ESP32 Forum

Hi,

I am trying to use JTAG debugger with the Olimex ESP32-EVB.

I have followed the instructions for connection in this post https://www.olimex.com/forum/index.php?topic=6039.0
and also the espressif tutorial here https://docs.espressif.com/projects/esp ... p32-target

When I run bin/openocd -s share/openocd/scripts -f interface/ftdi/esp32_devkitj_v1.cfg -f board/esp-wroom-32.cfg
I get this output

Open On-Chip Debugger v0.10.0-esp32-20190313 (2019-03-13-09:59)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
none separate
adapter speed: 20000 kHz
Info : Configured 2 cores
esp32 interrupt mask on
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Error: no device found
Error: unable to open ftdi device with vid 0403, pid 6010, description '*', serial '*' at bus location '*'

Warn : Flash driver of esp32.flash does not support free_driver_priv()
Warn : Flash driver of irom does not support free_driver_priv()
Warn : Flash driver of drom does not support free_driver_priv()

Can you help troubleshooting this.

Thanks

Do you mean "JLink" debugger? Please check your arguments to OpenOCD, currently they say "interface/ftdi/esp32_devkitj_v1.cfg". If you aren't using ESP-WROVER-KIT, you need to use a different interface file. OpenOCD has one for Jlink.

Hi,

Yes it is JLINK, my mistake.

SO I have tried to run the command with jlink config file bin/openocd -s share/openocd/scripts -f interface/jlink.cfg -f board/esp-wroom-32.cfg

But I get some errors:

bin/openocd -s share/openocd/scripts -f interface/jlink.cfg -f board/esp-wroom-32.cfg
Open On-Chip Debugger v0.10.0-esp32-20190313 (2019-03-13-09:59)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
adapter speed: 20000 kHz
Info : Configured 2 cores
esp32 interrupt mask on
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : J-Link V9 compiled Oct 25 2018 11:46:07
Info : Hardware version: 9.40
Info : VTarget = 3.354 V
Info : Reduced speed from 20000 kHz to 15000 kHz (maximum).
Info : Reduced speed from 20000 kHz to 15000 kHz (maximum).
Info : clock speed 20000 kHz
Error: JTAG scan chain interrogation failed: all ones
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway...
Error: esp32.cpu0: IR capture error; saw 0x1f not 0x01
Warn : Bypassing JTAG setup events due to errors
Info : Listening on port 3333 for gdb connections

Have been researching about it but I am not able to get it solved

Thanks