Addded different comments to show the mapping of PB6 and PB7.

To use the additional pins, PB6 and PB7, on the ATmega328 we have to add
some maps to the pins_arduino.h file. This allows Arduino to identify
PB6 and digital pin 22, and PB7 as digital pin 23.

Author: nseidle

firmware/hardware/Serial7Seg/variants/standard/pins_arduino.h

@@ -20,6 +20,9 @@
   Boston, MA  02111-1307  USA
 
   $Id: wiring.h 249 2007-02-03 16:52:51Z mellis $
+  
+  11-4-2012: Added pin definitions for PB6 and PB7 (oscillator pins)
+  to map to D22 and D23.
 */
 
 #ifndef Pins_Arduino_h
@@ -150,10 +153,8 @@ const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
 	PC,
 	PC,
 	PC,
-	PC,
-	PC,
-	PB, /* 20 PB6 */
-	PB,	// PB7
+	PB, //Add PB6 as D22
+	PB, //Add PB7 as D23
 };
 
 const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = {
@@ -177,10 +178,8 @@ const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = {
 	_BV(3),
 	_BV(4),
 	_BV(5),
-	_BV(6),
-	_BV(7),	
-	_BV(6),	// PB6
-	_BV(7),	// PB7
+	_BV(6), //Add PB6 as D22
+	_BV(7), //Add PB7 as D23
 };
 
 const uint8_t PROGMEM digital_pin_to_timer_PGM[] = {
@@ -222,7 +221,8 @@ const uint8_t PROGMEM digital_pin_to_timer_PGM[] = {
 	NOT_ON_TIMER,
 	NOT_ON_TIMER,
 	NOT_ON_TIMER,
-	NOT_ON_TIMER,
+	NOT_ON_TIMER, //Adding PB6 as D22
+	NOT_ON_TIMER, //Adding PB7 as D23
 };
 
 #endif