Added explicit ADC channel masks for the standard set of ADC channels, as the single-ended channel MUX masks are not equal to the channel number on some AVR models. Changed demos to use the new channel masks when using the ADC driver.

3 files changed, 88 insertions, 6 deletions

diff --git a/LUFA/Drivers/Board/Temperature.c b/LUFA/Drivers/Board/Temperature.c
index 748e0484f..ea12bf766 100644
--- a/LUFA/Drivers/Board/Temperature.c
+++ b/LUFA/Drivers/Board/Temperature.c
@@ -45,7 +45,7 @@ static const uint16_t PROGMEM Temperature_Lookup[] = {
 

 int8_t Temperature_GetTemperature(void)

 {

-	uint16_t Temp_ADC = ADC_GetChannelReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | TEMP_ADC_CHANNEL);

+	uint16_t Temp_ADC = ADC_GetChannelReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | TEMP_ADC_CHANNEL_MASK);

 

 	if (Temp_ADC > pgm_read_word(&Temperature_Lookup[0]))

 	  return TEMP_MIN_TEMP;

diff --git a/LUFA/Drivers/Board/Temperature.h b/LUFA/Drivers/Board/Temperature.h
index f7f00342f..1b2baf2fb 100644
--- a/LUFA/Drivers/Board/Temperature.h
+++ b/LUFA/Drivers/Board/Temperature.h
@@ -79,13 +79,16 @@
 	/* Public Interface - May be used in end-application: */

 		/* Macros: */

 			/** ADC channel number for the temperature sensor. */

-			#define TEMP_ADC_CHANNEL   0

+			#define TEMP_ADC_CHANNEL       0

 			

+			/** ADC channel MUX mask for the temperature sensor. */

+			#define TEMP_ADC_CHANNEL_MASK  ADC_CHANNEL0

+

 			/** Minimum returnable temperature from the \ref Temperature_GetTemperature() function. */

-			#define TEMP_MIN_TEMP      TEMP_TABLE_OFFSET

+			#define TEMP_MIN_TEMP          TEMP_TABLE_OFFSET

 

 			/** Maximum returnable temperature from the \ref Temperature_GetTemperature() function. */

-			#define TEMP_MAX_TEMP      ((TEMP_TABLE_SIZE - 1) + TEMP_TABLE_OFFSET)

+			#define TEMP_MAX_TEMP          ((TEMP_TABLE_SIZE - 1) + TEMP_TABLE_OFFSET)

 		

 		/* Pseudo-Function Macros: */

 			#if defined(__DOXYGEN__)

diff --git a/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h b/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h
index 472e1df47..b0a9b9e80 100644
--- a/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h
+++ b/LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h
@@ -108,7 +108,81 @@
 

 			/** Sets the ADC input clock to prescale by a factor of 128 the AVR's system clock. */

 			#define  ADC_PRESCALE_128                ((1 << ADPS2) | (1 << ADPS1) | (1 << ADPS0))

+			

+			//@{

+			/** MUX mask define for the ADC0 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_CHANNEL0                    0x00

+

+			/** MUX mask define for the ADC1 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_CHANNEL1                    0x01

+

+			/** MUX mask define for the ADC2 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_CHANNEL2                    0x02

+

+			/** MUX mask define for the ADC3 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_CHANNEL3                    0x03

+

+			/** MUX mask define for the ADC4 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_CHANNEL4                    0x04

 

+			/** MUX mask define for the ADC5 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_CHANNEL5                    0x05

+

+			/** MUX mask define for the ADC6 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_CHANNEL6                    0x06

+

+			/** MUX mask define for the ADC7 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_CHANNEL7                    0x07

+

+			/** MUX mask define for the internal 1.1V bandgap channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */

+			#define  ADC_1100MV_BANDGAP              0x1E

+			

+			#if (defined(__AVR_ATmega16U4__)  || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))

+				/** MUX mask define for the ADC8 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.

+				 *

+				 *  \note Note available on all AVR models.

+				 */

+				#define  ADC_CHANNEL8                0x20

+

+				/** MUX mask define for the ADC9 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.

+				 *

+				 *  \note Note available on all AVR models.

+				 */

+				#define  ADC_CHANNEL9                0x21

+

+				/** MUX mask define for the ADC10 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.

+				 *

+				 *  \note Note available on all AVR models.

+				 */

+				#define  ADC_CHANNEL10               0x22

+

+				/** MUX mask define for the ADC11 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.

+				 *

+				 *  \note Note available on all AVR models.

+				 */

+				#define  ADC_CHANNEL11               0x23

+

+				/** MUX mask define for the ADC12 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.

+				 *

+				 *  \note Note available on all AVR models.

+				 */

+				#define  ADC_CHANNEL12               0x24

+

+				/** MUX mask define for the ADC13 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.

+				 *

+				 *  \note Note available on all AVR models.

+				 */

+				#define  ADC_CHANNEL13               0x25

+

+				/** MUX mask define for the internal temperature sensor channel of the ADC. See \ref ADC_StartReading and

+				 *  \ref ADC_GetChannelReading.

+				 *

+				 *  \note Note available on all AVR models.

+				 */

+				#define  ADC_INT_TEMP_SENS           0x27			

+			#endif

+			//@}

+		

 		/* Pseudo-Function Macros: */

 			#if defined(__DOXYGEN__)

 				/** Initializes the ADC, ready for conversions. This must be called before any other ADC operations.

@@ -159,6 +233,11 @@
 			 *  associated port pin as an input and disables the digital portion of the I/O to reduce

 			 *  power consumption.

 			 *

+			 *  \note This must only be called for ADC channels with are connected to a physical port

+			 *        pin of the AVR, denoted by its special alternative function ADCx.

+			 *

+			 *  \note The channel number must be specified as an integer, and NOT a ADC_CHANNELx mask.

+			 *

 			 *  \param[in] Channel  ADC channel number to set up for conversions

 			 */

 			static inline void ADC_SetupChannel(const uint8_t Channel)

@@ -196,7 +275,7 @@
 			 *  Once executed, the conversion status can be determined via the \ref ADC_IsReadingComplete() macro and

 			 *  the result read via the \ref ADC_GetResult() macro.

 			 *

-			 *  \param[in] MUXMask  Mask comprising of an ADC channel number, reference mask and adjustment mask

+			 *  \param[in] MUXMask  Mask comprising of an ADC channel mask, reference mask and adjustment mask

 			 */

 			static inline void ADC_StartReading(const uint8_t MUXMask)

 			{

@@ -208,7 +287,7 @@
 			/** Performs a complete single reading from channel, including a polling spin-loop to wait for the

 			 *  conversion to complete, and the returning of the converted value.

 			 *

-			 *  \param[in] MUXMask  Mask comprising of an ADC channel number, reference mask and adjustment mask

+			 *  \param[in] MUXMask  Mask comprising of an ADC channel mask, reference mask and adjustment mask

 			 */

 			static inline uint16_t ADC_GetChannelReading(const uint8_t MUXMask) ATTR_WARN_UNUSED_RESULT;

 			static inline uint16_t ADC_GetChannelReading(const uint8_t MUXMask)