GPY J-Link debugging

[Larsvb]

Hi all,
I'm trying to use a J-Link debugger with openocd to debug an external c-module i'm making for the gpy, but it doesn't give any output(JTAG scan chain interrogation failed: all zeroes). I hooked it up like this:
TDO -> pin 4
TCLK -> pin 10
TMS -> pin 23
TDI -> pin 9

My openocd setup is the following:

interface jlink 
transport select jtag
adapter_khz 200
set ESP32_RTOS none
set ESP32_FLASH_VOLTAGE 3.3
source [find $OPENOCD_SCRIPTS/target/esp32.cfg]

If I try running openocd -f debug.cfg it gives the following output:

Open On-Chip Debugger  v0.10.0-esp32-20190313 (2019-03-13-09:52)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
adapter speed: 200 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 V10 compiled Oct  5 2020 14:56:16
Info : Hardware version: 10.10
Info : VTarget = 3.328 V
Info : clock speed 200 kHz
Error: JTAG scan chain interrogation failed: all zeroes
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway...
Error: esp32.cpu0: IR capture error; saw 0x00 not 0x01
Warn : Bypassing JTAG setup events due to errors
Info : Listening on port 3333 for gdb connections

What can I try to make j-link find the gpy?
Thanks

[Larsvb]

I found the solution, I need to set the BTYPE=debug flag when building the firmware.