nRf52840 Feather - No GPIO activity about arduino_gfx HOT 3 CLOSED

I did not have feather board in hand, what board selected in Arduino IDE?

from arduino_gfx.

"Adafruit Feather nRF52840 Express".

from arduino_gfx.

I solved the problem - I was using incorrect pin numbers. The correct pin-mapping is in:

Library/Arduino15/packages/adafruit/hardware/nrf52/0.21.0/variants/feather_nrf52840_express/variant.h

You must use a pin number that translates to the "Dx" (e.g. D1, D2, D3) Arduino convention that indexes into g_ADigitalPinMap[]. Very frustrating.

I used this and it works:

Arduino_DataBus *bus = new Arduino_HWSPI(TFT_DC, TFT_CS, false);

Thanks!

from arduino_gfx.