Programming external target using nRF54L15 DK

[Sai]

I am trying to external target using the nRF54L15DK and I get the following error.

Error: Failed with exit code 1. Failed to device info one or more devices: * 1057767167: [Probe] Device error: Failed to write DebugPort register 2: Unknown Error in J-Link DLL (error code =-1), code: Generic. Message: Operation device-info failed, [Probe] Device error: Failed to write DebugPort register 2: Unknown Error in J-Link DLL (error code =-1).

My external target is an Ezurio nRF54L15 module. I have connected the following pins using a standard 10 pin SWD connector .

• Reset
• VDD
• GND
• SWDIO
• SWDCLK
• Pin 3 is connected to ground. 

I have programmed VOUT 1 to 3.2V. My target voltage is 3.25 V

[Simonr]

HI

Can you confirm the target board is powered with a voltage between 1.8 and 3.6V, and that VDDIO on the custom board also is within this range? Also confirm that you have connected the board to the correct debug header on the DK. If it still doesn't work I think we need to do a HW review to confirm the module schematic and layout looks correct.

Also, what version of the nRF54L15 DK do you have. What does it say on the sticker that starts with PCA10156?

Best regards,

Simon