UM1632 datasheet(6/32 Pages) STMICROELECTRONICS

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DALI information

UM1632

6/32

DocID024513 Rev 1

1.1.3

DALI stack layer

The DALI stack is the higher DALI layer, which implements DALI commands, DALI

structures, timing management and error management according to the DALI specification.

The most important feature of the DALI stack layer is the DALI commands. These

commands are used for:

•

Direct light control such as dimming, on/off switching, and scene selection.

•

Device configuration to set DALI variables, read device properties, address

assignments and query device status.

The DALI stack layer is fully implemented in microcontroller software.

1.2

STM8L DALI slave library overview

The STM8L DALI slave library contains instructions for implementing DALI protocol software

in STM8L microcontrollers.

The DALI slave library consists of two layers:

•

Upper layer (DALI stack layer)

•

Hardware layer (I/O pin driver layer)

The upper layer of the DALI slave library (also known as the DALI stack layer), consists of

routines for processing the required DALI commands and other necessary control functions

(including timing control, error management, memory management and light control).The

hardware layer (also known as the direct I/O pin driver layer), contains the physical layer

implementation. This is necessary because STM8L microcontrollers do not support DALI

communication peripherals.

UM1632 Datasheet(PDF) 6 Page - STMicroelectronics