How to debug if the SPI initialization successfully or not

[Ree Wang]

Hi DevZone, 

I am working on a project using nRF52840 preview DK and Arduino CAN Bus shield. I modified source code base on some Git Projects. It seems the SPI initialization is succeeded, however, when I send the message from nRF52 to Shield, Shield always return '0'. 

I am not sure the SPI initialization is succeeded or not, how can I check it? Is there any API which I can use to check the SPI setting status such as PIN number and configuration status?

Kind regards

[Kenneth]

Hi, to debug serial interfaces I recommend to have a logic analyzer, such as https://www.saleae.com/ 

[Ree Wang]

Thanks Kenneth. 

Is there any API in Nordic SDK library we can use to check the SPI setting status? I prefer a free solution for this purpose.  

[Kenneth]

There is nothing preventing the application to manually read all hardware registers of the SPI instance, you can refer to datasheet for register, events, and tasks. However you will need a Logic analyzer to effectively work out the problem

[Ree Wang]

Thanks Kenneth