nRF52840 dongle connection loss with custom build

RE: nRF52840 dongle connection loss with custom build

Simonr — Tue, 09 Feb 2021 08:56:58 GMT

This ticket is almost 2 years old at this point, so if you require any support from our technical support, please create a ticket here on DevZone yourself where you describe your problem. Feel free to link to this case if you find it relevant.

It's also possible that Walther will get back to you of course.

Best regards,

Simon

RE: nRF52840 dongle connection loss with custom build

drc94 — Mon, 08 Feb 2021 21:22:51 GMT

Hi Walther!

Did you finally manage to solve it? I'm having the same problem as you.

Thanks!

RE: nRF52840 dongle connection loss with custom build

Simonr — Wed, 13 Mar 2019 14:12:20 GMT

Sorry for the misunderstanding Walther!

Which button are you pressing? The reset button on the side (Should reset the dongle and set it back to bootloader mode with a pulsating red light), or the SW1 on top? What is supposed to happen when you press the button? Please add the snippet of your code implementing the button.

Best regards,

Simon

RE: nRF52840 dongle connection loss with custom build

Walther — Wed, 13 Mar 2019 11:51:32 GMT

Hi Simon,

Thank you for your reply! I did this already, this was not my problem. As I wrote, in the program app I first selected the custom build hex file, then the S140 soft device hex file. Then I clicked on "write" and writing was successful. I could even connect to the dongle and control the LED. But as soon as I push the button on the dongle, it crashes. It seems to me that the dongle resets itself, as the connection is lost and the green LED for advertising is turned on again ~0.5seconds later.

With the pre-compiled example, I can push the button and the signal is transmitted to the iOS app.

Best Regards,

Walther

RE: nRF52840 dongle connection loss with custom build

Simonr — Wed, 13 Mar 2019 10:11:06 GMT

Hi Walther

You need to incclude the SoftDevice .hex in addition to the application .hex. The pre-compiled .hex files in the example projects contains both of those in one file, which is why you are able to build the examples but not your custom code.

See this case for instructions on how to do so.

Best regards,

Simon