Cant get nrfjprog.exe to work

[Elektrika]

I am trying to get the Device Format Update tutorial to go, but run into a problem while I am programming the using the nrfjprog routine, and the programmer aborts without warning or response. This is the build output:

> nrfjprog.exe --family NRF51 --program
> "C:\Users\tux\Documents\Dropbox\nRF51\nRF51_SDK\examples\dfu\bootloader\pca10028\dual_bank_ble_s110\arm5_no_packs\_build\nrf51422_xxac.HEX"
> Parsing hex file. Reading flash area
> to program to guarantee it is erased.
> Checking that the area to write is not
> protected. Programing device.

After this none of the LEDs come on, even if the board is reset.

Note that to get to this point it was necessary to use the Target Driver to erase the device, other wise we get this message:

> nrfjprog.exe --family NRF51 --program
> "C:\Users\tux\Documents\Dropbox\nRF51\nRF51_SDK\examples\dfu\bootloader\pca10028\dual_bank_ble_s110\arm5_no_packs\_build\nrf51422_xxac.HEX"
> Parsing hex file. Reading flash area
> to program to guarantee it is erased.
> ERROR: The area to write is not
> erased.

Any ideas?

Thanks Steve

[Michael Dietz]

Hi,

nrfjprog --family NRF51 --program "path_to_hex_file" --verify --chiperase

nrfjprog --family NRF51 --reset

This will erase the entire chip flash, program the hex file, verify it was programmed correctly. Then you need to reset the chip from nrfjprog.

Also you can try > nrfjprog --family --recover (if its still not working).

nrfjprog --help (to see man page)

If its still not working then make sure you have the most recent version of nrfjprog (download nRF5x-command-line-tools here: www.nordicsemi.com/.../nRF52832)