DAC

DAC library. More...

Macros
#define	NUM_DAC_CHANNELS   2U
#define	DAC_MAX_VALUE   4095U
#define	DAC_VREF_MV   3300U

Enumerations
enum	DacChannel { DAC_CHANNEL1 = 0 , DAC_CHANNEL2 = 1 }
	DAC channel identifiers. More...

Functions
StatusCode	dac_init (void)
	Initialize the DAC peripheral. More...
StatusCode	dac_enable_channel (DacChannel channel)
	Enable a specific DAC channel. More...
StatusCode	dac_set_raw (DacChannel channel, uint16_t value)
	Set DAC output using raw 12-bit value. More...
StatusCode	dac_set_voltage (DacChannel channel, uint16_t voltage_mv)
	Set DAC output using millivolt value. More...
StatusCode	dac_get_raw (DacChannel channel, uint16_t *value)
	Read back the current DAC setting (raw value) More...
StatusCode	dac_get_voltage (DacChannel channel, uint16_t *voltage_mv)
	Read back the current DAC setting (voltage in mV) More...
StatusCode	dac_disable_channel (DacChannel channel)
	Disable a specific DAC channel. More...

Detailed Description

DAC library.

Enumeration Type Documentation

DacChannel

enum DacChannel

DAC channel identifiers.

Enumerator
DAC_CHANNEL1	DAC Channel 1 (PA4)
DAC_CHANNEL2	DAC Channel 2 (PA5)

Function Documentation

dac_disable_channel()

StatusCode dac_disable_channel

(

DacChannel

channel

)

Disable a specific DAC channel.

Parameters

channel

DAC channel to disable

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if channel is invalid STATUS_CODE_UNINITIALIZED if DAC not initialized

dac_enable_channel()

StatusCode dac_enable_channel

(

DacChannel

channel

)

Enable a specific DAC channel.

Parameters

channel

DAC channel to enable (DAC_CHANNEL_1 or DAC_CHANNEL_2)

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if channel is invalid STATUS_CODE_UNINITIALIZED if DAC not initialized STATUS_CODE_RESOURCE_EXHAUSTED if channel already enabled

dac_get_raw()

StatusCode dac_get_raw	(	DacChannel	channel,
		uint16_t *	value
	)

Read back the current DAC setting (raw value)

Parameters

channel	DAC channel to read
value	Pointer to store the current raw value

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if parameters are invalid STATUS_CODE_UNINITIALIZED if DAC not initialized or channel not enabled

dac_get_voltage()

StatusCode dac_get_voltage	(	DacChannel	channel,
		uint16_t *	voltage_mv
	)

Read back the current DAC setting (voltage in mV)

Parameters

channel	DAC channel to read
voltage_mv	Pointer to store the current voltage in millivolts

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if parameters are invalid STATUS_CODE_UNINITIALIZED if DAC not initialized or channel not enabled

dac_init()

StatusCode dac_init

(

void

)

Initialize the DAC peripheral.

Returns

STATUS_CODE_OK if successful STATUS_CODE_RESOURCE_EXHAUSTED if already initialized

dac_set_raw()

StatusCode dac_set_raw	(	DacChannel	channel,
		uint16_t	value
	)

Set DAC output using raw 12-bit value.

Parameters

channel	DAC channel to set
value	Raw 12-bit value (0-4095)

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if channel invalid or value out of range STATUS_CODE_UNINITIALIZED if DAC not initialized or channel not enabled

dac_set_voltage()

StatusCode dac_set_voltage	(	DacChannel	channel,
		uint16_t	voltage_mv
	)

Set DAC output using millivolt value.

Parameters

channel	DAC channel to set
voltage_mv	Voltage in millivolts (0-3300)

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if channel invalid or voltage out of range STATUS_CODE_UNINITIALIZED if DAC not initialized or channel not enabled