Version 3.0.0 nRF52-DK not compatible with old software

RE: Version 3.0.0 nRF52-DK not compatible with old software

Simonr — Fri, 03 Mar 2023 12:55:08 GMT

Not after every power on, but after every time you program the device with an application disabling the APPROTECT register. You can see how to do so on page 74 of the nRF52832 PS.

Best regards,

Simon

RE: Version 3.0.0 nRF52-DK not compatible with old software

rayyen308 — Thu, 02 Mar 2023 14:19:47 GMT

Hi Simon,

Thanks! But it is not permanent. Do you have to do it every time after power on?

Best Regards,

Raymond

RE: Version 3.0.0 nRF52-DK not compatible with old software

Simonr — Thu, 02 Mar 2023 08:21:14 GMT

Please try doing calling nrfjprog --recover in your command line. This should do erase the flash of the SoC on the nRF52 DK, and also disable the readback protection.

Best regards,

Simon

RE: Version 3.0.0 nRF52-DK not compatible with old software

rayyen308 — Wed, 01 Mar 2023 19:44:10 GMT

Okay, the Readback protection on the device is enabled, causing the problem. Is there a way to disable this?

RE: Version 3.0.0 nRF52-DK not compatible with old software

rayyen308 — Wed, 01 Mar 2023 17:12:11 GMT

That only worked on one board :-( There's still a problem!

RE: Version 3.0.0 nRF52-DK not compatible with old software

rayyen308 — Wed, 01 Mar 2023 16:19:28 GMT

Hi Simon,

I figured it out. The boards are shipped with Flash in protected mode. So the python scripts could update the FW. But I was able to use the RSSI Viewer to reset the protection mode. Using the lower com port worked!

Thanks for your help!

Best Regards,

Raymond Yen

RE: Version 3.0.0 nRF52-DK not compatible with old software

Simonr — Wed, 01 Mar 2023 08:27:41 GMT

The two COM ports are a feature, as the new DKs have another debugger, we have an available VCOM for the debugger chip as well. You will have to change your script to choose the lower numbered VCOM port of the two to ensure that it runs on the onboard nRF52.

Best regards,

Simon

RE: Version 3.0.0 nRF52-DK not compatible with old software

rayyen308 — Tue, 28 Feb 2023 16:32:04 GMT

Hi Simon,

Thanks! I downloaded the newest version of nrfjprog, from the link that you provided.

Indeed, the rRF52-Dk dev board did enumerate as 2 com ports.

As shown in Device Manager:

Is this a feature or a BUG?

Best Regards,

Raymond Yen

Sr. R&D Engineering Technician

Neuspera Medical

Nordic Semiconductor Tech Support and Developer Community

Simonr

Have you installed the nRF Command Line tools on your computer, and if so, what version? I'm able to call nrfjprog --com just fine on my end.

Best regards,

Simon

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RE: Version 3.0.0 nRF52-DK not compatible with old software

Simonr — Tue, 28 Feb 2023 09:44:27 GMT

Have you installed the nRF Command Line tools on your computer, and if so, what version? I'm able to call nrfjprog --com just fine on my end.

Best regards,

Simon

RE: Version 3.0.0 nRF52-DK not compatible with old software

rayyen308 — Mon, 27 Feb 2023 15:46:42 GMT

Hi Simon,

nrfjprog --com is not a valid argument...

C:\Users\lab>nrfjprog --com
ERROR: An invalid argument was provided. Use --help for a list of valid
ERROR: arguments.

RE: Version 3.0.0 nRF52-DK not compatible with old software

Simonr — Mon, 27 Feb 2023 10:11:08 GMT

The newer DK revisions open multiple COM ports when connected to the computer. So what might be happening is that your test scripts are choosing the wrong COM port and that's why you're having trouble.

If you run nrfjprog --com you should see something like this, and VCOM0 should be the COM port to the nRF52832.

Best regards,

Simon