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AS7225

Smart Lighting Command Interface

Datasheet

• PUBLIC

DS000496

• v2-00 • 2019-Jun-28

│ 60

Command

Direction

Description

Format

Value Range

Default

ATLXSL1

R/W

Write a calibration

scalar K1 for external

ambient light sensor

Formula

K0 & K1>0:

LUX=K0*ADC0-

K1*ADC1

K0=0: LUX=K1*ADC1

K1=0:

LUX=K0*ADC0

(TSL2572 only)

DEZ

≥0

Firmware Update

ATFWU

Starts firmware update

process and transfer

the bin file checksum

ATFW

Download new

firmware

Up to 10 bytes of

firmware image at a

time (20 hex bytes with

no leading or trailing

0x)

Repeat command till all

56k bytes of firmware

are downloaded

HEX STRING

(without 0x), max 10 bytes

ATFWS

Test the checksum on

the non-active FW

partition and if correct

switches active

partition. This is a

toggle and can be used

to toggle between 2

firmware partitions.

Note the first 5 bytes in

page 0 are not

touched. It is only

temporary switch and

must be used to check

the new firmware

whether the

communication works!

ATFWL

This command locks

the current firmware to

start on power cycles. It

rewrites the first 5

bytes in page 0!

ATFWC

This command gives

information about the

current firmware state

HEX

Bit0

– Checksum of non-active firmware

Bit1

– Error occurred

Bit2

– Is bank 1 active

Bit3

– Not used

Bit4

– Current firmware is locked

Bit5

– 56k bytes transferred

Bit6

–Not used

Bit7

– Firmware update active

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