TC65 JAVA User's Guide

s

Strictly confidential / Released

 

5.6.2Manual Shutdown

The module can be switched off manually with the AT command, at^smso or when using the TC65 terminal by pressing the ignition key for a period of time (see [4]). In these cases the midlets destroyApp method is called and the application has 5s time to clean up and call the notifydestroy method. After the 5s the VM is shut down.

5.6.3Restart after Switch Off

When the module is switched off without setting an alarm time (see the AT Command Set [3]), e.g. after a power failure, external hardware must restart the module with the Ignition line (IGT). The Hardware Interface Description [4] explains how to handle a switched off situation.

5.7Special AT Command Set for Java Applications

For the full AT command set refer to [3]. There are differences in the behaviour AT commands issued from a Java application in comparison to AT commands issued over a serial interface.

5.7.1Switching from Data Mode to Command Mode

Cancellation of the data flow with “+++” is not available in Java applications, see [3] for details. To break the data flow use breakConnection(). Refer to \wtk\doc\index.html [5].

5.7.2Mode Indication after MIDlet Startup

After starting a module without autobauding on, the startup state is indicated over the serial interface. Similarly, after MIDlet startup the module sends its startup state (^SYSSTART, ^SYSSTART ALARM MODE etc.) to the MIDlet. This is done via a URC to the AT Command API instance which executes the very first AT Command from within Java. To read this URC it is necessary to register a listener (see [5]) on this AT Command API instance before passing the first AT Command.

5.7.3Long Responses

The AT Command API can handle responses of AT commands up to a length of 1024 bytes. Some AT commands have responses longer than 1024 bytes, for these responses the Java application will receive an Exception.

Existing workarounds:

•Instead of listing the whole phone book, read the entries one by one

•Instead of listing the entire short message memory, again list message after message

•Similarly, read the provider list piecewise

•Periods of monitoring commands have to be handled by Java, e.g. at^moni, at^smong. These AT commands have to be used without parameters, e.g. for at^moni the periods must be implemented in Java.

TC65 JAVA User's Guide_V05

Page 27 of 90

26.09.2005

Page 26 Page 28
Page 27
Image 27
Siemens TC65 manual Manual Shutdown, Restart after Switch Off, Special AT Command Set for Java Applications, Long Responses
Page 26 Page 28

TC65 specifications

The Siemens TC65 is a compact and powerful GSM/GPRS module designed for a wide range of mobile communication applications. With its robust features, the TC65 perfectly meets the growing demands for connectivity in various industries, including automotive, telematics, and industrial automation.

A standout feature of the TC65 is its compact size, allowing it to be easily integrated into various devices without compromising on performance. The module supports GSM (Global System for Mobile Communications) and GPRS (General Packet Radio Service), providing reliable and efficient voice and data transmission.

One of the key technologies incorporated in the TC65 is its integrated TCP/IP stack, which allows for seamless internet connectivity and enables application developers to create IoT solutions with ease. This capability is essential for remote monitoring, data logging, and other applications that require continuous data exchange.

The TC65 also boasts extensive multimedia capabilities, including support for SMS, MMS, and voice calls. This makes it suitable for applications that require not only data transmission but also communication features. Additionally, it supports various codecs for voice compression, ensuring high-quality audio in voice applications.

Enhanced security features are another highlight of the TC65. It incorporates comprehensive security protocols to safeguard data transmission, making it suitable for sensitive applications in finance, healthcare, and other critical sectors. The module also includes an integrated SIM application toolbox that supports the development of secure and customizable applications.

For developers, the TC65 offers an easy-to-use software development kit (SDK), simplifying the process of application development. This means that businesses can quickly create and deploy solutions tailored to their specific needs.

The module operates across a wide voltage range and is designed to tolerate challenging environmental conditions, making it ideal for industrial use. It supports various interfaces, including UART, GPIO, and I2C, enabling it to connect with a variety of peripherals and sensors, thus expanding its usability.

In summary, the Siemens TC65 combines compact design, versatile communication capabilities, advanced security features, and developer-friendly resources, making it an excellent choice for anyone looking to implement reliable and sophisticated GSM/GPRS communication in their applications. The TC65 is a valuable asset in the evolving landscape of connected devices and IoT solutions.
Top Page Image Contents