Creating own custom-board from nrf52840-DK

RE: Creating own custom-board from nrf52840-DK

Adrian1504 — Fri, 30 Aug 2024 09:13:06 GMT

Perfect! Thank you much for your help and guidance Mathiaso!

Best regards,

Adrian Lopez

RE: Creating own custom-board from nrf52840-DK

mathiaso — Fri, 30 Aug 2024 07:41:08 GMT

The PS of the nRF5340 DK has a graphical explanation showing the necessary connections to program an external board with custom connections. When connected like this, you should be able to program it as normal through VS code.

RE: Creating own custom-board from nrf52840-DK

Adrian1504 — Thu, 29 Aug 2024 14:24:44 GMT

Hi Mathias,

Thank you so much for your answer, I think I understand now. For programming it then I should connect the SWD lines to the nrf52840DK and then program through VS as if I was programming the DK?

Again, thank you so much for your answers and patience!

Best regards,
Adrian Lopez

RE: Creating own custom-board from nrf52840-DK

mathiaso — Mon, 26 Aug 2024 13:45:28 GMT

[quote user="Adrian1504"]I see that If I choose the QFAA QFN48 package (Because it would be the easier to solder) I can not use USB, right?[/quote]

That is correct, as the USB pins are not routed in the QFN48 package.

[quote user="Adrian1504"]Then, how would the programming of the device take place?[/quote]

You use the SWD lines and a debugger. If you have a DK, e.g., an nRF52840 DK, this can be used as the debugger.

[quote user="Adrian1504"]Also, with the configuration for this package, I can use SPI, right? I do not have to add any other component to be able to read from my sensor?[/quote]

Yes, you can use SPI with this package as well. Avoid using the pins marked with "Standard drive, low frequency I/O only" in the pin assignments list for SPI. You shouldn't have to add any extra components, as long as the sensor is SPI compatible and its datasheet doesn't specify anything about extra components.

Best regards,
Mathias

RE: Creating own custom-board from nrf52840-DK

Adrian1504 — Thu, 22 Aug 2024 15:15:15 GMT

Hi Mathias,

Thank you so much for your answer! It has been really helpful.

I see that If I choose the QFAA QFN48 package (Because it would be the easier to solder) I can not use USB, right? Then, how would the programming of the device take place?

Also, with the configuration for this package, I can use SPI, right? I do not have to add any other component to be able to read from my sensor?

Best regards,
Adrian Lopez

RE: Creating own custom-board from nrf52840-DK

mathiaso — Mon, 19 Aug 2024 14:08:50 GMT

Hi, Adrian.

I think it might be a better idea for you to look at the reference circuitry and then the reference layout, which is downloadable from here, that belongs to the configuration you choose.

Best regards,
Mathias