Reading Processing String in Arduino

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Thanks, that's a good idea. I decided to check the serial stream and send it back to the serial monitor. It seemed to be receiving the characters fine. Then I checked the function I was using before again and it was still not working.

The problem was with the Serial.readstring() function, for whatever reason (maybe those outlined in robin2's tutorial).

I had success with using cstrings instead and the following crude statements:

int check = 1;
 int i = 0;
 while (check){
  char c = Serial1.read();
  if(c == Str3[i]){
    i++;
  }
  if(i==(strlen(Str3)-1)){
    check = 0;
  }
 }
  check = 1;