Missing radio on NRF52832

RE: Missing radio on NRF52832

Ekorre — Sun, 08 Jan 2017 17:37:48 GMT

Ouch, what a mistake. That is it. Again thank you!

I went with the Epson FA-128 10 ppm crystal and added a matching network in a new design. However since I replaced the oscillator on the current board everything works as far as proof of concept for the software (I know I am pushing my luck though).

RE: Missing radio on NRF52832

Hung Bui — Fri, 06 Jan 2017 09:33:20 GMT

The CSTCW32M0X51-R0 doesn't seem very right. The Frequency tolerance of 0.5% wouldn't meet the minimum requirement for Radio activity which is 60ppm.

RE: Missing radio on NRF52832

Ekorre — Thu, 05 Jan 2017 20:22:26 GMT

Hello and thank you for the comments!

I did discover the radio_test demo and really appreciate that you can select just about any pin as serial interface (as a feature of NRF) and control said demo.

I have to clarify. The application software was running like intended on the NRF52-DK board so I am loading the SD and app just fine.

Now to the good news. All seem to work and what made the difference was replacing the oscillator twice. Either I am junk at soldering or something else is up.

I use CSTCW32M0X51-R0 (PDF: www.murata.com/.../pdfdownloadapi as oscillator and cannot really find a reason not to. Is there one?

Something to bring home from this is the radio_test mentioned by Hung Bui above so I am marking that as the answer.

Again thanks!

RE: Missing radio on NRF52832

Hung Bui — Thu, 05 Jan 2017 13:43:46 GMT

Using a copper wire as an antenna usually helps to get some signal even though it's not tuned and matched. There must be something else is wrong. As Wojtek asked, have you made sure the code run correctly, no assert ? Which code did you use ? If you test with BLE, you need to flash the softdevice first. You can also test with the example\peripheral\radio example or the ESB example in our SDK to verify the operation of the radio, you have full control over the RF channel you want to use there.

If it doesn't work, please upload your schematic, layout and a photo of the board.

RE: Missing radio on NRF52832

Wojtek — Wed, 04 Jan 2017 17:27:30 GMT

Does the code run correctly? Are you able to debug?