About MJack.1

MJack.1 · 2023-03-25

Hi, I'm using an STM32H755ZIQ Nucleo and migrating an old project in CubeMX 6.8.The RCC > supply source > PWR_DIRECT_SMPS_SUPPLY option has been removed from CubeMX, which was the default previously. I tried the two available options (External / LDO...

MJack.1 · 2022-01-05

Hi there,I am trying to read and write to an SD card using SDMMC2 from the M4 core on an STM32H755, using an NucleoH755-ZI and a custom SD card shield. The shield connections are simple, short traces, and as follows:SDMMC2_CK -> PD6SDMMC2_CMD -> PA0S...

MJack.1 · 2021-06-10

Hi all, I have a Cube IDE project generated for the STM32H755 Nucleo using Cube MX. I switched out the linker script for one that I have used in other projects with this board, basically just defining some sections for large buffers in RAM. I use the...

MJack.1 · 2021-04-30

Hi there, Get_SerialNum() in usbd_desc.c of the USB device drivers generated by CubeMX attempt to read the device UID to set the serial number.The M4 core does not have access to that memory region so the processor hard faults.Am I missing something ...

MJack.1 · 2021-04-28

Hi all, I'm editing this post because the forum doesn't allow me to delete it, and it might help someone else..I was having an issue where simply generating a default NUCLEO-H755ZI-Q project from the current latest CubeMX for Cube IDE and following t...

MJack.1 · 2023-05-06

I can confirm that if I set my clock to 400MHz, I get the full range of options for the SMPS.Thank you !

MJack.1 · 2023-03-31

Hi, I've attached the ioc file. I believe the migration was from 6.4 windows to 6.8 mac.Many Thanks

MJack.1 · 2023-03-27

Thanks for the reply - You're right, I can see the option if I start a new project.I guess then it's related to the fact that my project is migrated from a previous version of CubeMX?

MJack.1 · 2022-04-05

Thanks for the reply, I forgot to update this post and say that I did get it working in the end.The SDMMC2 clockDiv was configured to set the clock to 3.75MHz after SD initialisation. I wanted to run it slow to rule out PCB issues. I had to up it to...

MJack.1 · 2022-01-26

Thanks for the reply - I do not have any decoupling caps on the supply for the card. There is noise on the supply by the looks of it. I will try to minimise this noise and see if that helps. Thanks for the suggestion

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STM32H755 Nucleo and PWR_DIRECT_SMPS_SUPPLY

Unable to reliably use SD card with SDMMC2 using M4 core of NucleoH755-ZI

Issue with memory placement in Cube IDE generated project for STM32H755

STM32H755 M4 core unable to read UID and therefore USB drivers do not work

STM32H755 dual core debugging issue is related to BOOT_CM4 option byte

Re: STM32H755 Nucleo and PWR_DIRECT_SMPS_SUPPLY

Re: STM32H755 Nucleo and PWR_DIRECT_SMPS_SUPPLY

Re: STM32H755 Nucleo and PWR_DIRECT_SMPS_SUPPLY

Re: Unable to reliably use SD card with SDMMC2 using M4 core of NucleoH755-ZI

Re: Unable to reliably use SD card with SDMMC2 using M4 core of NucleoH755-ZI