ADC - Analog to Digital Converter

Analog to Digital Converter is able to capture analog signals and transform them into digital format with 10-bit resolution.

Macros
#define	ADC_MAX_VALUE   0x3FF
	Max value for ADC resolution. More...

Functions
bool	adc_check_eoc (volatile avr32_adc_t *adc, uint16_t channel)
	Check channel conversion status. More...
bool	adc_check_ovr (volatile avr32_adc_t *adc, uint16_t channel)
	Check channel conversion overrun error. More...
void	adc_configure (volatile avr32_adc_t *adc)
	Configure ADC. More...
void	adc_disable (volatile avr32_adc_t *adc, uint16_t channel)
	Disable channel. More...
void	adc_enable (volatile avr32_adc_t *adc, uint16_t channel)
	Enable channel. More...
uint32_t	adc_get_latest_value (volatile avr32_adc_t *adc)
	Wait for the next converted data and return its value. More...
bool	adc_get_status (volatile avr32_adc_t *adc, uint16_t channel)
	Get channel 0 to 7 status. More...
uint32_t	adc_get_value (volatile avr32_adc_t *adc, uint16_t channel)
	Get channel value. More...
void	adc_start (volatile avr32_adc_t *adc)
	Start analog to digital conversion. More...

#define ADC_MAX_VALUE   0x3FF

Max value for ADC resolution.

Referenced by b_light_get_value().

bool adc_check_eoc	(	volatile avr32_adc_t *	adc,
		uint16_t	channel
	)

Check channel conversion status.

Parameters

*adc	Base address of the ADC
channel	channel to check (0 to 7)

Returns

bool true if conversion not running false if conversion running

References Assert.

Referenced by adc_get_value().

bool adc_check_ovr	(	volatile avr32_adc_t *	adc,
		uint16_t	channel
	)

Check channel conversion overrun error.

Parameters

*adc	Base address of the ADC
channel	channel to check (0 to 7)

Returns

bool FAIL if an error occurred PASS if no error occurred

References Assert, FAIL, and PASS.

void adc_configure

(

volatile avr32_adc_t *

adc

)

Configure ADC.

Mandatory to call. If not called, ADC channels will have side effects

Parameters

*adc	Base address of the ADC

References Assert.

Referenced by accelerometer_init().

void adc_disable	(	volatile avr32_adc_t *	adc,
		uint16_t	channel
	)

Disable channel.

Parameters

*adc	Base address of the ADC
channel	channel to disable (0 to 7)

References adc_get_status(), and Assert.

Referenced by acc_get_value(), b_light_get_value(), and b_temperature_get_value().

void adc_enable	(	volatile avr32_adc_t *	adc,
		uint16_t	channel
	)

Enable channel.

Parameters

*adc	Base address of the ADC
channel	channel to enable (0 to 7)

References Assert.

Referenced by acc_get_value(), b_light_get_value(), and b_temperature_get_value().

uint32_t adc_get_latest_value

(

volatile avr32_adc_t *

adc

)

Wait for the next converted data and return its value.

Parameters

*adc	Base address of the ADC

Returns

The latest converted value (unsigned long)

References Assert.

bool adc_get_status	(	volatile avr32_adc_t *	adc,
		uint16_t	channel
	)

Get channel 0 to 7 status.

Parameters

*adc	Base address of the ADC
channel	channel to handle (0 to 7)

Returns

bool true if channel is enabled false if channel is disabled

References Assert.

Referenced by adc_disable().

uint32_t adc_get_value	(	volatile avr32_adc_t *	adc,
		uint16_t	channel
	)

Get channel value.

Parameters

*adc	Base address of the ADC
channel	channel to handle (0 to 7)

Returns

The value acquired (unsigned long)

References adc_check_eoc(), and Assert.

Referenced by acc_get_value(), b_light_get_value(), and b_temperature_get_value().

void adc_start

(

volatile avr32_adc_t *

adc

)

Start analog to digital conversion.

Parameters

*adc	Base address of the ADC

References Assert.

Referenced by acc_get_value(), b_light_get_value(), and b_temperature_get_value().