 }
 
 void loop() {
-  for (int pin = 0; pin < PINS_COUNT; pin++) {
+  for (int pin = 0; pin < PINS_COUNT; pin++) {  // For all defined pins
     if (print_pinno(pin)) {  // Does pin exist?
 
       int bitno = g_APinDescription[pin].ulPin;

#define PRINTLN(...) mySerial.println(__VA_ARGS__)



void setup() {
  mySerial.begin(9600);
  while (!mySerial)

    }
  }
  if (port == &PORT->Group[1]) {
    if (bitno < ARRAYSIZE(pin_to_SERCOMB_info)) {
      PRINT(pin_to_SERCOMB_info[bitno]);
      /*
       * Get sercom number from the string.  (Ugly, but saves space.)
