SPI List: RXD.PTR incrementing too much

RE: SPI List: RXD.PTR incrementing too much

Cyril — Fri, 27 Apr 2018 09:22:17 GMT

It's working now as far as I just print RXD.PTR value, I couldn't explain first but digging into the issue, I can see that when I'm debugging the values are wrong.
I added a breakpoint using NRF_BREAKPOINT_COND in the SPI event handler, when I have 3 samples. Looking at RXD.PTR, I still have random values...
In my case, PPI redirects GPIOTE to SPI every 4ms. Is it possible that the debugger is lagging so that the registers have changed by the time it really stops?

RE: SPI List: RXD.PTR incrementing too much

Cyril — Wed, 25 Apr 2018 12:18:29 GMT

I'm writing a project from the PPI project. Will send it to you if I can reproduce the bug. I'm gonna try to use the button (GPIOTE) to read the Flash with known values, using SPI.

RE: SPI List: RXD.PTR incrementing too much

FormerMember — Wed, 25 Apr 2018 10:48:07 GMT

Unfortunately, I don't think any of the examples use SPI list along with PPI..

RE: SPI List: RXD.PTR incrementing too much

Cyril — Tue, 24 Apr 2018 12:15:16 GMT

Is there any example that uses SPI List along PPI?
I'm gonna try to set up a project using SPI with PPI triggered via a button on the PCA10056 to see if the problem occurs.

RE: SPI List: RXD.PTR incrementing too much

FormerMember — Tue, 24 Apr 2018 10:47:35 GMT

Do you have a small sample code I can use to reproduce the problem?

Do you see the same problem with the example in the SDK?