Zephyr spi reading JEDEC ID of Winbond NOR flash failed

[snowuyl]

I use spi_write() and spi_read() API to read JEDEC ID of Winbond NOR flash. But results of spi_read() are always 0. Do you have any suggestions to debug this issue?

[Simonr]

Hi

I can't reproduce this if you're running it on a custom board I'm afraid, As I don't have these external flashes available on my end. Did you try changing the dpd and rdpd values in your flash device to higher values? 

You need to upload the full build log for us to see what the root cause of this build failure is.

Best regards,

Simon