About rk_iot

rk_iot · 2025-03-10

Hello,on the STM32H7S78-DK board only USB2 (=USB-FS) can be used to connect the board to a PC and flash the firmware via USB-DFU because only PM11 and PM12 are supported by the internal USB-DFU bootloader. Is there a way to modify the board or to cre...

rk_iot · 2025-03-06

Hello,in all examples for the STM32H7S78-DK - including the TouchGFX applications - the frequency for the external APS256XXN-OBR-BG PSRAM is set to 200 MHz:extmem_list_config[1].PsramObject.psram_public.FreqMax = 200 * 1000000u; But in the datasheet ...

rk_iot · 2025-02-24

Hello,we are experiencing RAM corruption when running an application in external RAM when setting a breakpoint while debugging.The issue can be reproduced using following configuration:1. Open example STM32Cube_FW_H7RS_V1.1.0\Project\STM32H7S78-DK\Te...

rk_iot · 2024-07-18

Hallo,we are using STM32H735G-DK boards and wondering whether unaligned access of memory mapped HyperRAM should be generally possible or not.In the errate sheet for the STM32H735https://www.st.com/resource/en/errata_sheet/es0491-stm32h72xx73xx-device...

rk_iot · 2024-04-25

Hi,we are looking for the source code of the TouchGfx Demo which is installed on the STM32H735G-DK Eval Board.We found the repository but link the folder to the TouchGfx Demonstration is not available any more:https://github.com/STMicroelectronics/ST...

rk_iot · 2025-03-14

Hello @Dor_RH thank you for further investigating the issue, we are sure that this will help many developers suffering from the same problem.Best regardsrk_iot

rk_iot · 2025-03-13

@matt-crc I think the errata should not apply, as long as you are not connecting any low-speed devices to the hub. What we saw is that the hub gets disconnected when approaching the board while being electrostatically charged. Whenever I stood up fro...

rk_iot · 2025-03-12

Hello @Dor_RH ,we are a team of experienced STM32 software developwers and are really sure that we correctly identified the issue. To make it more clear, we've included another version of main.c which will turn on the red LED LD2 when an RAM corrupti...

rk_iot · 2025-03-12

Hello @Dor_RH the RAM corruption also happens without any modifications in main.c. The modifications in main.c were only made to detect the RAM corruption, by permanently checking the crc32 of the external RAM section. The external RAM corruption is ...

rk_iot · 2025-03-11

Hello @Saket_Om are there any updates for the internal ticket number 204247 on this issue or will you post in this forum, if there is an update? Thank you and best regardsrk_iot

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STM32H7S78-DK - Using USB-C for DFU-Bootloader and USB-HS host

STM32H7S78-DK examples exceed external RAM chip APS256XXN-OBR-BG max speed

STM32H7S78-DK xspi external RAM corruption when using Template_LRUN example

STM32H735G-DK: Is unaligned HyperRAM memory access possible in memory mapped mode?

Source Code of TouchGfx Demo on STM32H735G-DK Eval Board

Re: STM32H7S78-DK xspi external RAM corruption when using Template_LRUN example

Re: H7 USB devices Errata

Re: STM32H7S78-DK xspi external RAM corruption when using Template_LRUN example

Re: STM32H7S78-DK xspi external RAM corruption when using Template_LRUN example

Re: STM32H7S78-DK xspi external RAM corruption when using Template_LRUN example