*/
FATFS_UnLinkDriver(SD_Path);
/* USER CODE END 3 */
}
/**
* @brief This function configures the system to enter Stop mode with RTC
* clocked by LSE or LSI for current consumption measurement purpose.
* STOP Mode with RTC clocked by LSE/LSI
* =====================================
* - RTC Clocked by LSE or LSI
* - Regulator in LP mode
* - HSI, HSE OFF and LSI OFF if not used as RTC Clock source
* - No IWDG
* - Automatic Wakeup using RTC clocked by LSE/LSI (~20s)
* @param None
* @retval None
*/
void StopRTCMode_Measure(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Configure all GPIO as analog to reduce current consumption on non used IOs */
/* Enable GPIOs clock */
/* Warning : Reconfiguring all GPIO will close the connexion with the debugger */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Pin = GPIO_PIN_All;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
/* Disable GPIOs clock */
__HAL_RCC_GPIOA_CLK_DISABLE();
__HAL_RCC_GPIOB_CLK_DISABLE();
__HAL_RCC_GPIOC_CLK_DISABLE();
__HAL_RCC_GPIOD_CLK_DISABLE();
__HAL_RCC_GPIOF_CLK_DISABLE();
RTCHandle.Instance = RTC;
/* Configure RTC prescaler and RTC data registers as follows:
- Hour Format = Format 24
- Asynch Prediv = Value according to source clock
- Synch Prediv = Value according to source clock
- OutPut = Output Disable
- OutPutPolarity = High Polarity
- OutPutType = Open Drain */
RTCHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RTCHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
RTCHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
RTCHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RTCHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTCHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*## Configure the Wake up timer ###########################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSE or LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 20s the WakeUpCounter is set to 0xA017:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~32.768KHz) = ~0,488 ms
Wakeup Time = ~20s = 0,488ms * WakeUpCounter
==> WakeUpCounter = ~20s/0,488ms = 40983 = 0xA017 */
/* Disable Wake-up timer */
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, 0xA017, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
/* Configure User push-button as external interrupt generator */
BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);
/* Enter Stop Mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* Configures system clock after wake-up from STOP: enable HSI and PLL with HSI as source*/
SystemClock_Config();
/* Disable Wake-up timer */
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
}
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_ADC_Init();
MX_I2C1_Init();
MX_RTC_Init();
MX_USART1_UART_Init();
MX_SPI2_Init();
/* Initialize interrupts */
MX_NVIC_Init();
/* USER CODE BEGIN 2 */
HAL_ADCEx_Calibration_Start(&hadc, ADC_SINGLE_ENDED);
/* Enable Ultra low power mode */
HAL_PWREx_EnableUltraLowPower();
__HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_HSI);
/* Buffer used for transmission on USART1 */
char tx1_buffer[120];
RFM95_init(&hspi2);
uint8_t payload_buff[14];
PAYLOAD_Garden payload_garden;
payload_garden.MessageType = 50;
payload_garden.MessageId = 0;
// Start in sensing mode.
