About ejb068

ejb068 · 2023-11-15

Hi,I'm using a NUCLEO-L452RE and wanted to check out current in different low power modes.With only the basic pins configured, I can measure <7uA in Stop2. Not bad.using: HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);Problem I have is if I configure th...

ejb068 · 2023-11-24

I don't have confirmation on the correct procedure to implement before and after stop 2 low power mode. I have found that if I don't disable the UART/I2C/QSPI peripherals before this low power mode, the current consumption is ~600uA vs ~2.6uA when I ...

ejb068 · 2023-11-20

Hi Sarra, Any further advise? Is the correct procedure to enter stop mode 2 to set all un-needed pins to analog input before sleep, then set them back to their respective functions on wake-up? Or is there a better method?Thanks!

ejb068 · 2023-11-16

Hi Sarra, I tried as you suggested and as expected it does bring the current down to 2.6uA. However, all my peripherals are defined and initialized just before the "/* USER CODE BEGIN 2 */" in the "/* Initialize all configured peripherals */" section...

ejb068 · 2023-11-16

The GPIOs configured aren't causing the issue as the second example above leaves them as is and I can get to 2.6uA in stop2. I did make sure all GPIO input pins have a pull up or down as per application noteAN4899 "STM32 microcontroller GPIO hardware...

ejb068 · 2023-11-16

BTW, I will disable peripherals similar to this if needed, but want to understand if this is safe or what other considerations I may need to take into account.Also, I did check that it is not one specific peripheral causing the 600uA, they all contri...

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For STOP2, Is it necessary to disable unused peripherals?

Re: For STOP2, Is it necessary to disable unused peripherals?

Re: For STOP2, Is it necessary to disable unused peripherals?

Re: For STOP2, Is it necessary to disable unused peripherals?

Re: For STOP2, Is it necessary to disable unused peripherals?

Re: For STOP2, Is it necessary to disable unused peripherals?