Switch case and software serial

Using Arduino Project Guidance
6

I am pretty sure I follow you code, my concern is that it does not address bi-directional communication, and simply forwards everything to the my serial unless its the exit clause... am I understanding the code properly...

Thanks form the help guys :slight_smile:

PeterH:
You're right that the problem is here:

void VIPassing() // pass just data to the unit

{
   do
  {
      SerialinByte = Serial.read();
     
          if (mySerial.available())
         {
           Serial.write(mySerial.read());
         }
       
         if (Serial.available())
         {
           mySerial.write(Serial.read());
         }
       
  }
  while (SerialinByte != 33);
}




I suggest you get rid of the global, and do it something like this:

void VIPassing() // pass just data to the unit
{
  char c = 0;
  while(true)
  {
    // wait for a character to arrive
    while(Serial.available() == 0)
    {
      // do nothing
    }
    c = Serial.read();
    if(c == '!')
    {
      break; // out of the enclosing while loop
    }
    else
    {
      mySerial.write(c);
    }
  }
}