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Merge pull request #3663 from helmut64/STM32L4_deepsleep_fix 

Fixed a problem that the STOP2 was falling back to STOP1
pull/3761/head
Sam Grove 2017-02-13 10:12:30 -06:00 committed by GitHub
parent d8151d7991 10bb94a365
commit e22f26ffa4
1 changed files with 14 additions and 7 deletions
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21
targets/TARGET_STM/sleep.c
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@ -52,15 +52,22 @@ void hal_deepsleep(void)
// Request to enter STOP mode with regulator in low power mode // Request to enter STOP mode with regulator in low power mode
#if TARGET_STM32L4 #if TARGET_STM32L4
if (__HAL_RCC_PWR_IS_CLK_ENABLED()) { int pwrClockEnabled = __HAL_RCC_PWR_IS_CLK_ENABLED();
HAL_PWREx_EnableLowPowerRunMode(); int lowPowerModeEnabled = PWR->CR1 & PWR_CR1_LPR;
HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
HAL_PWREx_DisableLowPowerRunMode(); if (!pwrClockEnabled) {
} else {
__HAL_RCC_PWR_CLK_ENABLE(); __HAL_RCC_PWR_CLK_ENABLE();
HAL_PWREx_EnableLowPowerRunMode(); }
HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI); if (lowPowerModeEnabled) {
HAL_PWREx_DisableLowPowerRunMode(); HAL_PWREx_DisableLowPowerRunMode();
}
HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
if (lowPowerModeEnabled) {
HAL_PWREx_EnableLowPowerRunMode();
}
if (!pwrClockEnabled) {
__HAL_RCC_PWR_CLK_DISABLE(); __HAL_RCC_PWR_CLK_DISABLE();
} }
#else /* TARGET_STM32L4 */ #else /* TARGET_STM32L4 */