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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.

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This commit is contained in:
David A. Mellis 2010-05-16 04:05:40 +00:00
parent 282d623180
commit 3738f450c0
4 changed files with 39 additions and 16 deletions
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29
hardware/arduino/cores/arduino/WProgram.h
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@ -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

4
hardware/arduino/cores/arduino/pins_arduino.c
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@ -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[] = {

6
hardware/arduino/cores/arduino/wiring.h
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@ -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);

16
hardware/arduino/cores/arduino/wiring_analog.c
View File

@ -39,16 +39,20 @@ int analogRead(uint8_t pin)
{
uint8_t low, high;
#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);
#if defined(__AVR_ATmega1280__)
// 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);
#endif
// without a delay, we seem to read from the wrong channel
//delay(1);