SPI does not work on nRF52832

RE: SPI does not work on nRF52832

Jørgen Holmefjord — Fri, 19 Jun 2020 09:35:36 GMT

If it's not connected to anything, I would not expect any activity on MISO pin. The SS pin should go low before the transfer starts, and then high after the transfer is completed.

If SCK and MOSI pins toggle, it sounds like it is working as it should.

RE: SPI does not work on nRF52832

mamorudeta — Fri, 19 Jun 2020 09:26:48 GMT

Hi, Jørgen Holmefjord

Thankyou for your reply.

I'm currently running the sample on one board with no connections to anywhere.

I set up the pins as follows.

    spi_config.ss_pin   = 29;
    spi_config.miso_pin = 2;
    spi_config.mosi_pin = 3;
    spi_config.sck_pin  = 4;

If I let the sample run, at least the oscilloscope will respond to the SCK and MOSI pins. I was thinking about it.

However, I didn't get any response, so I asked the question.

RE: SPI does not work on nRF52832

Jørgen Holmefjord — Fri, 19 Jun 2020 08:39:50 GMT

Hi,

[quote user=""]but it doesn't seem to respond to all the pins[/quote]

Can you be a bit more specific? Which pins are not showing any activity? A logic-trace of the bus will be great.

Best regards,
Jørgen