DALI

DALI interface. More...

Topics
	DALI Driver Backend API

Files
file	dali.h
	Digital Addressable Lighting Interface (DALI) driver API.

Data Structures
struct	dali_frame
	DALI frame structure. More...

Typedefs
typedef void(*	dali_receive_callback_t) (const struct device *dev, struct dali_frame frame, void *user_data)
	Defines the application callback handler function signature for receiving a DALI frame.
typedef void(*	dali_transmit_callback_t) (const struct device *dev, int error, void *user_data)
	Defines the application callback handler function signature for transmitting a DALI frame.

Enumerations
enum	dali_event_type {   DALI_FRAME_CORRUPT , DALI_FRAME_BACKWARD , DALI_FRAME_GEAR , DALI_FRAME_DEVICE ,   DALI_FRAME_FIRMWARE , DALI_EVENT_BUS_FAILURE , DALI_EVENT_BUS_IDLE }
	DALI frame types. More...

Functions
int	dali_set_receive_callback (const struct device *dev, dali_receive_callback_t callback, void *user_data)
	Set a callback function that receives frames from the DALI bus.
int	dali_transmit (const struct device *dev, const struct dali_frame *frame, dali_transmit_callback_t callback, void *user_data)
	Transmit a frame on the DALI bus.

Detailed Description

DALI interface.

Since

4.4

Version

0.1.0

The DALI API provides support for low-level communication according to IEC 62386.

Typedef Documentation

dali_receive_callback_t

typedef void(* dali_receive_callback_t) (const struct device *dev, struct dali_frame frame, void *user_data)

#include <zephyr/drivers/dali.h>

Defines the application callback handler function signature for receiving a DALI frame.

Parameters

dev	Pointer to device structure for the driver instance.
frame	Received DALI frame.
user_data	User data provided when the callback function was set.

dali_transmit_callback_t

typedef void(* dali_transmit_callback_t) (const struct device *dev, int error, void *user_data)

#include <zephyr/drivers/dali.h>

Defines the application callback handler function signature for transmitting a DALI frame.

Parameters

dev	Pointer to device structure for the driver instance.
error	Error code for the transaction

See also

dali_transmit

Parameters

user_data

User data provided when the frame was sent.

Enumeration Type Documentation

dali_event_type

enum dali_event_type

#include <zephyr/drivers/dali.h>

DALI frame types.

Enumerator
DALI_FRAME_CORRUPT	corrupt frame (transmit/receive)
DALI_FRAME_BACKWARD	backward 8bit frame (transmit/receive)
DALI_FRAME_GEAR	forward 16bit gear frame (transmit/receive)
DALI_FRAME_DEVICE	forward 24bit device frame (transmit/receive)
DALI_FRAME_FIRMWARE	forward 32bit firmware frame (transmit/receive)
DALI_EVENT_BUS_FAILURE	detected a bus failure (receive only)
DALI_EVENT_BUS_IDLE	detected that bus is idle again after failure (receive only)

Function Documentation

dali_set_receive_callback()

int dali_set_receive_callback	(	const struct device *	dev,
		dali_receive_callback_t	callback,
		void *	user_data )

#include <zephyr/drivers/dali.h>

Set a callback function that receives frames from the DALI bus.

Set a callback function for the DALI driver. Whenever a DALI frame is fully received, or a relevant bus event is detected, the callback function is called in the driver´s workqueue context. Only a single callback function per driver instance is supported.

Note

The callback function is invoked at the end of the stop condition. Interframe timings need to consider this.

Parameters

dev	Pointer to the DALI device structure for the driver instance.
callback	This function is called by the DALI driver whenever a frame is received or a relevant event detected.
user_data	User data to pass to callback function.

Return values

0	on success
-ENOSYS	if function not implemented

dali_transmit()

int dali_transmit	(	const struct device *	dev,
		const struct dali_frame *	frame,
		dali_transmit_callback_t	callback,
		void *	user_data )

#include <zephyr/drivers/dali.h>

Transmit a frame on the DALI bus.

Immediately start transmitting a DALI frame to the DALI bus. In case of an error, the driver will not automatically attempt to re-transmit the frame.

Parameters

dev	Pointer to the DALI device structure for the driver instance.
frame	DALI frame to transmit
callback	Optional callback for when the frame was successfully transmitted or a transmission error is detected. The callback function is called in the driver´s workqueue context. For the meaning of the callback´s err parameter refer to the return codes for dali_transmit.
user_data	User data to pass to callback function.

Return values

0	on success
-EBUSY	if a frame transmission is active
-EINVAL	if invalid parameter was passed to function
-ECANCELED	if transmission yielded to a dominant frame
-ECOMM	if collision occurred during transmission
-EAGAIN	if bus is not available
-ENOSYS	if function not implemented