SoftModem-serial-bridge.ino

#include <SoftModem.h>

SoftModem modem = SoftModem();

void setup() {
  Serial.begin(115200);
  Serial.println("Booting");
  delay(100);
  modem.begin();
}

void loop() {
  while(modem.available()){
    
    Serial.print("Received");
    
    int c = modem.read();
    Serial.print((char)c);    
  }
  if(Serial.available()){
    modem.write(0xff);
    while(Serial.available()){
      char c = Serial.read();
      modem.write(c);
    }
  }
}