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AS7221

Smart Lighting Command Interface

Datasheet

• PUBLIC

DS000479

• v4-00 • 2019-Jun-28

│ 33

Figure 31:

Smart Lighting Command Interface

10.1

AT Commands

The command interface to control the AS7221 is via the UART, using AT commands across the UART

interface. The AT command interface block diagram, shown in Figure 31 between the network

interface and the core of the system, provides access to the AS7221

’s Cognitive Light Engine’s control

and configuration functions (see also chapter UART ).

In the command description below, numeric values may be specified with no leading prefix, in which

case they will be interpreted as decimals, with l

eading “0x” to indicate that they are hexadecimal

numbers, or with a leading “b” to indicate, that they are binary numbers. The commands are grouped

into functional areas Texts appearing between angle brackets (‘<’ and ‘>’) are commands or response

argument. A carriage return character, a linefeed character, or both may terminate commands to the

SLM. The SLM command output is a response followed by a linefeed character. Note that any

command that cannot interpreted or which encounters an error will generate

“ERROR” response.

Figure 32:

AT Commands

Command

Direction

Description

Format

Value Range

Default

Status and Basic Initialization

NOP

ATLIGHT

R/W

Enables/disables the

light (PWM output)

DEZ

1:ON, 0:OFF

UART

CLE

AS7221

Smart Lighting Command Interface

Network

Bridge

Smart Lighting

Command

BLE

WiFI

ZigBee

BacNet

KNX

etc.

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