AN4461 datasheet(42/70 Pages) STMICROELECTRONICS

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User interface

AN4461

42/70

DocID026130 Rev 2

User interface

The user can interact with the board via multiple interfaces: the DALI, serial and 0 - 10 V

interface. While the 0 - 10 V interface allows to remotely control the LED current, both DALI

and serial interfaces allow the configuration of several operating and start-up parameters.

The DALI and 0 - 10 V interface are mutually exclusive and the user can select which one to

enable. For safety reasons, the DALI, serial and 0 - 10 V interfaces are isolated.

The serial line is convenient to connect the demonstration board to additional interfaces,

such as Bluetooth®, power line modems, Wi-Fi, etc.

The user can quickly monitor the status of the board by looking at the two status LEDs (red,

green) installed on the board.

9.1

Status LEDs

There are two status LEDs on the board, one green and one red.

•

Green LED (status): active when the input power is correct and the STLUX385A device

is running.

–

LED on: STLUX385A running.

–

LED off: STLUX385A is in IDLE mode.

–

LED toggling (1 sec. on, 1 sec. off): debug mode active. The board is not

operating.

•

Red LED (failure): used to report an error or the intervention of a protection to preserve

the hardware. Once the error has been detected (e.g. via terminal command “st”), fixed

and the “co” command line is used, the red LED goes off.

9.2

List of supported DALI commands

The internal DALI stack has implemented all the standard commands defined into DALI

standard. Also the LED extension is implemented directly on the STLUX firmware.

Table 12. List of supported DALI commands

Command number

Command code

Mnemonic command name

YAAA AAA0 XXXX XXXX

DIRECT ARC POWER CONTROL

YAAA AAA1 0000 0000

OFF

YAAA AAA1 0000 0001

YAAA AAA1 0000 0010

DOWM

YAAA AAA1 0000 0011

STEP UP

YAAA AAA1 0000 0100

STEP DOWN

YAAA AAA1 0000 0101

RECALL MAX LEVEL

YAAA AAA1 0000 0110

RECALL MIN LEVEL

YAAA AAA1 0000 0111

STEP DOWN AND OFF

YAAA AAA1 0000 1000

ON AND STEP UP

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