// A test for the forum: https://forum.arduino.cc/t/software-serial-reading-1-byte/1221177/
// This Wokwi project: https://wokwi.com/projects/389118916901984257

#include <SoftwareSerial.h>

SoftwareSerial mySerial(2, 3, false); // RX, TX, 

void setup() 
{
  // "mySerial" at pin 2 and 3.
  // The RX and TX lines are idle high.
  // Hopefully there are pullup resistors.
  mySerial.begin(4800);
  delay(5);            // I would prefer 1000 ms

  // For a test, send 0xFF
  mySerial.print("\xFF");
}

void loop() 
{ 
  delay(10);
}