Best place would be in Seed documentation and on the pinout diagram which 'gmx' handily provided above.I ended up going through pins 0 to 10, and found that the chart suggests the actual mapping corresponds to those indicated as MicroPython pins! It would be nice if this was made clearer, but where?
I hadn't immediately twigged 'Pn' meant 'GPIOn' but the circuit diagram and board definitions do make it clear which RP2040 GPIO pins are used for the SPI SCK, MOSI and MISO signals.
But you said you had tried those and got no joy ?
Anyway, sorted now, so glad you solved the issue.
Statistics: Posted by hippy — Mon Apr 21, 2025 7:40 pm