Nut/OS: A/D Converter

Nut/OS 4.10.3

API Reference

ATmega128 On-Chip ADC. More...

Collaboration diagram for A/D Converter:

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, ADC_OFF, FREE_RUNNING_T0, FREE_RUNNING_T1, FREE_RUNNING_T2, FREE_RUNNING_EXT, SINGLE_CONVERSION }
Functions
void	ADCInit (void)
void	ADCSetRef (adc_ref_t reference)
void	ADCSetMode (adc_mode_t mode)
uint8_t	ADCSetPrescale (uint8_t prescalar)
void	ADCSetChannel (adc_channel_t adc_channel)
void	ADCBufferFlush (void)
void	ADCStartConversion (void)
void	ADCStartLowNoiseConversion (void)
void	ADCStopConversion (void)
uint8_t	ADCRead (uint16_t *value)
adc_mode_t	ADCGetMode (void)
int	ADCBufRead (uint16_t buf, uint16_t read)
int	ADCBufWrite (uint16_t buf, uint16_t write)
void	ADCBufInit (uint16_t *buf)
Variables
uint8_t	adc_sleep_mode = SLEEP_MODE_ADC
adc_mode_t	current_mode = ADC_OFF
uint16_t *	ADC_buffer = NULL
enum	adc_channel_type { ADC0 = 0, ADC1 = 1, ADC2 = 2, ADC3 = 3, ADC4 = 4, ADC5 = 5, ADC6 = 6, ADC7 = 7, ADC0 = 0, ADC1 = 1, ADC2 = 2, ADC3 = 3, ADC4 = 4, ADC5 = 5, ADC6 = 6, ADC7 = 7, ADC_MAX_CHANNEL = 8 }
	enum declaring possible ADC channels More...

Detailed Description

ATmega128 On-Chip ADC.

Define Documentation

#define ADC_PRESCALE_DIV2 0x00

0x01,0x00 -> CPU clk/2

Definition at line 97 of file adc.h.

Referenced by ADCSetPrescale().

#define ADC_PRESCALE_DIV4 0x02

0x02 -> CPU clk/4

Definition at line 98 of file adc.h.

Referenced by ADCSetPrescale().

#define ADC_PRESCALE_DIV8 0x03

0x03 -> CPU clk/8

Definition at line 99 of file adc.h.

Referenced by ADCSetPrescale().

#define ADC_PRESCALE_DIV16 0x04

0x04 -> CPU clk/16

Definition at line 100 of file adc.h.

Referenced by ADCSetPrescale().

#define ADC_PRESCALE_DIV32 0x05

0x05 -> CPU clk/32

Definition at line 101 of file adc.h.

Referenced by ADCSetPrescale().

#define ADC_PRESCALE_DIV64 0x06

0x06 -> CPU clk/64

Definition at line 102 of file adc.h.

Referenced by ADCSetPrescale().

#define ADC_PRESCALE_DIV128 0x07

0x07 -> CPU clk/128

Definition at line 103 of file adc.h.

Referenced by ADCSetPrescale().

#define ADC_INITIAL_CHANNEL ADC0

Definition at line 99 of file adc.c.

Referenced by ADCInit().

#define ADC_INITIAL_REF AVCC

Definition at line 103 of file adc.c.

Referenced by ADCInit().

#define ADC_INITIAL_MODE SINGLE_CONVERSION

Definition at line 107 of file adc.c.

Referenced by ADCInit().

#define ADC_INITIAL_PRESCALE ADC_PRESCALE_DIV64

Definition at line 111 of file adc.c.

Referenced by ADCInit().

#define ADC_BUF_SIZE 16

Definition at line 114 of file adc.c.

Referenced by ADCBufRead(), ADCBufWrite(), and ADCInit().

#define AVR_SLEEP_CTRL_REG MCUCR

Definition at line 123 of file adc.c.

Referenced by ADCStartLowNoiseConversion().

#define _adc_buf_head ADC_BUF_SIZE

Definition at line 141 of file adc.c.

Referenced by ADCBufInit(), ADCBufRead(), and ADCBufWrite().

#define _adc_buf_tail (ADC_BUF_SIZE+1)

Definition at line 142 of file adc.c.

Referenced by ADCBufInit(), ADCBufRead(), and ADCBufWrite().

