About MD'Si.1

MD'Si.1 · 2023-07-18

Hi,I was following @Laurids_PETERSEN post on his low power ThreadX example (Part 2 ThreadX Low power Project ). I noticed his sample code, Snippet 11 on Enter Low Power mode configured the APB ENR, AHB ENR in RUN mode and then disabled all the periph...

MD'Si.1 · 2023-07-11

Hi,I am using ThreadX and the STM32L4A9 processor. When my application is ready to sleep I call an enter low power function. I followed sample code from ST Cube example which disables the GPIO CLKs and enters STOP Mode 1.//ENTER Low Power Mode/* Dis...

MD'Si.1 · 2022-10-13

I am trying to build a sample application that initializes a NOR Flash SPI chip and then exposes it over USB to a Windows computer as a removable mass storage device. I am using FileX and USBX. Host is STM32F429 (Nucleo 144 board) and Nor flash is ...

MD'Si.1 · 2022-09-06

My chipset is a STM32L4R9 and I have Nor Flash SPI chip used for file storage (FileX, LevelX, QuadSPI capable). My application is battery powered device. It wakes up reads some IO, logs to flash file system, sets RTC Wakeup timer and goes to sleep.Be...

MD'Si.1 · 2022-09-05

Hi,I am setting my RTC with a timestamp and when I read it back immediately I notice the hour setting is always off by 1 hour. I do not have daylight savings mode enabled on the RTC and I cannot understand why the hour setting is off. I thought the i...

MD'Si.1 · 2023-07-18

I found my issue was that HAL_RCC_DeInit() will disable all the interrupts so I had to re-enable my LPUSART interrupt again when exiting low power mode.

MD'Si.1 · 2023-07-18

Thanks for the link @Nikita91 !

MD'Si.1 · 2022-09-21

hi @MFARH.1,So it seems I have to perform fx_media_open on every wakeup. Do you know if there are ways (Compiler defines) to reduce the time it takes to perform the fx_media_open?I have not looked through all the code for fx_media_open but I assume ...

MD'Si.1 · 2022-09-21

Hi @MFARH.1 THank you for your help. Let me restate what I understood from your comment. I think you are saying that if I restore the clocks (PLL, MSI) after exiting low power mode I can avoid having to call fx_media_open after waking from sleep. Is...

MD'Si.1 · 2022-09-06

Thank you @Community member. That solved it!

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User Activity

How to configure AHB and APB for STOP Mode on STM32L4?

GPIO and peripheral intialization after exiting STOP Mode 1

USB Mass Storage device (FileX, UsbX) - Won't start on Windows 10

Is it necessary to call fx_media_close() before entering low power (STOP 1 mode ) on STM32L4R9

RTC setting off by one hour when setting the time

Re: GPIO and peripheral intialization after exiting STOP Mode 1

Re: GPIO and peripheral intialization after exiting STOP Mode 1

Re: Is it necessary to call fx_media_close() before entering low power (STOP 1 mode ) on STM32L4R9

Re: Is it necessary to call fx_media_close() before entering low power (STOP 1 mode ) on STM32L4R9

Re: RTC setting off by one hour when setting the time