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Fixed ADC routines not correctly returning the last result when multiple channels were read.

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Fixed ADC routines failing to read the extended channels (Channels 8 to 13, Internal Temperature Sensor) on the U4 series USB AVR parts.
This commit is contained in:
Dean Camera 2010-03-13 10:14:51 +00:00
parent aca7863350
commit 4f9dd142e7
2 changed files with 33 additions and 22 deletions
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50
LUFA/Drivers/Peripheral/AVRU4U6U7/ADC.h
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@ -116,36 +116,36 @@
//@{
/** MUX mask define for the ADC0 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
#define ADC_CHANNEL0 0x00
#define ADC_CHANNEL0 (0x00 << MUX0)
/** MUX mask define for the ADC1 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
#define ADC_CHANNEL1 0x01
#define ADC_CHANNEL1 (0x01 << MUX0)
#if !(defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))
/** MUX mask define for the ADC2 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
*
* \note Note available on all AVR models.
*/
#define ADC_CHANNEL2 0x02
#define ADC_CHANNEL2 (0x02 << MUX0)
/** MUX mask define for the ADC3 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading.
*
* \note Note available on all AVR models.
*/
#define ADC_CHANNEL3 0x03
#define ADC_CHANNEL3 (0x03 << MUX0)
#endif
/** MUX mask define for the ADC4 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
#define ADC_CHANNEL4 0x04
#define ADC_CHANNEL4 (0x04 << MUX0)
/** MUX mask define for the ADC5 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
#define ADC_CHANNEL5 0x05
#define ADC_CHANNEL5 (0x05 << MUX0)
/** MUX mask define for the ADC6 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
#define ADC_CHANNEL6 0x06
#define ADC_CHANNEL6 (0x06 << MUX0)
/** MUX mask define for the ADC7 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
#define ADC_CHANNEL7 0x07
#define ADC_CHANNEL7 (0x07 << MUX0)
/** 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
@ -155,44 +155,44 @@
*
* \note Note available on all AVR models.
*/
#define ADC_CHANNEL8 0x20
#define ADC_CHANNEL8 ((1 << 8) | (0x00 << MUX0))
/** 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
#define ADC_CHANNEL9 ((1 << 8) | (0x01 << MUX0))
/** 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
#define ADC_CHANNEL10 ((1 << 8) | (0x02 << MUX0))
/** 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
#define ADC_CHANNEL11 ((1 << 8) | (0x03 << MUX0))
/** 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
#define ADC_CHANNEL12 ((1 << 8) | (0x04 << MUX0))
/** 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
#define ADC_CHANNEL13 ((1 << 8) | (0x05 << MUX0))
/** 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
#define ADC_INT_TEMP_SENS ((1 << 8) | (0x07 << MUX0))
#endif
//@}
@ -224,7 +224,8 @@
*/
static inline bool ADC_IsReadingComplete(void);
/** Retrieves the conversion value of the last completed ADC conversion.
/** Retrieves the conversion value of the last completed ADC conversion and clears the reading
* completion flag.
*
* \return The result of the last ADC conversion
*/
@ -236,9 +237,9 @@
#define ADC_GetStatus() ((ADCSRA & (1 << ADEN)) ? true : false)
#define ADC_IsReadingComplete() (ADCSRA & (1 << ADSC))
#define ADC_IsReadingComplete() ((ADCSRA & (1 << ADIF)) ? true : false)
#define ADC_GetResult() ADC
#define ADC_GetResult() (ADCSRA |= (1 << ADIF), ADC)
#endif
/* Inline Functions: */
@ -290,9 +291,16 @@
*
* \param[in] MUXMask Mask comprising of an ADC channel mask, reference mask and adjustment mask
*/
static inline void ADC_StartReading(const uint8_t MUXMask)
static inline void ADC_StartReading(const uint16_t MUXMask)
{
ADMUX = MUXMask;
#if (defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))
if (MUXMask & (1 << 8))
ADCSB |= (1 << MUX5);
else
ADCSB &= ~(1 << MUX5);
#endif
ADCSRA |= (1 << ADSC);
}
@ -302,8 +310,8 @@
*
* \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)
static inline uint16_t ADC_GetChannelReading(const uint16_t MUXMask) ATTR_WARN_UNUSED_RESULT;
static inline uint16_t ADC_GetChannelReading(const uint16_t MUXMask)
{
ADC_StartReading(MUXMask);