nrfjprog: cannot combine --reset with --program?

[Mahesh Venkitachalam]

I am following the Makefile provided by Nordic, but using --reset with --program seems to fail:

>nrfjprog --reset --program _build/nrf51422_xxac_s110.hex
ERROR: Two arguments were provided that cannot be combined. Use --help to read
ERROR: about the valid argument combinations.

But the example Makefile does combine the two options.

Here's the tool version I am using:

>nrfjprog --version
nrfjprog version: 7.5.1
JLinkARM.dll version: 4.98c

I am using the nRF51 SDK version 8.1.0 on Windows 8 and am using the nRF-DK.

What am I doing wrong?

Thanks

UPDATE:

I was not able to solve the problem, so I side-stepped it by installing Segger j-link on Windows. Works great. But the problem above persists, so I'll leave this question open.

[Susheel Nuguru]

It has changed and it is now not allowed to mix reset with programming the chip. I am not sure the reason behind this. You can just split your command and it should work.

nrfjprog --program _build/nrf51422_xxac_s110.hex
nrfjprog --reset

[Mahesh Venkitachalam]

Thanks. But doesn't that mean that the Nordic example Makefiles are broken? They combine the options.

[Susheel Nuguru]

Yes , they are broken, I'll create a bug for it. I hope that you can continue with your development with this modification in your scripts.

[Mahesh Venkitachalam]

Thanks. I've switched to segger jlink for this step. Is there anything nrfjprog does that jlink cannot do in the context of nRF-DK? It might be better for Nordic to just recommend jlink since it's cross-platform, unlike nrfjprog.

[Susheel Nuguru]

nrfjprog internally uses JLink dll but wraps a lot of useful and safe operations that are not present directly with Jlink. You can very easily write a script in Jlink and brick your device, nrfjprog does many checks that prevents unsafe operations. We recommend you to use JLink directly if you are sure of what you are doing.