    helloWorld();
 }
 
+// Returns true if the command should be ignored (duplicate command)
+// Origin of idea:
+// https://bitbucket.org/angel-ignatov/sdp14-15-group-15/src/150da3baeb2045b83add95c70cfca494873c4180/arduino/arduino.ino?at=master&fileviewer=file-view-default
+bool ignore(int seqNo)
+{
+  if (seqNo == lastSeqNo) {
+    return true;
+  } else {
+    lastSeqNo = seqNo;
+    return false;
+  }
+}
+
 
 int getNumFromChar(char c){
   int r = (int)c - (int)'0';


int getSig(String c){
  int r = getNumFromChar(c[0]);
  return r;
}


#define KICK 5 
#define GRAB 6

int  lastSeqNo;

void setup(){
  
  SDPsetup();
