Error while trying to config SPI in VS code .

[Manas_punjabi]

HI i am working with the nrf 52833 dk board using  nrf connect and trying to implement SPI ,

#define SPI3_NODE DT_NODELABEL(SPI_3)

static const struct spi_dt_spec* dev_spi = SPI_DT_SPEC_GET(SPI3_NODE,SPI_OP_MODE_MASTER,1);

I am getting this error - identifier "__device_dts_ord_DT_N_NODELABEL_SPI_3_BUS_ORD" is undefined. 

I am new to ncs and zephyr , so what is causing this error?

[Marte Myrvold]

Hi,

Please try using this SPI example made by a former colleague of mine as a starting point instead: https://github.com/crfosse/ncs_projects/tree/main/peripheral_zephyr/spi

Best regards,

Marte

[Manas_punjabi]

Hi , thank you for your response,

A little simple doubt I have  ,after reading through the sample , what is the difference in using the CS pin through the 

spi_cs_control                                          and 

cs-gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;

[Marte Myrvold]

Hi,

With spi_cs_control you can control a CS line via a GPIO line instead of using the inner CS logic of the controller. 

The example I linked to is based on an older version of nRF Connect SDK (v1.8.0), so it might be a bit outdated. However, I found an example by another colleague which is based on v2.0.2. It is a bit more complex, but it shows how to use SPI with spi_cs_control: https://github.com/too1/ncs-spi-master-slave-example.

Best regards,

Marte

[Manas_punjabi]

Hi , yes this a little complex but still understandable ,

I have a few question regarding the overlay file 

1) what is this for 

reg_my_spi_master: spi-dev-a@0 {
	reg = <0>;

and 

2) def-char = <0x00>; is showing me an error saying 

Property not mentioned in "nordic,nrf-spim"

[Manas_punjabi]

If possible could you help me out in trying to use the 1st sample only , I am trying to implement flash and the only thing I want to try first is getting the manufacture ID.