Hi everyone,
I am encountering issues in sdcard initialization on my custom board.
I am getting SDMMC_FLAG_CTIMEOUT error in SD_PowerON once the first CMD8: SEND_IF_COND is sent.
Looking at signals and comparing with an identical custom board, you can see that the command is sent but no response. In first picture, send and response.
In second picture, only send.
Signals are got with oscilloscope on sdcard connector.
Any ideas on possible cause of problem?
Thank you
