nRF52832: Why does MOSI stay high after transmitting any byte >7F ?

RE: nRF52832: Why does MOSI stay high after transmitting any byte >7F ?

landon.ivy — Thu, 13 Jun 2024 12:01:50 GMT

Hi, did you ever figure out how to fix this?

awneil — Thu, 06 Dec 2018 13:20:54 GMT

No - this is just taking the Nordic example as-is.

In the OP, I'd changed the buffer size to 1 just to make it easier to see.

I get exactly the same effect if I make no code modifications at all, and just edit the last byte of the buffer in the debugger

Jørgen Holmefjord — Thu, 06 Dec 2018 12:11:27 GMT

Hi,

Have you tried transmitting data on SPI using registers directly instead of the driver, to see if that makes any difference?

The suggestion from agus.uy sounds reasonable.

Best regards,
Jørgen

agus.uy — Wed, 05 Dec 2018 18:29:56 GMT

Seems like it's getting ready to send another byte (same one), loading the MSB.