ESP32 Forum

Posted: **Wed Nov 22, 2017 4:24 pm**

Is there any way to use a JTAG debugger on WROOM32 while running a code that uses an SD card connected on a 4-bit SDIO?

Thanks!

Posted: **Thu Nov 23, 2017 6:07 am**

No, the pins of JTAG and SDMMC interfaces overlap, so these two can not be used at the same time.

JTAG debug with SD card