/*
LUFA Library
- Copyright (C) Dean Camera, 2011.
+ Copyright (C) Dean Camera, 2012.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
* \code
* // Initialize the ADC driver before first use
* ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_32);
- *
+ *
* // Must setup the ADC channel to read beforehand
* ADC_SetupChannel(1);
- *
+ *
* // Perform a single conversion of the ADC channel 1
* ADC_GetChannelReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | ADC_CHANNEL1);
* printf("Conversion Result: %d\r\n", ADC_GetResult());
- *
+ *
* // Start reading ADC channel 1 in free running (continuous conversion) mode
* ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | ADC_CHANNEL1);
* for (;;)
#define _ADC_GET_MUX_MASK2(y) ADC_CHANNEL ## y
#define _ADC_GET_MUX_MASK(y) _ADC_GET_MUX_MASK2(y)
#endif
-
+
/* Public Interface - May be used in end-application: */
/* Macros: */
/** \name ADC Reference Configuration Masks */
/** Reference mask, for using the internally generated 2.56V reference voltage as the ADC reference. */
#define ADC_REFERENCE_INT2560MV ((1 << REFS1) | (1 << REFS0))
//@}
-
+
/** \name ADC Result Adjustment Configuration Masks */
//@{
/** Left-adjusts the 10-bit ADC result, so that the upper 8 bits of the value returned by the
*/
#define ADC_SINGLE_CONVERSION (0 << ADATE)
//@}
-
+
/** \name ADC Prescaler Configuration Masks */
//@{
/** Sets the ADC input clock to prescale by a factor of 2 the AVR's system clock. */
/** MUX mask define for the ADC1 channel of the ADC. See \ref ADC_StartReading() and \ref ADC_GetChannelReading(). */
#define ADC_CHANNEL1 (0x01 << MUX0)
- #if !(defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))
+ #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 Not available on all AVR models.
/** MUX mask define for the ADC7 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
#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 << MUX0)
-
#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().
*
#define ADC_INT_TEMP_SENS ((1 << 8) | (0x07 << MUX0))
#endif
+ /** MUX mask define for the internal 1.1V band-gap channel of the ADC. See \ref ADC_StartReading() and \ref ADC_GetChannelReading(). */
+ #define ADC_1100MV_BANDGAP (0x1E << MUX0)
+
/** Retrieves the ADC MUX mask for the given ADC channel number.
*
- * \note This macro will only work correctly on channel numbers that are compile-time
- * constants defined by the preprocessor.
+ * \attention This macro will only work correctly on channel numbers that are compile-time
+ * constants defined by the preprocessor.
*
* \param[in] Channel Index of the ADC channel whose MUX mask is to be retrieved.
*/
*
* \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.
- * \n\n
*
- * \note The channel number must be specified as an integer, and <b>not</b> a \c ADC_CHANNEL* mask.
+ * \warning The channel number must be specified as an integer, and <b>not</b> a \c ADC_CHANNEL* mask.
*
* \param[in] ChannelIndex ADC channel number to set up for conversions.
*/
*
* \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.
- * \n\n
*
- * \note The channel number must be specified as an integer, and <b>not</b> a \c ADC_CHANNEL* mask.
+ * \warning The channel number must be specified as an integer, and <b>not</b> a \c ADC_CHANNEL* mask.
*
* \param[in] ChannelIndex ADC channel number to set up for conversions.
*/
* the results read directly from the \ref ADC_GetResult() instead to reduce overhead.
*
* \param[in] MUXMask Mask comprising of an ADC channel mask, reference mask and adjustment mask.
+ *
+ * \return Converted ADC result for the given ADC channel.
*/
static inline uint16_t ADC_GetChannelReading(const uint16_t MUXMask) ATTR_WARN_UNUSED_RESULT;
static inline uint16_t ADC_GetChannelReading(const uint16_t MUXMask)
*
* \param[in] Mode Mask of ADC prescale and mode settings.
*/
- static inline void ADC_Init(uint8_t Mode) ATTR_ALWAYS_INLINE;
- static inline void ADC_Init(uint8_t Mode)
+ static inline void ADC_Init(const uint8_t Mode) ATTR_ALWAYS_INLINE;
+ static inline void ADC_Init(const uint8_t Mode)
{
ADCSRA = ((1 << ADEN) | Mode);
}
projects / pub / USBasp.git / blobdiff