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Siemens XT75, TC65, AC65, XT65 manual 3 UDP, Gpio, Restrictions Flash File System, Memory

Models: AC65 XT65 XT75 TC65

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Java User’s Guide

5.10 GPIO

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5.9.2File

The System.out print can be redirected into log files within the module’s flash file system. The output will be written alternatingly into two files which can be concatenated afterwards to have a single log file.

Writing the output to a file will slow down the virtual machine. To reduce the impact of logging the output may be written first to a buffer before it is written to the file (buffered mode). The buff- ered output is written either if the buffer is filled or after 200 ms. If the buffer is not used (secure mode) the output is written directly to the file. Because excessive writing to the module’s flash file system decreases the life time of the flash memory, we recommend using the System.out to file redirection only during development phases.

5.9.3UDP

Redirection to a UDP socket is used in conjunction with the debugger. UDP is used by default when using on-device-debugging (Chapter 10). This can be changed by editing the emulator’s ini-file.

If the output is redirected to an UDP socket, any changes of the System.out configuration are ignored while the Virtual Machine is running. The UDP Socket settings will not be stored in the module.

5.10GPIO

The GPIO Java API (classes: InPort, OutPort, InPortListener, StartStopPulseCounter, Limit- PulseCounter and LimitPulseCounterListener) is a replacement for the GPIO AT commands (AT^SPIO, AT^SCPIN, ...). Using these classes frees up AT command resources and improves performance. Both APIs can only be used alternatively. Of course the basic system character- istics of a poll interval of 4.6ms (in SLEEP mode up to 2.7s) for pin state change detection does also apply here.

GPIO Java API is only supported in TC65.

5.11Restrictions

5.11.1Flash File System

The maximum length of a complete path name, including the path and the filename, is limited by the Flash file system on the module to 124 characters. It is recommended that names of classes and files be distinguished by more than case sensitivity.

5.11.2Memory

The CLDC 1.1 HI features a just-in-time compiler. This means that parts of the Java byte code which are frequently executed are translated into machine code to improve efficiency. This fea- ture uses up RAM space. There is always a trade off between code translation to speed up exe- cution and RAM space available for the application.

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2008-02-25

Confidential / Released

 

 

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Siemens XT75, TC65, AC65, XT65 manual 3 UDP, Gpio, Restrictions Flash File System, Memory
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AC65, XT65, XT75, 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.