Skip to content

Use more efficient mode for STM32L4XX stop mode #1097

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 8 commits into from
Jul 3, 2020
Merged

Use more efficient mode for STM32L4XX stop mode #1097

Changes from all commits
Commits
Show all changes
8 commits
Select commit Hold shift + click to select a range
a27e9e3
Use more efficient modes for STM32L4XX
angelnu Jun 12, 2020
c375611
Use PWR_STOPENTRY_WFI
angelnu Jun 12, 2020
0165b5f
Fix style errors
angelnu Jun 12, 2020
41b7cee
fix style
angelnu Jun 12, 2020
22114a1
fix style
angelnu Jun 12, 2020
32fce94
Fix style
angelnu Jun 12, 2020
c4bbb64
Allows to use LPUART1 in STOP2 mode
fpistm Jul 3, 2020
a6bf021
Fix astyle
fpistm Jul 3, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 14 additions & 2 deletions libraries/SrcWrapper/src/stm32/low_power.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -223,12 +223,24 @@ void LowPower_stop(serial_t *obj)
HAL_PWREx_EnableFastWakeUp();
#endif
#ifdef __HAL_RCC_WAKEUPSTOP_CLK_CONFIG
/* Select HSI as system clock source after Wake Up from Stop mode */
/* Select MSI or HSI as system clock source after Wake Up from Stop mode */
#ifdef RCC_STOP_WAKEUPCLOCK_MSI
__HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_MSI);
#else
__HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_HSI);
#endif
#endif

/* Enter Stop mode */
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
#if defined(STM32L4xx)
if ((WakeUpUart == NULL) || (WakeUpUart->Instance == (USART_TypeDef *)LPUART1_BASE)) {
// STM32L4xx supports STOP2 mode which halves consumption
HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
} else
#endif
{
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
}

/* Exit Stop mode reset clocks */
SystemClock_ConfigFromStop();
Expand Down