https://test-devzone.nordicsemi.com/f/nordic-q-a/88113/nrf52833-sdk-16-0-0-problems-initialization-spi-masterHello everyone! I am trying to add a SPI Master instance for my custom PCB, im using spi example as reference but im having a specific problem, and it is that the program dont pass the SPI initialization code line (not even return a error code). en-USTelligent Community 13 Non-ProductionFri, 20 May 2022 14:26:54 GMThttps://test-devzone.nordicsemi.com/thread/368856?ContentTypeID=1Fri, 20 May 2022 14:26:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6fc05a50-cbd5-4604-9742-0edb2beba671user113084<p>Hi Edvin TY for youy answer, i manage to solve the problem. It was that i migrate my project from nrf52832 to nrf52833, and i was missing a defining on the makefile, specifically i keep the define &quot;-DNRF52&quot; instead of &quot;-DNRF52833&quot;, that make that the whole port 1 of the mcu out of range for the code. So how my SPI pins are in the port 1 at the moment i try to initialize them it seem like everything crash. Hope this can help someone in the future.</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/368829?ContentTypeID=1Fri, 20 May 2022 12:12:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:183ce726-e2a3-46fe-b333-dccc8f33422cuser26071<p>Hello,</p> <p>Have you tried stepping through your code? What happens when you execute line 12 in your snippet? Does it return? Using a debugger and actually checking what happens inside this function can be useful if it doesn&#39;t return at all.</p> <p>Not knowing your HW or how the&nbsp;turn_on_led() function works, I don&#39;t know how to interpret that. You checked that calling&nbsp;turn_on_led(RGB_LEDS_B) and then turn_on_led(RGB_LEDS_G) actually turns on the green LED even if the red was turned on first?</p> <p></p> <p>Do you have a debugger that you can use to step through the code?</p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>