TC65 JAVA User's Guide | s |
Strictly confidential / Released |
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12 Java Tutorial
This small tutorial includes explanations on how to use the AT Command API and suggestions for programming MIDlets. The developer should read about MIDlets, Threads and AT commands as a complement to this tutorial.
12.1Using the AT Command API
Perhaps the most important API for the developer is the AT command API. This is the API that lets the developer issue commands to control the module. This API consists of the ATCommand class and the ATCommandListener and ATCommandResponseListener interfaces. Their javadocs can be found in …\wtk\doc\html\index.html, [5].
12.1.1Class ATCommand
The ATCommand class supports the execution of AT commands in much the same way as they would be executed over a serial interface. It provides a simple way to send strings directly to the device’s AT parsers.
12.1.1.1Instantiation with or without CSD Support
There can be only exactly as many ATCommand instances as there are parsers on the device. If there are no more parsers available, the ATCommand constructor will throw ATCommandFailedException. All AT parser instances support CSD. However from a Java application point of view it may make sense to have one dedicated instance for CSD call handling. Therefore, and also for historical reasons, only one parser with CSD support may be requested through the constructor. If more then one parser with CSD support is requested, the constructor will throw ATCommandFailedException.
try {
ATCommand atc = new ATCommand(false);
/* An instance of ATCommand is created. CSD is not explicitly
*requested. */
}catch (ATCommandFailedException e) { System.out.println(e);
}
The csdSupported() method returns the CSD capability of the connected instance of the device's AT parser.
boolean csd_support = atc.csdSupported();
release() releases the resources held by the instance of the ATCommand class. After calling this function the class instance cannot be used any more but the resources are free to be used by a new instance
TC65 JAVA User's Guide_V05 | Page 82 of 90 | 26.09.2005 |
