STM32 MPUs Embedded software

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Resolved! STM32MP15x USART/UART Default Pins

Is stated on STM32MP157 datasheet's boot mode table that the MPU can be booted through UART: – USART2/3/6 and UART4/5/7/8 on default pins Nevertheless, I wasn't able to find which are the default pins for the UART interfaces, on the datasheet or refe...

Resolved! SD Card boot is not working, I get `SD_InitDetailedErrorDesc ( 0x0000001B )` when using the ROM Code Trace Analyzer. What does this mean?

I have a custom board with a STM32MP157AAB3 and I am trying to boot it with the SD card.   I have tested the SD card on a STM32MP157C-DK2 and it boots to Linux fine. When I probe the SD card lines, I can see the clock is toggling for a long time and ...