Trouble Connecting JTAG to ESP32-Solo-1

[Lachlan]

I'm having trouble getting JTAG to connect to an ESP32-Solo-1. I had this working a couple of years ago (around 2–3 years back), but I can't seem to find the correct settings to get it working again.

From the output console, it looks like it's still trying to connect to a second core, even though my settings.json file specifies the target as "target/esp32-solo-1.cfg". The application runs fine when uploaded over UART, so I believe the menu configuration is correct (unicore is enabled).

Here’s my current setup:

OS: Windows 11
IDE: VS Code
ESP-IDF Version: v5.4.1
Debugger: ESP-Prog
Has anyone run into this issue recently or have suggestions on what might be misconfigured?

Thanks in advance!

My settings.jason file:

Code: Select all

{
  "C_Cpp.intelliSenseEngine": "default",
  "idf.espIdfPathWin": "c:\\Espressif\\esp\\v5.4.1\\esp-idf",
  "idf.pythonInstallPath": "c:\\Espressif\\.espressif\\tools\\idf-python\\3.11.2\\python.exe",
  "idf.openOcdConfigs": [
    "interface/ftdi/esp32_devkitj_v1.cfg",
    "target/esp32-solo-1.cfg"
  ],
  "idf.toolsPathWin": "c:\\Espressif\\.espressif",
  "idf.customExtraVars": {
    "IDF_TARGET": "esp32"
  },
  "idf.flashType": "UART",
  "idf.portWin": "COM6"
}

And the Output from trying to start OpenOCD

Code: Select all

Open On-Chip Debugger v0.12.0-esp32-20241016 (2024-10-16-14:17)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html

debug_level: 2

adapter speed: 20000 kHz

Info : Listening on port 6666 for tcl connections

Info : Listening on port 4444 for telnet connections

Info : ftdi: if you experience problems at higher adapter clocks, try the command "ft
di tdo_sample_edge falling"
Info : clock speed 20000 kHz

Info : JTAG tap: esp32.tap0 tap/device found: 0x120034e5 (mfg: 0x272 (Tensilica), part: 0x2003, ver: 0x1)
Info : JTAG tap: esp32.tap1 tap
❌ /device found: 0xffffffff (mfg: 0x7ff (<invalid>), part: 0xffff, ver: 0xf)
Warn : JTAG tap: esp32.tap1       UNEXPECTED: 0xffffffff (mfg: 0x7ff (<invalid>), part: 0xffff, ver: 0xf)
Error: JTAG tap: esp32.tap1  expected 1 of 1: 0x120034e5 (mfg: 0x272 (Tensilica), part: 0x2003, ver: 0x1)
Error: Trying to use configured s
❌ can chain anyway...
Error: esp32.tap1: IR capture error; saw 0x1f not 0x01
Warn : Bypassing JTAG setup events due to errors
Warn : [esp32] Unexpected OCD_ID = 00000000
Error: [esp32] Examination failed
Warn : target esp32 examination failed
Info : [esp32] starting gdb server on 3333

Info : Listening on port 3333 for gdb connections

[Lachlan]

I have also tried running:

Code: Select all

openocd -c 'set ESP_ONLYCPU 1' -f interface/ftdi/esp32_devkitj_v1.cfg -f target/esp32-solo-1.cfg 

to try and force single core but I still get the same error message.
Do the "JTAG tap: esp32.tap0" and "JTAG tap: esp32.tap1" refer to the seperate cores or am I looking for a solution in completly the wrong place?

[Lachlan]

There is a patch for it.
https://github.com/espressif/openocd-esp32/issues/367