DALI stack

Technical data

The architecture 

DALI stack implements DALI 2.0 functions

The DALI stack supports functions that are defined in the general requirements for DALI 2.0 operating and control devices. These include the following functions:

• Processing of all DALI commands from the DALI bus, monitoring of all corresponding error states on the DALI bus.
  Prerequisite for this: Transmission errors at bit/frame level must be detected and processed by the low-level driver.

• Processing of the corresponding light output for gearbox control with timing and sequence fade conditions

• Processing of the DALI controller via the bus interface; DALI short address assignment, including assignment of random addresses in coordination with the DALI controllers. The DALI stack provides configuration commands; the automatic configuration logic of the DALI device must be implemented in the HOST application in advance.

• Management of delays and other timing conditions related to DALI operations. Timings at bit/frame transmission level are managed by the low level driver, frame-level timings (timing conditions between multiple DALI frames) are managed by the DALI stack.

Power supply

• DALI Part 250 - Integrated bus power supply (Device Type 49)

Data specifications for LED drivers

• DALI part 251 - Memory bank 1 extension (device type 50)

• DALI Part 252 - Energy report (Device Type 51)

• DALI Part 253 - Diagnostics and maintenance (Device Type 52)

Properties

• Simple communication

• Simplifies development

• Communicates via the Stack API function

• Developed with ANSI-C

• DALI 2.0 (IEC 62386)

The device types

The DALI stack supports different device types and can be set up accordingly.

Mode I - Control device
Control devices 

• Single master technology in accordance with IEC 62386 Part 103

• Multimaster technology in accordance with IEC 62386 Part 103

Mode II - Input device
Input devices
The following input devices are supported:

• Part 301 (Push buttons)

• Part 303 (presence sensors)

• Part 304 (light sensors)

Mode III - Operating device
Control gears 

• Part 201 (Flurescent lamps) device type 0

• Part 207 (LED Modules) device type 6

• Part 208 (Switching function) device type 7

• Part 209 (Color control) device type 8 RGBWAF Only

(The specifications may vary slightly)

The requirements

Hardware requirements

• The library works with a stack size between 1 and 1.5 kByte

• Two GPIOs (one with interrupt)

• A timer with a width of at least 24 bits with an associated timer interrupt

• The DALI-2 library requires support for non-volatile memory of at least 526 bytes

The DALI stack runs on a variety of processors. Due to this variety, we are only listing those that we have already successfully tested:

Microchip

• ATSAMD21G17D

• ATSAME54P20A

Renesas

• RA2

• RA6

STMicroelectronics

• STM32G071

• STM32G474

• STM32L496

• STM32WB55

• STM32F091CCU7

The list is constantly being expanded.

If you use a processor in your project that is not listed here, we will be happy to check the possibilities with our DALI stack free of charge.

If you have any questions, just give us a call.
We look forward to talking to you:
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