AS7262 datasheet(31/47 Pages) AMSCO

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Page 31

[v1-00] 2016-Dec-16

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AS7262 − Detailed Description

AT Command Interface

The microprocessor interface to control the Visible Spectral_ID

sensor is via the UART, using the AT Commands across the UART

interface.

The 6-channel Spectral _ID sensor provides a text-based serial

command interface borrowed from the “AT Command” model

used in early Hayes modems. For example:

• Read DATA value: ATDATA

→ <data>OK

• Set the gain of the sensor to 1x: ATGAIN =0

→ OK

The “AT Command Interface Block Diagram”, shown below

between the network interface and the core of the system,

provides access to the Spectral_ID engine’s control and

configuration functions.

Figure 30:

AT Command Interface Block Diagram

In Figure 31, numeric values may be specified with no leading

prefix, in which case they will be interpreted as decimals, or with

a leading “0x” to indicate that they are hexadecimal numbers,

or with a leading “‘b” to indicate that they are binary numbers.

The commands are loosely grouped into functional areas. Texts

appearing between angle brackets (‘<‘ and ‘>‘) are commands

or response arguments. A carriage return character, a linefeed

character, or both may terminate commands and responses.

Note that any command that encounters an error will generate

the “ERROR” response shown, for example, in the NOP

command at the top of the first table, but has been omitted

elsewhere in the interest of readability and clarity.

AT Command Interface

Spectral_ID

Engine

Command

Interface

μP

AS726x

AT Command Interface

AT Commands

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