Connecting JTAG?

Posts: 13
Joined: Thu Mar 03, 2016 11:38 pm

Re: Connecting JTAG?

Postby Superkurt » Tue May 16, 2017 7:35 pm

If you need a step by step instruction how to setup an Olimex ARM-USB-OCD-H JTAG adapter under Ubuntu Linux with Eclipse integration, please take a look at my tutorial. I've also a ready to use virtual appliance for JTAG debugging: ... d-openocd/

Posts: 4
Joined: Thu Dec 14, 2017 6:35 pm

Re: Connecting JTAG?

Postby JoveToo » Fri Dec 15, 2017 12:47 pm

Did you get debugging running with these connections?

I am using the same usb jtag adapter and cable but a differetn ESP32 board and I get several OpenOCD errors, see this post

Posts: 1
Joined: Sun Apr 21, 2019 6:05 am

Re: Connecting JTAG?

Postby jeffhumph » Sun Apr 21, 2019 6:18 am


I connected jtag as shown in diagram ... wiring.jpg

Could you let me know how to run openocd with this?
when I run command bin/openocd -s share/openocd/scripts -f interface/ftdi/esp32_devkitj_v1.cfg -f board/esp-wroom-32.cfg
I get error
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()

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