Can't make flash.

RE: Can't make flash.

Martin Lesund — Mon, 20 Aug 2018 06:22:32 GMT

Hi Jerome,

First I would like you to test your DK with a USB you are 100% sure that can transfer data.

I see that you are using the "Jaybird" cable which for my understanding is used to charge the "jaybird headset". (I think you have a "charge-only" cable)

Often such micro USB cables used to charge different products are missing the data lines, so they can only be used to power different devices.

So if you have a smartphone that uses a micro USB cable, they are more likely to have the data lines as well.

If that is not the case, I would suggest you to go through this list.

RE: Can't make flash.

Jerome — Sun, 19 Aug 2018 17:36:37 GMT

Hello,

1. I noticed in the toolchain folder I didn't have certain files listed in the folders. The posix was changed, however I noticed that in tutorials it shows GNU_PREFIX := and in my posix I have GNU_PREFIX ?=

2. I was under the impression that once set the $PATH for nrfjprog it could be accessed from anywhere. When I type in nrfjprog in the terminal I do get the full command menu listed, same with mergehex.

3. I haven't tried that one yet.

4. Yes the hex file in the build folder for the blinky example does exist there.

RE: Can't make flash.

dewid2 — Sun, 19 Aug 2018 09:47:56 GMT

I also had some problems setting up the toolchain, and while I did not encounter exactly your problem, it might help to suggest some of the unusual things I had to do to set it up (on linux):

1. did you also change the GNU_PREFIX in the Makefile.posix?

GNU_PREFIX ?= arm-none-eabi

2. to be sure you can create a link to nrfjprog in your systems binary folder.

3. probably also some library issues. during my installation i found this post:

[quote userid="5263" url="~/f/nordic-q-a/9937/nrfjprog-wants-jlinkarm-dll-on-linux/36873"]Adding the libjlinkarm.so to /usr/lib can be done with ln command; Enter /usr/lib, type: > ln -s {/path/to/segger-lib-file-name} {segger-lib-file-name}[/quote]

4. did you check that the file _build/nrf52832_xxaa.hex inside your local folder really exists?

just some ideas, good luck with it.