RE: nrfjprog Not programming NRF52840 DK board

MJD093 — Wed, 17 Apr 2019 10:10:21 GMT

nrfjprog uses JLink to target and flash nRFs

If you use the command JLinkExe in a terminal (provided the command is callable from any directory), you can begin the manual connection to an nRF52. An example of this is shown below, I wrote .sh files like these to automate flashing our devices.

#!/bin/bash
JLinkExe << EOF
connect
NRF52832_XXAA
S
9600
r
h
g
qc
EOF

this should establish connection to a powered nRF52832 (try NRF52840_XXAA for the 840s). As this is for automated purposes its designed to run and exit once complete (simple device reset script), you need the manual approach.

JLinkExe

connect

NRF52840_XXAA

S

9600

From here you will see if connection ws established or not the Cortex. If it did connect try,

r

h

erase

loadfile yourhex.hex

r

h

g

All being well, you should have flashed your device.