DAC¶
Overview¶
The DAC API provides access to Digital-to-Analog Converter (DAC) devices.
API Reference¶
-
group
dac_interface DAC driver APIs.
Functions
-
int
dac_channel_setup(const struct device *dev, const struct dac_channel_cfg *channel_cfg)¶ Configure a DAC channel.
It is required to call this function and configure each channel before it is selected for a write request.
- Parameters
dev – Pointer to the device structure for the driver instance.
channel_cfg – Channel configuration.
- Returns 0
On success.
- Returns -EINVAL
If a parameter with an invalid value has been provided.
- Returns -ENOTSUP
If the requested resolution is not supported.
-
int
dac_write_value(const struct device *dev, uint8_t channel, uint32_t value)¶ Write a single value to a DAC channel.
- Parameters
dev – Pointer to the device structure for the driver instance.
channel – Number of the channel to be used.
value – Data to be written to DAC output registers.
- Returns 0
On success.
- Returns -EINVAL
If a parameter with an invalid value has been provided.
-
struct
dac_channel_cfg¶ - #include <dac.h>
Structure for specifying the configuration of a DAC channel.
- param channel_id
Channel identifier of the DAC that should be configured.
- param resolution
Desired resolution of the DAC (depends on device capabilities).
-
int