Typedef Documentation

typedef enum adc_ref_type adc_ref_t

Definition at line 61 of file adc.h.

typedef enum adc_mode_type adc_mode_t

Definition at line 79 of file adc.h.

typedef enum adc_channel_type adc_channel_t

Definition at line 95 of file adc.h.

Enumeration Type Documentation

enum adc_ref_type

Enumerator:

AVCC
AREF
INTERNAL_256

Definition at line 54 of file adc.h.

enum adc_mode_type

Enumerator:

ADC_OFF
FREE_RUNNING
SINGLE_CONVERSION
ADC_OFF
FREE_RUNNING_T0
FREE_RUNNING_T1
FREE_RUNNING_T2
FREE_RUNNING_EXT
SINGLE_CONVERSION

Definition at line 72 of file adc.h.

enum adc_channel_type

enum declaring possible ADC channels

Enumerator:

ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
ADC_MAX_CHANNEL

Definition at line 83 of file adc.h.

Function Documentation

void ADCInit ( void )

Definition at line 190 of file adc.c.

void ADCSetRef ( adc_ref_t reference )

Definition at line 213 of file adc.c.

References ADCStopConversion(), AREF, AVCC, cbi, INTERNAL_256, and sbi.

Referenced by ADCInit().

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void ADCSetMode ( adc_mode_t mode )

Definition at line 236 of file adc.c.

Referenced by ADCInit(), and ADCStartLowNoiseConversion().

uint8_t ADCSetPrescale ( uint8_t prescalar )

Definition at line 253 of file adc.c.

References ADC_PRESCALE_DIV128, ADC_PRESCALE_DIV16, ADC_PRESCALE_DIV2, ADC_PRESCALE_DIV32, ADC_PRESCALE_DIV4, ADC_PRESCALE_DIV64, ADC_PRESCALE_DIV8, ADCStopConversion(), cbi, and sbi.

Referenced by ADCInit().

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void ADCSetChannel ( adc_channel_t adc_channel )

Definition at line 307 of file adc.c.

References inb, and outb.

Referenced by ADCInit().

void ADCBufferFlush ( void )

Definition at line 316 of file adc.c.

References ADC_buffer, and ADCBufInit().

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void ADCStartConversion ( void )

Definition at line 321 of file adc.c.

void ADCStartLowNoiseConversion ( void )

Definition at line 326 of file adc.c.

References _BV, adc_sleep_mode, ADCSetMode(), AVR_SLEEP_CTRL_REG, sbi, and SINGLE_CONVERSION.

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void ADCStopConversion ( void )

Definition at line 346 of file adc.c.

References cbi, current_mode, FREE_RUNNING, and sbi.

Referenced by ADCSetMode(), ADCSetPrescale(), and ADCSetRef().

uint8_t ADCRead ( uint16_t * value )

Definition at line 360 of file adc.c.

References ADC_buffer, and ADCBufRead().

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adc_mode_t ADCGetMode ( void ) [inline]

Definition at line 365 of file adc.c.

References current_mode.

int ADCBufRead	(	uint16_t *	buf,
		uint16_t *	read
	)		`[inline]`

Definition at line 146 of file adc.c.

References _adc_buf_head, _adc_buf_tail, and ADC_BUF_SIZE.

int ADCBufWrite	(	uint16_t *	buf,
		uint16_t *	write
	)		`[inline]`

Definition at line 159 of file adc.c.

References _adc_buf_head, _adc_buf_tail, and ADC_BUF_SIZE.

void ADCBufInit ( uint16_t * buf )

Definition at line 172 of file adc.c.

References _adc_buf_head, and _adc_buf_tail.

Referenced by ADCBufferFlush(), and ADCInit().

Variable Documentation

uint8_t adc_sleep_mode = SLEEP_MODE_ADC

Definition at line 117 of file adc.c.

Referenced by ADCStartLowNoiseConversion().

adc_mode_t current_mode = ADC_OFF

Definition at line 130 of file adc.c.

Referenced by ADCGetMode(), ADCSetMode(), and ADCStopConversion().

uint16_t* ADC_buffer = NULL

Definition at line 144 of file adc.c.

Referenced by ADCBufferFlush(), ADCInit(), and ADCRead().

All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Defines

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