Softwareserial.h | Arduino Library Download

void loop() mySerial.println("Hello");

| Library/Approach | Best for | |----------------|-----------| | HardwareSerial | Primary serial, high baud rates. | | NeoSWSerial | Reliable reception on two pins at up to 57600 baud. | | AltSoftSerial | High-performance, but uses fixed timer pins (8 & 9 on Uno). | | SerialPort (Mega) | Multiple hardware ports (Serial1, Serial2, Serial3). | | I2C/SPI to UART bridge (e.g., SC16IS750) | Add many hardware UARTs externally. | Problem: Read NMEA sentences from a GPS module (4800 baud) and transmit them over Bluetooth (9600 baud) to a smartphone. softwareserial.h arduino library download

void loop() if (gps.available()) char c = gps.read(); ble.write(c); // forward GPS data to Bluetooth Serial.write(c); // optional debug void loop() mySerial

ss.print("GPS: "); ss.println(gpsData); if (ss.available()) char c = ss.read(); // process | | SerialPort (Mega) | Multiple hardware ports