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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.
- Return values
0 – On success.
-EINVAL – If a parameter with an invalid value has been provided.
-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.
- Return values
0 – On success.
-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 dac_channel_setup(const struct device *dev, const struct dac_channel_cfg *channel_cfg)