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bl0rch

Beginner

Date of registration: Jun 29th 2015

Posts: 1

1

Monday, June 29th 2015, 9:15am

Unable to program nRF51422_xxAC due to low voltage error

Hello,
I have been trying for days to program my nrf51422 project without much success. I am using a Jlink programmer. I have connected VTREF, GND, SWCLK and SWDIO from the JLINK Edu to the project. However, when I go to program the board using nrfjprog or NRFGO, I get the error "ERROR: Low voltage detected at the target. Please make sure the device is properly supplied."
I have measured the voltage I am suppling from the project to the programmer and it reads 3.3 volts. Is this high enough? Is there anything additional I need to do?
I am following the pinout from the JLink datasheet.


Any tips are very much appreciated. I'm running out of ideas here!
Cheers, Nick

SEGGER - Erik

Super Moderator

Date of registration: Dec 20th 2011

Posts: 400

2

Tuesday, July 7th 2015, 10:49pm

Hi,

Can you please download and install the J-Link software and documentation package?
Now start J-Link Commander (JLink.exe) with the command line arguments below and share a screenshot of the entire output:
JLink.exe -device nRF51422_xxAA -if SWD -speed 1000

Quoted

I have measured the voltage I am suppling from the project to the programmer and it reads 3.3 volts. Is this high enough?
Yes.

- Erik