Analog-to-digital Converter (ADC)

See Quickstart guide for SAM ADC driver.

Driver for the Analog-to-digital Converter. This driver provides access to the main features of the ADC controller.

Functions
void	adc_disable_all_channel (Adc *p_adc)
	Disable all ADC channel. More...
void	adc_disable_channel (Adc *p_adc, const enum adc_channel_num_t adc_ch)
	Disable the specified ADC channel. More...
void	adc_disable_interrupt (Adc *p_adc, const uint32_t ul_source)
	Disable ADC interrupts. More...
void	adc_enable_all_channel (Adc *p_adc)
	Enable all ADC channels. More...
void	adc_enable_channel (Adc *p_adc, const enum adc_channel_num_t adc_ch)
	Enable the specified ADC channel. More...
void	adc_enable_interrupt (Adc *p_adc, const uint32_t ul_source)
	Enable ADC interrupts. More...
uint32_t	adc_get_actual_adc_clock (const Adc *p_adc, const uint32_t ul_mck)
	Return the actual ADC clock. More...
uint32_t	adc_get_channel_status (const Adc *p_adc, const enum adc_channel_num_t adc_ch)
	Read the ADC channel status. More...
uint32_t	adc_get_channel_value (const Adc *p_adc, const enum adc_channel_num_t adc_ch)
	Read the ADC result data of the specified channel. More...
uint32_t	adc_get_interrupt_mask (const Adc *p_adc)
	Read ADC interrupt mask. More...
uint32_t	adc_get_latest_value (const Adc *p_adc)
	Read the last ADC result data. More...
Pdc *	adc_get_pdc_base (const Adc *p_adc)
	Get PDC registers base address. More...
void	adc_reset (Adc *p_adc)
	Reset ADC. More...
void	adc_set_resolution (Adc *p_adc, const enum adc_resolution_t resolution)
	Configure the conversion resolution. More...
void	adc_start (Adc *p_adc)
	Start analog-to-digital conversion. More...

void adc_disable_all_channel

(

Adc *

p_adc

)

Disable all ADC channel.

Parameters

p_adc

Pointer to an ADC instance.

void adc_disable_channel	(	Adc *	p_adc,
		const enum adc_channel_num_t	adc_ch
	)

Disable the specified ADC channel.

Parameters

p_adc	Pointer to an ADC instance.
adc_ch	ADC channel number.

void adc_disable_interrupt	(	Adc *	p_adc,
		const uint32_t	ul_source
	)

Disable ADC interrupts.

Parameters

p_adc	Pointer to an ADC instance.
ul_source	Interrupts to be disabled.

void adc_enable_all_channel

(

Adc *

p_adc

)

Enable all ADC channels.

Parameters

p_adc

Pointer to an ADC instance.

void adc_enable_channel	(	Adc *	p_adc,
		const enum adc_channel_num_t	adc_ch
	)

Enable the specified ADC channel.

Parameters

p_adc	Pointer to an ADC instance.
adc_ch	ADC channel number.

Referenced by configure_adc().

void adc_enable_interrupt	(	Adc *	p_adc,
		const uint32_t	ul_source
	)

Enable ADC interrupts.

Parameters

p_adc	Pointer to an ADC instance.
ul_source	Interrupts to be enabled.

uint32_t adc_get_actual_adc_clock	(	const Adc *	p_adc,
		const uint32_t	ul_mck
	)

Return the actual ADC clock.

Parameters

p_adc	Pointer to an ADC instance.
ul_mck	Main clock of the device (in Hz).

Returns

The actual ADC clock (in Hz).

uint32_t adc_get_channel_status	(	const Adc *	p_adc,
		const enum adc_channel_num_t	adc_ch
	)

Read the ADC channel status.

Parameters

p_adc	Pointer to an ADC instance.
adc_ch	ADC channel number.

Return values

1	if channel is enabled.
0	if channel is disabled.

uint32_t adc_get_channel_value	(	const Adc *	p_adc,
		const enum adc_channel_num_t	adc_ch
	)

Read the ADC result data of the specified channel.

Parameters

p_adc	Pointer to an ADC instance.
adc_ch	ADC channel number.

Returns

ADC value of the specified channel.

Referenced by main().

uint32_t adc_get_interrupt_mask

(

const Adc *

p_adc

)

Read ADC interrupt mask.

Parameters

p_adc

Pointer to an ADC instance.

Returns

The interrupt mask value.

uint32_t adc_get_latest_value

(

const Adc *

p_adc

)

Read the last ADC result data.

Parameters

p_adc

Pointer to an ADC instance.

Returns

ADC latest value.

Pdc* adc_get_pdc_base

(

const Adc *

p_adc

)

Get PDC registers base address.

Parameters

p_adc

Pointer to an ADC instance.

Returns

ADC PDC register base address.

References UNUSED.

void adc_reset

(

Adc *

p_adc

)

Reset ADC.

Parameters

p_adc

Pointer to an ADC instance.

void adc_set_resolution	(	Adc *	p_adc,
		const enum adc_resolution_t	resolution
	)

Configure the conversion resolution.

Parameters

p_adc	Pointer to an ADC instance.
resolution	ADC resolution.

References ADC_10_BITS, ADC_12_BITS, and resolution.

void adc_start

(

Adc *

p_adc

)

Start analog-to-digital conversion.

Note

If one of the hardware event is selected as ADC trigger, this function can NOT start analog to digital conversion.

Parameters

p_adc

Pointer to an ADC instance.

Referenced by main().