The Uno is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a ...
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 ...