A/D Converter
[Special Hardware]

Collaboration diagram for A/D Converter:

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Detailed Description

ATmega128 On-Chip ADC.

Defines
#define	ADC_PRESCALE_DIV2   0x00
	0x01,0x00 -> CPU clk/2
#define	ADC_PRESCALE_DIV4   0x02
	0x02 -> CPU clk/4
#define	ADC_PRESCALE_DIV8   0x03
	0x03 -> CPU clk/8
#define	ADC_PRESCALE_DIV16   0x04
	0x04 -> CPU clk/16
#define	ADC_PRESCALE_DIV32   0x05
	0x05 -> CPU clk/32
#define	ADC_PRESCALE_DIV64   0x06
	0x06 -> CPU clk/64
#define	ADC_PRESCALE_DIV128   0x07
	0x07 -> CPU clk/128
#define	ADC_INITIAL_CHANNEL   ADC0
#define	ADC_INITIAL_REF   AVCC
#define	ADC_INITIAL_MODE   SINGLE_CONVERSION
#define	ADC_INITIAL_PRESCALE   ADC_PRESCALE_DIV64
#define	ADC_BUF_SIZE   16
#define	AVR_SLEEP_CTRL_REG   MCUCR
#define	_adc_buf_head   ADC_BUF_SIZE
#define	_adc_buf_tail   ADC_BUF_SIZE+1
Typedefs
typedef enum adc_ref_type	adc_ref_t
typedef enum adc_mode_type	adc_mode_t
typedef enum adc_channel_type	adc_channel_t
Enumerations
enum	adc_ref_type { AVCC = 0, AREF, INTERNAL_256 }
enum	adc_mode_type { ADC_OFF, FREE_RUNNING, SINGLE_CONVERSION }
enum	adc_channel_type {   ADC0 = 0, ADC1 = 1, ADC2 = 2, ADC3 = 3,   ADC4 = 4, ADC5 = 5, ADC6 = 6, ADC7 = 7 }
Functions
void	ADCInit (void)
void	ADCSetRef (adc_ref_t reference)
void	ADCSetMode (adc_mode_t mode)
u_char	ADCSetPrescale (u_char prescalar)
void	ADCSetChannel (adc_channel_t adc_channel)
void	ADCBufferFlush (void)
void	ADCStartConversion (void)
void	ADCStartLowNoiseConversion (void)
void	ADCStopConversion (void)
u_char	ADCRead (u_short *value)
adc_mode_t	ADCGetMode (void)
int	ADCBufRead (u_short *buf, u_short *read)
int	ADCBufWrite (u_short *buf, u_short *write)
void	ADCBufInit (u_short *buf)
Variables
u_char	adc_sleep_mode = SLEEP_MODE_ADC
adc_mode_t	current_mode = ADC_OFF
u_short *	ADC_buffer = NULL

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