# At commands using in i2c

**URL:** <https://forum.sierrawireless.com/t/at-commands-using-in-i2c/6289>\
**Category:** Legacy AirPrime modules\
**Created:** [April 26, 2013, 12:41pm UTC](https://forum.sierrawireless.com/t/at-commands-using-in-i2c/6289 "2013-04-26T12:41:54Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![prakash12345](https://avatars.discourse-cdn.com/v4/letter/p/e36b37/32.png) [@prakash12345](https://forum.sierrawireless.com/u/prakash12345)\
**Post date:** [April 26, 2013, 12:41pm UTC](https://forum.sierrawireless.com/t/at-commands-using-in-i2c/6289/1 "2013-04-26T12:41:54Z")

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Hi,  
i am beginner to developer studio tool. I am using Open\_AT\_Application\_Framework\_v2-51\_Full\_Installer downloaded from sierra site.  
I have been used sample application from the Developer studio. In i2c application you are using AT+READ,AT+WRITE,AT+SETMODE like that at commands. In the at firmware guide ,wip at guide the commands are not avilable.Where can i able to see those type of commands or these are created by user? can you explain me

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**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [April 26, 2013, 1:39pm UTC](https://forum.sierrawireless.com/t/at-commands-using-in-i2c/6289/2 "2013-04-26T13:39:08Z")

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> [@prakash12345](#):
>
> I have been used sample application from the Developer studio.

Which sample, exactly ❓

> [@](#):
>
> In i2c application you are using AT+READ,AT+WRITE,AT+SETMODE like that at commands. In the at firmware guide ,wip at guide the commands are not avilable.

These are Custom commands created by the application.

They are described in the Documentation (HTML file) for the sample.

> [@](#):
>
> these are created by user?

Yes - see above!

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<div class="post-metadata">

**Author:** ![prakash12345](https://avatars.discourse-cdn.com/v4/letter/p/e36b37/32.png) [@prakash12345](https://forum.sierrawireless.com/u/prakash12345)\
**Post date:** [April 30, 2013, 10:11am UTC](https://forum.sierrawireless.com/t/at-commands-using-in-i2c/6289/3 "2013-04-30T10:11:41Z")

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I am using sample projects given in Devstudio, New-\> openATproject-\>New open AT project-\>Target platform configuration-\>Sample selection-\>externalstorageI2C

In this sample lot of ADL functions like adl\_atCmdSubscribe();adl\_InitGetType ();adl\_atSendStdResponse (); etc, are used in which file shall i get definition of these function? or else those functions arepredefined.

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**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [April 30, 2013, 11:44am UTC](https://forum.sierrawireless.com/t/at-commands-using-in-i2c/6289/4 "2013-04-30T11:44:47Z")

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All ADL functions, and associated data types, etc, are documented in the ADL User Guide.

Also in the Open-AT tutorial book.