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Set the function of register by setting the Gravity I2C OLED-2864 Display Screen of I2C
communication. And the usage method of I2C is fully compliant with Arduino.
void Writed(unsigned char DATA)
Write data function. The usage method of I2C is fully compliant with Arduino.
Caution: I2C of FireBeetle Board-ESP32 is fully compliant with Arduino, mainly by calling Wire files.