nRF Connect Programmer can’t detect J-Link emulator (“No emulator with connection info” error)

[chris.c]

Hi 

I’m having trouble connecting to my nRF5340 dk using nRF Connect for Desktop (Programmer app). When I select the device, I get repeated errors like:

21:25:06.629	Initialising the bundled nrfutil device
21:25:08.724	Using the bundled core version for nrfutil device: 8.1.1
21:25:09.263	Using nrfutil-device version: 2.6.4
21:25:09.263	Using nrf-device-lib version: 0.17.35
21:25:09.263	Using nrfjprog DLL version: 10.24.2
21:25:09.263	Using JLink version: JLink_V7.94i
21:25:09.541	Getting serial port options from the persistent store for 001050032869.pc-nrfconnect-programmer
21:30:23.944	Selecting device with the serial number 001050032869
21:30:25.409	Error: Failed with exit code 1. Failed to device info one or more devices: * 1050032869: [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1050032869))' was found, code: Generic. Message: Operation device-info failed, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1050032869))' was found.
21:30:25.410	Selected device with the serial number 001050032869
21:30:25.412	Using nrfutil device to communicate with target via JLink
21:30:26.672	Reading readback protection status for Application core
21:30:26.672	Failed "reading readback protection status for application core". Error: code: 1, description: Generic, message: Batch task protection-get failed, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1050032869))' was found
21:30:26.868	Error: Failed with exit code 1. One or more batch tasks failed: - [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1050032869))' was found, code: Generic. Message: Batch task protection-get failed, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1050032869))' was found.
21:30:26.869	Error: Failed with exit code 1. One or more batch tasks failed: - [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1050032869))' was found, code: Generic. Message: Batch task protection-get failed, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1050032869))' was found.

Details:

• nrfutil-device version: 2.6.4

• nrf-device-lib version: 0.17.35

• nrfjprog DLL version: 10.24.2

• J-Link version: V7.94i

• Device serial number: 001050032869

• The issue occurs when trying to read device info or program firmware.

• The J-Link does not appear when I run nrfjprog --ids either.

• I’ve tried multiple USB cables and ports, reinstalled J-Link drivers, and restarted nRF Connect with no luck.

It seems like the on-board debugger (J-Link) may have stopped enumerating over USB.

Thanks,
Chris

[Håkon Alseth]

Hi,

 

Is there any activity on the green LED next to the USB-connector? Is it blinking, or a solid green colour?

I’ve tried multiple USB cables and ports, reinstalled J-Link drivers, and restarted nRF Connect with no luck.

Have you tried the same DK on multiple PCs, or tried the same USB cable on a confirmed working DK?

 

Kind regards,

Håkon

[chris.c]

Hi,

The led is solid green and the other 4 leds are looping through their flashing pattern.

i have 2 other 5340dk boards that all work perfectly fine so nothing to do with the pc or or usb cable 

thanks

chris

[Håkon Alseth]

Hi Chris,

 

chris.c said:

The led is solid green and the other 4 leds are looping through their flashing pattern.

This is good. This indicates that the debugger itself is enumerated.

Could you try to use either nrfjprog:

nrfjprog --recover -f nrf53

 

or nrfutil:

nrfutil install device && nrfutil device recover

 

And see if this helps?

 

Kind regards,

Håkon

[chris.c]

chris@DESKTOP-JBA3F46 MINGW64 /c/ncs/v2.9.0
$ nrfjprog --recover -f nrf53
ERROR: No debuggers were discovered.
NOTE: For additional output, try running again with logging enabled (--log).
NOTE: Any generated log error messages will be displayed.

chris@DESKTOP-JBA3F46 MINGW64 /c/ncs/v2.9.0
$ nrfutil install device && nrfutil device recover
bash: nrfutil: command not found

[Håkon Alseth]

Hi,

 

Is this a newer computer?

Could you re-install jlink and ensure that the box mentioned in this thread is checked?

 J-Link legacy USB driver required on Windows for some DK boards 

 

Kind regards,

Håkon

[chris.c]

Just to be clear I have 4 nrf5340 dks which all work perfectly fine on my computer. 
I have also bought one other with a similar fault where there has been a fault with the programmer out the box. 
I want confirmation that it is broken so that I can get a return booked through mouser. 

[Håkon Alseth]

Hi,

 

The reason why I am asking is because older firmware running on the nRF-based DK requires the legacy driver. Newer firmware does not require this legacy driver, thus they will enumerate as expected.

If anything has happened to your kit, it can potentially load an older failsafe firmware, which uses legacy usb driver. Thus, if you do not have this driver installed, it will only enumerate COM-port(s), and not the Segger debugger endpoint.

 

Kind regards,

Håkon

[chris.c]

that has now resolved the issue thanks.

The first comment was correct!

[Håkon Alseth]

Great to hear that the issue is now resolved. Hope you have a wonderful day!

 

Kind regards,

Håkon