Two Instances of SPI

RE: Two Instances of SPI

zigenz — Thu, 19 Jul 2018 16:15:12 GMT

In your visualiser, can you confirm that spi_config1.ss_pin is being asserted when you try to communicate on the SPI bus to peripheral 1? Also, have you tried initiating SPI channel 0 with the SPI channel 1 config to confirm you don't have any wiring errors?

RE: Two Instances of SPI

drewfowler17 — Thu, 19 Jul 2018 15:50:10 GMT

I appreciate the replies. I have been watching it in real time with an analog discovery. The problem is definitely in the code, as it works with the 0 instance. Haven't tested it much since I posted this, but will keep looking into the SPI Master docs.

Thank you all.

RE: Two Instances of SPI

zigenz — Thu, 19 Jul 2018 15:20:32 GMT

Hi Drew,

I have successfully used two SPI channels on the nRF52832 using the method you mentioned (although haven't checked your code with a fine-toothed comb).

Being honest, you're going to struggle debugging this without a logic analyser. I use the Saleae Logic8 for this kind of stuff - it's excellent for protocol debugging (https://www.saleae.com/). Note I'm in no way affiliated with Saleae - a friend put me onto it and it's genuinely a well made product that doesn't break the bank (unlike most electronic test equipment).

Good luck!

- Z

RE: Two Instances of SPI

Martin Lesund — Thu, 19 Jul 2018 14:57:09 GMT

Hello Drew,

Have you followed the documentation for the SPI master driver ?

Also I would recommend that you hook up the signals to a logic analyzer to actually see what is happening in real-time.

RE: Two Instances of SPI

drewfowler17 — Thu, 05 Jul 2018 13:53:06 GMT

I am using 15.0.0 devzone.nordicsemi.com/.../1234.sdk_5F00_config.h

RE: Two Instances of SPI

Edvin — Wed, 04 Jul 2018 08:46:30 GMT

Hello,

What SDK version do you use, and could you send the sdk_config.h file that you are using?

BR,

Edvin