void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
#if defined(MCU_STOP_MODE)/*if MCU is in stop mode*/
/* Clear Wake Up Flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
/* 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) */
SystemClockConfig_STOP();
#endif
#if defined(MCU_SLEEP_MODE)
/* Resume Tick interrupt if disabled prior to sleep mode entry*/
HAL_ResumeTick();
#endif
if (GPIO_Pin == USER_BUTTON_PIN)
{
sensors_changed(&button_sensor);
}
#ifdef SPWF04
if(GPIO_Pin == WIFI_SPI_EXTI_PIN) {
WIFI_SPI_IRQ_Callback();
}
#endif
}
/**
* @brief GPIO EXTI Callback function
* Handle remote-wakeup through key button
* @param GPIO_Pin
* @retval None
*/
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if (GPIO_Pin == KEY_BUTTON_PIN)
{
if ((((USBD_HandleTypeDef *)hpcd.pData)->dev_remote_wakeup == 1)&&
(((USBD_HandleTypeDef *)hpcd.pData)->dev_state == USBD_STATE_SUSPENDED))
{
if ((&hpcd)->Init.low_power_enable)
{
/* Reset SLEEPDEEP bit of Cortex System Control Register */
SCB->SCR &= (uint32_t)~((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
SystemClockConfig_STOP();
}
/* Ungate PHY clock */
__HAL_PCD_UNGATE_PHYCLOCK((&hpcd));
/* Activate Remote wakeup */
HAL_PCD_ActivateRemoteWakeup((&hpcd));
/* Remote wakeup delay */
HAL_Delay(10);
/* Disable Remote wakeup */
HAL_PCD_DeActivateRemoteWakeup((&hpcd));
/* change state to configured */
((USBD_HandleTypeDef *)hpcd.pData)->dev_state = USBD_STATE_CONFIGURED;
/* Change remote_wakeup feature to 0*/
((USBD_HandleTypeDef *)hpcd.pData)->dev_remote_wakeup=0;
}
}
}
/**
* @brief HAL_PCDEx_LPM_Callback : Send LPM message to user layer
* @param hpcd: PCD handle
* @param msg: LPM message
* @retval HAL status
*/
void HAL_PCDEx_LPM_Callback(PCD_HandleTypeDef *hpcd, PCD_LPM_MsgTypeDef msg)
{
switch ( msg)
{
case PCD_LPM_L0_ACTIVE:
if (hpcd->Init.low_power_enable)
{
SystemClockConfig_STOP();
/* Reset SLEEPDEEP bit of Cortex System Control Register */
SCB->SCR &= (uint32_t)~((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
}
__HAL_PCD_UNGATE_PHYCLOCK(hpcd);
USBD_LL_Resume(hpcd->pData);
break;
case PCD_LPM_L1_ACTIVE:
__HAL_PCD_GATE_PHYCLOCK(hpcd);
USBD_LL_Suspend(hpcd->pData);
/*Enter in STOP mode */
if (hpcd->Init.low_power_enable)
{
/* Set SLEEPDEEP bit and SleepOnExit of Cortex System Control Register */
SCB->SCR |= (uint32_t)((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
}
break;
}
}
/**
* @brief GPIO EXTI callback
* @param uint16_t GPIO_Pin
* @retval None
*/
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
#if defined(MCU_STOP_MODE)/*if MCU is in stop mode*/
/* Clear Wake Up Flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
/* 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) */
SystemClockConfig_STOP();
#endif
#if defined(MCU_SLEEP_MODE)
/* Resume Tick interrupt if disabled prior to sleep mode entry*/
HAL_ResumeTick();
#endif
/* Initialize LEDs*/
RadioShieldLedInit(RADIO_SHIELD_LED);
//BSP_LED_Init(LED2);
if (GPIO_Pin == USER_BUTTON_PIN)
{
sensors_changed(&button_sensor);
}
}
/**
* @brief SOF callback.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
{
if ((hpcd->Init.low_power_enable)&&(remotewakeupon == 0))
{
SystemClockConfig_STOP();
/* Reset SLEEPDEEP bit of Cortex System Control Register */
SCB->SCR &= (uint32_t)~((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
}
USBD_LL_Resume(hpcd->pData);
remotewakeupon = 0;
}
void RtcRecoverMcuStatus( void )
{
//Disable IRQ while the MCU is not running on HSE
__disable_irq( );
SystemClockConfig_STOP();
TimerHwInit();
SPI1_Init();
SX1276IoInit();
SX1276Q1CtrlInit();
__enable_irq( );
}
/**
* @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();
}
}
void OTG_HS_WKUP_IRQHandler(void)
#endif
{
if((&hpcd)->Init.low_power_enable)
{
/* Reset SLEEPDEEP bit of Cortex System Control Register */
SCB->SCR &= (uint32_t)~((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
SystemClockConfig_STOP();
/* Ungate PHY clock */
__HAL_PCD_UNGATE_PHYCLOCK((&hpcd));
}
#ifdef USE_USB_FS
/* Clear EXTI pending Bit*/
__HAL_USB_OTG_FS_WAKEUP_EXTI_CLEAR_FLAG();
#else
/* Clear EXTI pending Bit*/
__HAL_USB_OTG_HS_WAKEUP_EXTI_CLEAR_FLAG();
#endif
}
/**
* @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 LED3 */
BSP_LED_Init(LED3);
/* Configure the system clock @ 32 Mhz */
SystemClock_Config();
/* Configure the system Power */
SystemPower_Config();
while (1)
{
/* Insert 5 second delay */
HAL_Delay(5000);
/* Key button (EXTI_Line13) will be used to wakeup the system from STOP mode */
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);
/* 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) */
SystemClockConfig_STOP();
}
}
