Hello,
I am trying to bring up SDMMC1 on an STM32H743 using ChibiOS 21.11.4 and I am completely stuck.
The same board and the same SD card work perfectly with STM32Cube HAL.
With ChibiOS, the SDMMC peripheral appears to be electrically dead.
- Symptoms:
* SDMMC1 registers are accessible and ...
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- Fri Jan 16, 2026 12:27 am
- Forum: STM32 Support
- Topic: STM32H743 SDMMC1 completely dead (no clock, no flags) on STM32H743
- Replies: 2
- Views: 3055