The rationale is that the programming environment of the Arduino ESP32 S3 board uses a remapping by means of the include file io_pin_remap.h. This file remaps the pins of several core Arduino ...
IO_EXPANDER_PIN_NUM_0 = (1ULL << 0), IO_EXPANDER_PIN_NUM_1 = (1ULL << 1), IO_EXPANDER_PIN_NUM_2 = (1ULL << 2), IO_EXPANDER_PIN_NUM_3 = (1ULL << 3), IO_EXPANDER_PIN ...