![]() Syntax: SoftwareSerial(rxPin, txPin, inverse_logic) ![]() This function used to create an instance of SoftwareSerial Object and you need to call SoftwareSerial.begin() to enable the communication. Let us discuss different SoftwareSerial library functions in details before taking your to simple programming with softwareserial.h libraryÄifferent Functions of SoftwareSerial Library SoftwareSerial(). So, that additional serial port must be programmed using softwareserial.h library. The SoftwareSerial Library has been developed to allow serial communication to take place on the other digital pins of your boards, using software to replicate the functionality of the hardwired RX and TX lines. In Arduino boardwhen we need to deal with more than one serial communication port we need to use SoftwareSerial library. ![]() When you use an Arduino board on a project you can choose the standard Serial pins as Rx, Tx, from the UART inside the Arduino board, so it is called Serial TTL. The serial communication is built in support provided with all types of Arduino boards with Pin Number 0 and 1 (i.e. Serial communications allow you to connect two different devices sending and receiving data between them.
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