JLink can't connect to MIMXRT1010-EVK

[Elmi77]

I'm trying to connect to a MIMXRT1010-EVK board via the J55 JTAG debug-port using a JLink debug probe but miserably fail. MCUXpresso always gives me an error about "can't connect". That's what the console shows:

SEGGER J-Link GDB Server V7.66e Command Line Version

JLinkARM.dll V7.66e (DLL compiled Jun 28 2022 15:31:00)

Command line: -nosilent -swoport 2332 -select USB=260xxxxxx -telnetport 2333 -singlerun -endian little -noir -speed auto -port 2331 -vd -device MIMXRT1011DAE5A -if SWD -halt -reportuseraction
-----GDB Server start settings-----
GDBInit file:                  none
GDB Server Listening port:     2331
SWO raw output listening port: 2332
Terminal I/O port:             2333
Accept remote connection:      localhost only
Generate logfile:              off
Verify download:               on
Init regs on start:            off
Silent mode:                   off
Single run mode:               on
Target connection timeout:     0 ms
------J-Link related settings------
J-Link Host interface:         USB
J-Link script:                 none
J-Link settings file:          none
------Target related settings------
Target device:                 MIMXRT1011DAE5A
Target interface:              SWD
Target interface speed:        auto
Target endian:                 little

Connecting to J-Link...
J-Link is connected.
Device "MIMXRT1011XXX4A" selected.
Firmware: J-Link V10 compiled Nov  2 2021 12:14:50
Hardware: V10.10
S/N: 260112980
OEM: SEGGER-EDU
Feature(s): FlashBP, GDB
Checking target voltage...
Target voltage: 3.34 V
Listening on TCP/IP port 2331
Connecting to target...
$$UserActionStart$$: Terms of use
$$UserActionEnd$$: Terms of use
ERROR: Could not connect to target.
Target connection failed. GDBServer will be closed...Restoring target state and closing J-Link connection...
Shutting down...
Could not connect to target.
Please check power, connection and settings.

The orientation of the 10-pin connector at the J55 is correct (when I use the reverse connection, JLINK complains about the rest-pin havin an unexpected state). The board is powered via USB and this is working as a green LED is lit. For conversion from the JLink-connector to the tiny 10-pin connector of the board I use this adaptor:

So...any idea what could go wrong here?

Thanks

[_Leo_ · Accepted solution]

Thank you so much for your interest in our products and for using our community.

For i.MX RT1010, SWD is the default debug interface, not the JTAG, so when you connect the board, you need to use the SWD instead of the JTAG.

On the other hand you can change the DAP configuration to works in JTAG mode by programming of e-FUSEs, for that you can do it either with MCUXpresso Secure Provisioning Tool or with NXP MCU Boot Utility. Just keep in mind that the fuse burning process is irreversible.

Hope it helps you. Please let me know if you have more questions about it.

Have a nice day!