Digital to Analog Converter

Functions for configuring and using the DAC peripheral. More...

Enumerations
enum	dac_channel_mask_t { DAC_CHANNEL_NONE = 0 , DAC_CHANNEL_0 = 1 , DAC_CHANNEL_1 = 2 , DAC_CHANNEL_BOTH = 3 }

Functions
void	dac_init (void)
	Initializes the DAC peripheral, but does not enable it.
void	dac_enable (dac_channel_mask_t channelmask)
	Enables the DAC channels specified in the mask, and disables others.
bool	dac_is_enabled (void)
	Checks if the DAC peripheral is currently enabled.
void	dac_set_analog_value (uint16_t channel, uint16_t value)
	Set the analog value of the DAC.
void	dac_disable (uint16_t channel)
	Disables the given DAC channel.

Detailed Description

Functions for configuring and using the DAC peripheral.

Function Documentation

dac_disable()

void dac_disable

(

uint16_t

channel

)

Disables the given DAC channel.

Warning

Currently only supports the DAC on VOUT[0]

dac_enable()

void dac_enable

(

dac_channel_mask_t

channelmask

)

Enables the DAC channels specified in the mask, and disables others.

Parameters

channelmask

A bitmask of the channels to enable: 1 for channel 0, 2 for channel 1, 3 for both channels. For MCUs with only one DAC channel, this parameter is ignored.

dac_init()

void dac_init

(

void

)

Initializes the DAC peripheral, but does not enable it.

Parameters

channel

The DAC channel to enable.

Warning

Currently only supports the DAC on VOUT[0]

TODO: Figure out appropriate clock setup on SAM D51

dac_is_enabled()

bool dac_is_enabled

(

void

)

Checks if the DAC peripheral is currently enabled.

Returns

true if the DAC is enabled, false if it is not.

dac_set_analog_value()

void dac_set_analog_value	(	uint16_t	channel,
		uint16_t	value )

Set the analog value of the DAC.

Parameters

channel	The DAC channel to set.
value	The value to set the DAC to. The range is platform-dependent: On SAM L21, the valid range is from 0 to 4095. On SAM D21 and D11, the valid range is from 0 to 1023. In both cases, 0 is 0V and the maximum value is VDDANA.