Siemens AC65 Manuel D’Utilisation

13.1 Using the AT Command API

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2008-02-25

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An AT command is sent to the device by using the send() method. The AT command is sent
as a string which must include the finalizing line feed "\r" or the corresponding line end charac-
ter. 

This send function is a blocking call, which means that the calling thread will be interrupted until
the module returns a response. The function returns the response, the result code of the AT
command, as a string. 

Occasionally it may be infeasible to wait for an AT command that requires some time to be pro-
cessed, such as AT+COPS. There is a second, non-blocking, send function which takes a sec-
ond parameter in addition to the AT command. This second parameter is a callback instance,
ATCommandResponseListener.  Any response to the AT command is delivered to the callback
instance when it becomes available. The method itself returns immediately. The ATComman-
dResponseListener and the non-blocking send method are described in 

Note: Using the send methods with strings with incorrect AT command syntax will cause errors.

String response = atc.send(“at+cpin?\r”);

/* method returns when the module returns a response */

System.out.println(response);

#Possible response printed to System.out:

+CPIN: READY OK