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how to access JTAG pins on ONE+ ?
Posted: Thu Jul 05, 2018 7:55 am
by aboaboit
Hi.
According to ESP32 docs, in order to use JTAG debug interfaces we need to access GPIO pins 12 to 15.
Is it technically possible to do so on the ONE+, hopefully via the XBee headers?
Thanks,
Andrea.
Re: how to access JTAG pins on ONE+ ?
Posted: Thu Sep 06, 2018 8:22 am
by fwh
If the pinout on this page,
https://gojimmypi.blogspot.com/2017/03/ ... esp32.html, is correct, then when you open up your ONE+ you'll see that GPIO pin 12 is floating. It hasn't been soldered to a pad.
Re: how to access JTAG pins on ONE+ ?
Posted: Wed Oct 03, 2018 12:49 pm
by wyatt
I have the same question. Any chance of using a USB debugger with GDB?
Re: how to access JTAG pins on ONE+ ?
Posted: Sat May 11, 2019 4:15 am
by aboaboit
After some studying of the schematics, I'd say this can't be done, period: pin IO15 is used to control GPS power (EN GPS1) so it's game over.
See
https://freematics.com/dl/FreematicsONE ... ematic.pdf