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Open AT ^® Release version:
4.10

Sample - Secured Control

Changes
Dependencies
Application Description

Changes

V2.10 : Initial revision
V3.00 : Multi-Uart support ; MultiApp library support
V4.00 : New call stack declaration format

Dependencies

This sample depends on the following libraries :

MultiApp
This MultiApp sample library provides start/stop mechanism to handle several running ADL applications.

Application Description

This application protects AT+WDWL and AT+WOPEN commands with a password.

As this application uses the MultiApp library, the following start/stop command has to be used to control the application execution.

AT+SECSTART (Secured Control start/stop command)

Command	Answers
AT+SECSTART?	+SECSTART: <state> OK
AT+SECSTART=?	+SECSTART: (0-1) OK
AT+SECSTART= <state>	+CME ERROR: 3 or OK

Parameter	Values range	Description	Default value
state	0-1	The current application running state. This parameter is stored in non-volatile memory.	0

The init entry point sent to the MultiApp library is the sc_init() function. The start/stop entry points linked to the +SECSTART command are the sc_run() and sc_stop() functions.

When the application is enabled, it subscribes to the Application safe mode service, and filters the AT+WDWL and AT+WOPEN=0/5 commands. A new syntax is required for these commands :

AT+WOPEN (Open AT control command)

Command	Answers
AT+WOPEN?	+WOPEN: <state> , <password> OK
AT+WOPEN=?	+WOPEN: (0-6) , (20) OK
AT+WOPEN= <state> , <password>	+CME ERROR: 3 or OK

Parameter	Values range	Description	Default value
state	0-6	cf +WOPEN documentation	mandatory
password	20	Password needed on modes 0 and 5	mandatory

AT+WDWL (Download command)

Command	Answers
AT+WDWL=?	+WDWL: (20) OK
AT+WDWL= <password>	+CME ERROR: 3 or OK

Parameter	Values range	Description	Default value
password	20	Password needed to start XModem downloader	mandatory

The password is defined by the following command :

AT+PASSWORD (Change Password command)

Command	Answers
AT+PASSWORD=?	+PASSWORD: (20) , (20) OK
AT+PASSWORD= <oldpassword> , <newpassword>	+CME ERROR: 3 or OK

Parameter	Values range	Description	Default value
oldpassword	20	Current password ("openat" by default)	mandatory
newpassword	20	New password	mandatory

Updated: Tue Sep 19 17:14:31 CEST 2006;