From 04475f4bfed43d3e956ffeb28e8aa4b552f922f7 Mon Sep 17 00:00:00 2001
From: "David A. Mellis" <d.mellis@arduino.cc>
Date: Sun, 16 May 2010 04:05:40 +0000
Subject: Adding A0=14, A1=15, etc. aliases for analog input pins and modifying
 analogRead() to accept them (in addition to 0, 1, 2, etc.).  Removing some
 unused code elsewhere.

---
 cores/arduino/WProgram.h      | 29 +++++++++++++++++++++++++++++
 cores/arduino/pins_arduino.c  |  4 ----
 cores/arduino/wiring.h        |  6 ------
 cores/arduino/wiring_analog.c | 14 +++++++++-----
 4 files changed, 38 insertions(+), 15 deletions(-)

diff --git a/cores/arduino/WProgram.h b/cores/arduino/WProgram.h
index f5d3e29..39dc611 100755
--- a/cores/arduino/WProgram.h
+++ b/cores/arduino/WProgram.h
@@ -27,6 +27,35 @@ long random(long);
 long random(long, long);
 void randomSeed(unsigned int);
 long map(long, long, long, long, long);
+
+#if defined(__AVR_ATmega1280__)
+const static uint8_t A0 = 54;
+const static uint8_t A1 = 55;
+const static uint8_t A2 = 56;
+const static uint8_t A3 = 57;
+const static uint8_t A4 = 58;
+const static uint8_t A5 = 59;
+const static uint8_t A6 = 60;
+const static uint8_t A7 = 61;
+const static uint8_t A8 = 62;
+const static uint8_t A9 = 63;
+const static uint8_t A10 = 64;
+const static uint8_t A11 = 65;
+const static uint8_t A12 = 66;
+const static uint8_t A13 = 67;
+const static uint8_t A14 = 68;
+const static uint8_t A15 = 69;
+#else
+const static uint8_t A0 = 14;
+const static uint8_t A1 = 15;
+const static uint8_t A2 = 16;
+const static uint8_t A3 = 17;
+const static uint8_t A4 = 18;
+const static uint8_t A5 = 19;
+const static uint8_t A6 = 20;
+const static uint8_t A7 = 21;
+#endif
+
 #endif
 
 #endif
\ No newline at end of file
diff --git a/cores/arduino/pins_arduino.c b/cores/arduino/pins_arduino.c
index 1c1c088..b662058 100755
--- a/cores/arduino/pins_arduino.c
+++ b/cores/arduino/pins_arduino.c
@@ -77,10 +77,6 @@
 #define PK 11
 #define PL 12
 
-#define REPEAT8(x) x, x, x, x, x, x, x, x
-#define BV0TO7 _BV(0), _BV(1), _BV(2), _BV(3), _BV(4), _BV(5), _BV(6), _BV(7)
-#define BV7TO0 _BV(7), _BV(6), _BV(5), _BV(4), _BV(3), _BV(2), _BV(1), _BV(0)
-
 
 #if defined(__AVR_ATmega1280__)
 const uint16_t PROGMEM port_to_mode_PGM[] = {
diff --git a/cores/arduino/wiring.h b/cores/arduino/wiring.h
index e6dcde1..edc9704 100755
--- a/cores/arduino/wiring.h
+++ b/cores/arduino/wiring.h
@@ -106,12 +106,6 @@ int analogRead(uint8_t);
 void analogReference(uint8_t mode);
 void analogWrite(uint8_t, int);
 
-void beginSerial(long);
-void serialWrite(unsigned char);
-int serialAvailable(void);
-int serialRead(void);
-void serialFlush(void);
-
 unsigned long millis(void);
 unsigned long micros(void);
 void delay(unsigned long);
diff --git a/cores/arduino/wiring_analog.c b/cores/arduino/wiring_analog.c
index 529ad52..63be477 100755
--- a/cores/arduino/wiring_analog.c
+++ b/cores/arduino/wiring_analog.c
@@ -39,16 +39,20 @@ int analogRead(uint8_t pin)
 {
 	uint8_t low, high;
 
-	// set the analog reference (high two bits of ADMUX) and select the
-	// channel (low 4 bits).  this also sets ADLAR (left-adjust result)
-	// to 0 (the default).
-	ADMUX = (analog_reference << 6) | (pin & 0x07);
-  
 #if defined(__AVR_ATmega1280__)
+	if (pin >= 54) pin -= 54; // allow for channel or pin numbers
+
 	// the MUX5 bit of ADCSRB selects whether we're reading from channels
 	// 0 to 7 (MUX5 low) or 8 to 15 (MUX5 high).
 	ADCSRB = (ADCSRB & ~(1 << MUX5)) | (((pin >> 3) & 0x01) << MUX5);
+#else
+	if (pin >= 14) pin -= 14; // allow for channel or pin numbers
 #endif
+  
+	// set the analog reference (high two bits of ADMUX) and select the
+	// channel (low 4 bits).  this also sets ADLAR (left-adjust result)
+	// to 0 (the default).
+	ADMUX = (analog_reference << 6) | (pin & 0x07);
 
 	// without a delay, we seem to read from the wrong channel
 	//delay(1);
-- 
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