Unable to use SPI1 on the raspberry pi pico about rf24 HOT 3 CLOSED

My bad, I hadn't taken a look in the documentation that you mentioned above.
&SPI1 inside the bracket is all that was required. 😂 I'm a complete noob.
Everything works flawlessly now!
Always grateful to you guys, you do so much for the community
Your work cannot be appreciated enough
Thanks a ton for your help!!!!

from rf24.

The PicoSDK docs have a table outlining the GPIO pins' capabilities. According to that table, the pins you selected seem correct.

Did you pass the SPI1 object to radio.begin()?

   SPI1.setRX(8);
   SPI1.setTX(11);
   SPI1.setSCK(10);
   SPI1.begin();
   if (!radio.begin(&SPI1)) {
      return 1; // radio hardware not responding
   }

Did you review our doc about using the Arduino platform with a secondary SPI bus?

I'm not sure if you read the Arduino-Pico core docs, but I'll put that in here as well: the SPI library docs for the Arduino-Pico core.

from rf24.

From the Arduino-Pico docs:

the following RP2040-specific changes:

• SPI.begin(bool hwCS) can take an options hwCS parameter.

By passing in true for hwCS the sketch does not need to worry about asserting and deasserting the CS pin between transactions. The default is false and requires the sketch to handle the CS pin itself, as is the standard way in Arduino.

So, passing false would be preferable since the RF24 library takes care of the CSN pin independently from the other SPI pins.

    // let RF24 lib manage the CSN pin

    SPI1.begin(false);
    // or equivalently 
    SPI1.begin();

from rf24.