Complications with SPI configuration

[Shaney]

Hi,

I am having issues with getting SPI up and running on my nrf52840-DK using NCS.  I've tried getting support about this in another ticket but it seems like it lead to a dead end https://devzone.nordicsemi.com/f/nordic-q-a/60878/configuring-spi0---dt_nordic_nrf_spi_spi_0_irq_0_priority-undeclared.

To summarize my issues:

1. SPI0 does not seem to work at all, configuring it either causes the build to fail due to "DT_NORDIC_NRF_SPI_SPI_0_IRQ_0_PRIORITY' undeclared" or the device bind fails.
2. I've managed to get SPI1, SPI2 and SPIM3 to working using a clean empty project but as soon as I try to implement them in my main project I get the following error:

[00:00:00.008,209] <err> os: ***** BUS FAULT *****
[00:00:00.008,209] <err> os:   Instruction bus error
[00:00:00.008,209] <err> os: r0/a1:  0x00000000  r1/a2:  0x20001ce8  r2/a3:  0x20001d00
[00:00:00.008,209] <err> os: r3/a4:  0x00000000 r12/ip:  0x20fe24f0 r14/lr:  0x00000ee1
[00:00:00.008,209] <err> os:  xpsr:  0x60000000
[00:00:00.008,209] <err> os: Faulting instruction address (r15/pc): 0x20fe24f0
[00:00:00.008,239] <err> os: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0
[00:00:00.008,239] <err> os: Current thread: 0x20000328 (unknown)
[00:00:00.942,657] <err> fatal_error: Resetting system

All other peripherals I've used so far, I2C, ADC, GPIO hasn't had any problems at all. Is there any guide at all on how to correctly configure multiple SPIM devices using the configuration manger in SES? I find it confusing why using the old deprecated SPI seems to work but not SPIM. Is there any extra steps required to get this working? I've been troubleshooting this error for weeks now and I am starting to run out of time.

I've attached my proj.conf that has been generated using the configuration tool in SES and my .overlay file.

5556.files.zip

Any help is appreciated, I am starting to lose hope.

[Shaney]

As an update incase anyone else struggles with the same issue. The problem seem to have been the .dts file. The one for nrf52840 devkit that is included in ncs, nrf52840_pca10056 states the following:

&spi0 {
	compatible = "nordic,nrf-spi";
	/* Cannot be used together with i2c0. */
	status = "okay";
	sck-pin = <27>;
	mosi-pin = <26>;
	miso-pin = <29>;
};

Note the "compatible" filed only states nrf-spi and NOT nrf-spim. This resulted in not all files being generated, thus the error when trying to build .

Adding compatible = "nrf-spim" at spi0,sp1 and spi2 fixed this. The same thing was needed for i2c, changing "nrf-twi" to "nrf-twim".

The bus error can be ignored, it was just me making silly pointer errors.