Introduction Arduino ESP32 use Serial port to flash software and print information on Terminal. ESP32 supports 3 Serial ports so you need not to use SoftwareSerial as in general Arduino. In this tutorial we only care about using How to use multiple Serial port on Arduino ESP32 to print the debug information to Terminal. Hardware You do not need any extra hardware. Software We use ' HardwareSerial' class for Serial communication. It has some important interfaces: - HardwareSerial(int uart_nr): this is the constructor of HardwareSerial where uart_nr is 0, 1 or 2 so we have maximum 3 Serial ports.

For technical support with the SpectraView II product, please visit the SpectraView II section of the NEC DISPLAY. SpectraView II supports the following NEC.