nRF5430 SPI sample code

Question

Hi, 
 
 I tried to run the code which was used by another forum user: 
 https://devzone.nordicsemi.com/f/nordic-q-a/63149/nrf5340---p0-10-not-working-as-spim-miso-on-non-secure-build/257673#257673 
 
 I used zip file " spi-rallare-secure-working.zip ". 
 The first issue that occurred was that some of the variables were not user-configurable (CONFIG_UART_0_NRF_UARTE,CONFIG_SPI_1_NRF_SPIM,CONFIG_SPI_2_NRF_SPIM)

After commenting those variables (and changing k_sleep(1000) to k_sleep(K_SECONDS(1)); - I also tried k_sleep(K_SECONDS(1));) 
 I got this:

My board is not able to initialize SPI_1. 
 When it comes to wiring I just connect MISO(P0.10) and MOSI(P0.4). 
 
 What can be wrong with my sample code? 
 
 Thanks, 
 Marta

Øyvind · Answer

Hi Marta,

I'm truly sorry for this to have taken so long. Attached is a working version on the secure SPI sample: spi-rallare-secure-working-NCS130.zip

First off all the overlay files were wrong, I completely missed that:

The name of the overlay was wrong. The overlay file should be named: nrf5340pdk_nrf5340_cpuapp.overlay (the same goes for non-secure)
The status field should "okay" and not "ok". See below

&spi1 {
	compatible = "nordic,nrf-spim";
	status = "okay";
	mosi-pin = <4>;
	miso-pin = <10>;	//<5>;
	sck-pin = <6>;
};

&spi2 {
	status = "disabled";
};

&i2c1 {
    status = "disabled";
};

The issue with board overlay file name will cause the compilation to not set correct SPI_1 configuration, leading to it not finding SPI_1 and giving the error "Could not get SPI_1 device". Adding CONFING_RESET_ON_FATAL_ERROR=n will stop the device from going into boot loop.

Here is the current project configuration I used:

CONFIG_SERIAL=y

CONFIG_UART_INTERRUPT_DRIVEN=y

CONFIG_LOG=y
CONFIG_LOG_IMMEDIATE=y

# SPI
CONFIG_SPI=y
CONFIG_SPI_1=y

CONFIG_MAIN_STACK_SIZE=4096

CONFIG_RESET_ON_FATAL_ERROR=n

Let me know how it works for you!

Kind regards,
Øyvind

nRF5430 SPI sample code

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