GEM (a.k.a. Good Enough Menu) - Arduino library for creation of graphic multi-level menu with editable menu items, such as variables (supports int, byte, float, double, bool, char[17] data types) and ...

extern "C" uint8_t u8x8_gpio_and_delay_arduino(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr); extern "C" uint8_t u8x8_byte_arduino_4wire_sw_spi(u8x8_t ...