Fixed a problem that the STOP2 was falling back to STOP1 #3663
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the LPR was not turned on. Now the deepsleep mode only needs 1.6uA instead of 10uA.
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Thanks Helmut to have found this 😄 |
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/morph test |
0xc0170
approved these changes
Feb 1, 2017
Result: SUCCESSYour command has finished executing! Here's what you wrote!
OutputAll builds and test passed! |
sg-
suggested changes
Feb 7, 2017
targets/TARGET_STM/sleep.c
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| int pwrClockEnabled = __HAL_RCC_PWR_IS_CLK_ENABLED(); | ||
| int lowPowerModeEnabled = PWR->CR1 & PWR_CR1_LPR; | ||
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| if (!pwrClockEnabled) |
targets/TARGET_STM/sleep.c
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| __HAL_RCC_PWR_CLK_ENABLE(); | ||
| HAL_PWREx_EnableLowPowerRunMode(); | ||
| HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI); | ||
| if (lowPowerModeEnabled) |
targets/TARGET_STM/sleep.c
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| HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI); | ||
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| if (lowPowerModeEnabled) |
targets/TARGET_STM/sleep.c
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| if (lowPowerModeEnabled) | ||
| HAL_PWREx_EnableLowPowerRunMode(); | ||
| if (!pwrClockEnabled) |
sg-
approved these changes
Feb 9, 2017
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/morph test |
Result: SUCCESSYour command has finished executing! Here's what you wrote!
OutputAll builds and test passed! |
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The LPR was not turned on when entering into STOP2. Now the deepsleep mode on the STM32L4 Nucleo board needs only 1.6uA instead of 10uA.
This is described in the STM RM0351 Reference manual, Section PWR registers BIT-14
Note: Stop 2 mode cannot be entered when LPR bit is set. Stop 1 is entered instead.
I am pretty happy that I figured this out.
Regards Helmut