/**
* @brief Enter Stop mode
* @note This API is named HAL_PWR_EnterSTOPMode to ensure compatibility with legacy code running
* on devices where only "Stop mode" is mentioned with main or low power regulator ON.
* @note In Stop mode, all I/O pins keep the same state as in Run mode.
* @note All clocks in the VCORE domain are stopped; the PLL, the MSI,
* the HSI and the HSE oscillators are disabled. Some peripherals with the wakeup capability
* (I2Cx, USARTx and LPUART) can switch on the HSI to receive a frame, and switch off the HSI
* after receiving the frame if it is not a wakeup frame. In this case, the HSI clock is propagated
* only to the peripheral requesting it.
* SRAM1, SRAM2 and register contents are preserved.
* The BOR is available.
* The voltage regulator can be configured either in normal (Stop 0) or low-power mode (Stop 1).
* @note When exiting Stop 0 or Stop 1 mode by issuing an interrupt or a wakeup event,
* the HSI RC oscillator is selected as system clock if STOPWUCK bit in RCC_CFGR register
* is set; the MSI oscillator is selected if STOPWUCK is cleared.
* @note When the voltage regulator operates in low power mode (Stop 1), an additional
* startup delay is incurred when waking up.
* By keeping the internal regulator ON during Stop mode (Stop 0), the consumption
* is higher although the startup time is reduced.
* @param Regulator: Specifies the regulator state in Stop mode.
* This parameter can be one of the following values:
* @arg @ref PWR_MAINREGULATOR_ON Stop 0 mode (main regulator ON)
* @arg @ref PWR_LOWPOWERREGULATOR_ON Stop 1 mode (low power regulator ON)
* @param STOPEntry: Specifies Stop 0 or Stop 1 mode is entered with WFI or WFE instruction.
* This parameter can be one of the following values:
* @arg @ref PWR_STOPENTRY_WFI Enter Stop 0 or Stop 1 mode with WFI instruction.
* @arg @ref PWR_STOPENTRY_WFE Enter Stop 0 or Stop 1 mode with WFE instruction.
* @retval None
*/
void HAL_PWR_EnterSTOPMode(uint32_t Regulator, uint8_t STOPEntry)
{
/* Check the parameters */
assert_param(IS_PWR_REGULATOR(Regulator));
if(Regulator == PWR_LOWPOWERREGULATOR_ON)
{
HAL_PWREx_EnterSTOP1Mode(STOPEntry);
}
else
{
HAL_PWREx_EnterSTOP0Mode(STOPEntry);
}
}
/**
* @brief Enter Stop 1 mode
* @note This API is named HAL_PWR_EnterSTOPMode to ensure compatibility with legacy code running
* on devices where only "Stop mode" is mentioned. On STM32L4, Stop 1 mode and Stop modes
* are equivalent.
* @note In Stop 1 mode, all I/O pins keep the same state as in Run mode.
* @note All clocks in the VCORE domain are stopped; the PLL, the MSI,
* the HSI and the HSE oscillators are disabled. Some peripherals with the wakeup capability
* (I2Cx, USARTx and LPUART) can switch on the HSI to receive a frame, and switch off the HSI
* after receiving the frame if it is not a wakeup frame. In this case, the HSI clock is propagated
* only to the peripheral requesting it.
* SRAM1, SRAM2 and register contents are preserved.
* The BOR is available.
* The voltage regulator can be configured either in normal or low-power mode.
* @note When exiting Stop 1 mode by issuing an interrupt or a wakeup event,
* the HSI RC oscillator is selected as system clock if STOPWUCK bit in RCC_CFGR register
* is set; the MSI oscillator is selected if STOPWUCK is cleared.
* @note When the voltage regulator operates in low power mode, an additional
* startup delay is incurred when waking up from Stop 1 mode.
* By keeping the internal regulator ON during Stop 1 mode, the consumption
* is higher although the startup time is reduced.
* @param Regulator: Specifies the regulator state in Stop 1 mode.
* This parameter can be one of the following values:
* @arg PWR_MAINREGULATOR_ON: Stop 1 mode with regulator ON
* @arg PWR_LOWPOWERREGULATOR_ON: Stop 1 mode with low power regulator ON
* @param STOPEntry: Specifies if Stop 1 mode in entered with WFI or WFE instruction.
* This parameter can be one of the following values:
* @arg PWR_STOPENTRY_WFI:Enter Stop 1 mode with WFI instruction
* @arg PWR_STOPENTRY_WFE: Enter Stop 1 mode with WFE instruction
* @retval None
*/
void HAL_PWR_EnterSTOPMode(uint32_t Regulator, uint8_t STOPEntry)
{
HAL_PWREx_EnterSTOP1Mode(Regulator, STOPEntry);
}
