Is there any sample for spi based on nrf5340？

[sean]

Is there any sample for spi based on nrf5340？

[Didrik Rokhaug]

Hi.

There are no SPI samples that are created especially for the nRF5340.

However, both the spi_flash and spi_fujitsu_fram samples (in ncs/zephyr/samples/drivers) should work on the nRF5340 with a few modifications.

The spi_fujitsu_fram sample should work as long as an mb85rs64v is connected to SPI1.

The spi_flash sample will require you to add connect a flash chip that has a driver in Zephyr and add it to the device tree.

One of my colleagues has an SPI sample on his personal Github account: https://github.com/Rallare/fw-nrfconnect-nrf/tree/nrf9160_samples/samples/nrf9160/spi

While it was written for the nRF9160, it should work without any modifications on the nRF5340 (though the 53 might use different pins). Note that it has not been updated in a while, so it might not work on newer versions of NCS without some modifications.

Best regards,

Didrik

[sean]

Hi Didrik

Thank you. I tried your colleague's code on ncs v1.2.0,but there are still some errors that cannot be solved.

The transmission should be successful even without external spi equipment, so using nrf5340-pdk for test should be ok

When I try to run his code,it stopped at spi_transceive.

This is log

So I add spi_cs_control parameter to spi_cfg,but there are still some errors.

This is the modified code and configuration

6237.spi.zip

[sean]

The spi_fujitsu_fram sample has the same problem。

[Didrik Rokhaug]

Hi.

Turns out SPIM2 & 3 does not work on the nrf5340 (yet): https://infocenter.nordicsemi.com/index.jsp?topic=%2Ferrata_nRF5340_EngA%2FERR%2FnRF5340%2FEngineeringA%2Flatest%2Fanomaly_340_81.html&anchor=anomaly_340_81

Are you able to use SPIM1?

[sean]

Hi，Didrik

When I try to add spi0 to configuration, it always reports such an error.

[Didrik Rokhaug]

Do you get another window before that?

The problem is probably that UART0 is already used. As I said, they share the same peripheral on the nRF53, so only one of UART0, SPI0, and TWI0 can be enabled at the same time.

You also probably have to enable the SPI node in the device tree.