SPI clock not working on pin

RE: SPI clock not working on pin

Siddhesh — Wed, 14 Nov 2018 21:17:50 GMT

Thank you. We had looked at it and then decided on using P0.06 as SCK. The test code did not work on the custom board so tested it on the DK first. I'll recheck my stuff again on the custom board.

RE: SPI clock not working on pin

Fredrik — Wed, 14 Nov 2018 21:16:21 GMT

It should work fine on a custom design.

For reference, check out the nRF52840 product specification. "Table 2: QIAA pin assignments" lists all pins, their special purposes and alternate functions. As you can see, P0.06 is listed as General purpose I/O.

RE: SPI clock not working on pin

Siddhesh — Wed, 14 Nov 2018 21:10:18 GMT

Yes. That would make sense why it did not work on the DK.
This should not be an issue on a custom design right ?

RE: SPI clock not working on pin

Fredrik — Wed, 14 Nov 2018 19:49:37 GMT

Are you using the nRF52840 DK? If yes, then P0.06 is used by the UART connected to the interface MCU. See the nRF52840 DK user guide, chapter 6.6.