GPS code integrated with other functions...

Projects Programming
4

eliajaz:
Once I change the condition to "while (strncmp(buffer, "$GPRMC",6) == 0)" I get good results as listed below. However It stay in this infinite loop.

  readline();

  //Check if $GPRMC sentence type
  if (strncmp(buffer, "$GPRMC",6) == 0) {

You aren't re-reading the line, so of course it will repeat the same data.

    function1();
    function2();
    function3();
    function4();

Better function names please. Next you will be using variable1, variable2, variable3, and so on.

  while(1)
  {  
  }

I agree with PaulS here. Restructure so that setup goes in setup, then you don't have to have a loop inside loop.

  while (1) {
    c=Serial1.read();
    if (c == -1)
      continue;

Better read up on Serial1.available().