state = MAIN_STATE_SENSE;
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1) {
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
/* Do some work */
if (state == MAIN_STATE_SENSE) {
HAL_ADC_Start(&hadc);
// junk readings
payload_garden.Temperature = TEMPERATURE_external();
payload_garden.CpuTemperature = TEMPERATURE_cpu();
HAL_GPIO_WritePin(GPIOA, LED_Pin, GPIO_PIN_SET);
payload_garden.MessageId++;
payload_garden.VCC = BATTERY_vcc();
payload_garden.ChargeMv = BATTERY_ChargeMv();
payload_garden.ChargeMa = BATTERY_ChargeMa();
/* Get the light reading while the adc gets ready */
payload_garden.Light = LIGHT_lux();
payload_garden.Temperature = TEMPERATURE_external();
payload_garden.CpuTemperature = TEMPERATURE_cpu();
HAL_ADC_Stop(&hadc);
sprintf(tx1_buffer, "id:%d, vcc:%d, mv:%d, ma:%d, C:%d, cpuC:%d, lux:%d\n",
payload_garden.MessageId,
payload_garden.VCC,
payload_garden.ChargeMv,
payload_garden.ChargeMa,
payload_garden.Temperature,
payload_garden.CpuTemperature,
payload_garden.Light);
HAL_UART_Transmit(&huart1, (uint8_t*) tx1_buffer, strlen(tx1_buffer), 1000);
PAYLOAD_Garden_serialize(payload_garden, payload_buff);
RFM95_send(&hspi2, payload_buff, 14);
state = MAIN_STATE_TX;
}
/* Do nothing while the transmission is in progress */
else if (state == MAIN_STATE_TX) {
if (dio0_action == 1) {
RFM95_setMode(&hspi2, RFM95_MODE_SLEEP);
state = MAIN_STATE_SLEEP;
}
//TMP while interrupts are investigated
//HAL_Delay(30);
//state = MAIN_STATE_SLEEP;
}
/* Now that all the work is done, sleep until its time to do it all again */
else if (state == MAIN_STATE_SLEEP) {
HAL_GPIO_WritePin(GPIOA, LED_Pin, GPIO_PIN_RESET);
//TMP while RFM is diabled
//HAL_Delay(1000);
/* Turn off the pin interrupts */
HAL_NVIC_DisableIRQ(EXTI4_15_IRQn);
HAL_SuspendTick();
/* Enter Stop Mode */
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 60,
RTC_WAKEUPCLOCK_CK_SPRE_16BITS);
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
HAL_RTCEx_DeactivateWakeUpTimer(&hrtc);
HAL_ResumeTick();
/* Turn on the pin interrupts */
HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);
state = MAIN_STATE_SENSE;
}
}
/* USER CODE END 3 */
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* Enable the CPU Cache */
CPU_CACHE_Enable();
/* STM32F7xx HAL library initialization:
- Configure the Flash ART accelerator on ITCM interface
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
HAL_Init();
/* Configure the system clock to 216 MHz */
SystemClock_Config();
/* Since MFX is used, LED init is done after clock config */
/* Configure LED1, LED2, LED3 and LED4 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
/* Tamper push-button (EXTI15_10) will be used to wakeup the system from STOP mode */
BSP_PB_Init(BUTTON_TAMPER, BUTTON_MODE_EXTI);
/*## Configure the RTC peripheral #######################################*/
/* Enable Power Clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* Allow Access to RTC Backup domaine */
HAL_PWR_EnableBkUpAccess();
RTCHandle.Instance = RTC;
/* Configure RTC prescaler and RTC data registers as follows:
- Hour Format = Format 24
- Asynch Prediv = Value according to source clock
- Synch Prediv = Value according to source clock
- OutPut = Output Disable
- OutPutPolarity = High Polarity
- OutPutType = Open Drain */
RTCHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RTCHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
RTCHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
RTCHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RTCHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTCHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
while (1)
{
/* Turn On LED4 */
BSP_LED_On(LED4);
/* Insert 5 second delay */
HAL_Delay(5000);
/*## Configure the Wake up timer ###########################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 4s the WakeUpCounter is set to 0x242B:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~37KHz) = ~0,432 ms
Wakeup Time = ~4s = 0,432ms * WakeUpCounter
==> WakeUpCounter = ~4s/0,432ms = 9259 = 0x242B */
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, 0x242B, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
/* Turn OFF LED's */
BSP_LED_Off(LED1);
BSP_LED_Off(LED2);
BSP_LED_Off(LED4);
#ifdef UNDERDRIVE_MODE
__HAL_PWR_UNDERDRIVE_ENABLE();
#endif /* UNDERDRIVE_MODE */
/* Enter Stop Mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
/* Disable Wakeup Counter */
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
/* Configures system clock after wake-up from STOP: enable HSE, PLL and select
PLL as system clock source (HSE and PLL are disabled in STOP mode) */
SYSCLKConfig_STOP();
}
}
