Firmware flashing using JLinkExe

RE: Firmware flashing using JLinkExe

Thomas — Sun, 20 Mar 2016 13:26:32 GMT

There is a little better: copy file 99-jlink.rules (part of the downloaded package) into /etc/udev/rules.d/ and it should work like a charm

RE: Firmware flashing using JLinkExe

Mahesh Venkitachalam — Mon, 13 Jul 2015 04:16:05 GMT

This link tells you how to setup a jlink script via Makefile: devzone.nordicsemi.com/.../

RE: Firmware flashing using JLinkExe

sidekick — Sat, 11 Jul 2015 12:48:01 GMT

Thanks a ton @PrithviRaj Narendra for the detailed information. You also provided information about flashing softdevice. So far, I've been using nRFStudio on Windows to flash Softdevice. I'll soon try what you have suggested.

RE: Firmware flashing using JLinkExe

FormerMember — Fri, 10 Jul 2015 21:51:36 GMT

If you see the datasheet w4 4001e504 1 means that 1 is written to the NVMC Config register, meaning write is enabled to the flash memory. This is necessary to write the binary to the flash by JLink.

If you use a SoftDevice, the location that you flash the binary that you compile is at the address that you mentioned. Without Softdevice the binary must be flashed at location 0.

Overall, with Softdevice follow the steps below:

First you need to extract the uicr part and the rest of binary from the softdevice hex file. So run these two commands

[path to the toolchain]/arm-none-eabi-objcopy -Iihex -O binary --remove-section .sec3 [softdevice.hex] _mainpart.bin
[path to the toolchain]/arm-none-eabi-objcopy -Iihex -O binary --only-section .sec3 [softdevice.hex] _uicr.bin

Replace text in [] with appropriate paths.

Next flash these binaries in the appropriate location. For this with JLink

Set device to nrf51822
Set speed to 1000 (or any other that works)
w4 4001e504 1
loadbin [path]/_mainpart.bin 0
loadbin [path]/_uicr.bin 0x10001000 (I wonder why this address ;) )
loadbin [path]/_your_binary.bin 0x16000
r
g

Making this a script for JLink is convenient. Even better is letting your Makefile create this script and run it with your generated binary. Hope this helps.