Softwareserial.h Library [repack] Jun 2026

// Send a test pattern void testSoftwareSerialBaud(long baud) SoftwareSerial ss(10, 11); ss.begin(baud); ss.print("U"); delay(1000);

void sendString(SoftwareSerial &ss, char *msg) ss.listen(); // Ensure we're not receiving delay(1); // Allow any pending RX to finish ss.print(msg); softwareserial.h library

The SoftwareSerial.h library solves this by using —a technique where software mimics the precise timing of a hardware UART (Universal Asynchronous Receiver-Transmitter) to send and receive data. Key Features and Functions void sendString(SoftwareSerial &ss

void checkForData(SoftwareSerial &ss) ss.listen(); if (ss.available()) // Process char *msg) ss.listen()

: Communicating with specialized sensors like the MQ-135 gas sensor that use serial protocols. Limitations and Trade-offs