Siemens TC65 manual Pin I/O, Data Rates on RS-232 API

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TC65 JAVA User's Guide

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Strictly confidential / Released

 

5.9.2Pin I/O

The pin I/O test was designed to find out how fast a Java MIDlet can process URCs caused by Pin I/O and react to these URCs. The URCs are generated by feeding an input pin with an external frequency. As soon as the Java MIDlet is informed about the URC, it tries to regenerate the feeding frequency by toggling another output pin.

input pin

 

Test MIDlet

external frequency

 

 

ATCommandListener.

poll input pin

send URC

ATEvent()

 

 

set output pin

 

ATCommand.

 

send(...)

 

 

output pin

 

 

generated frequency

 

 

Figure 12: Test case for measuring Java MIDlet performance and handling pin-IO

The results of this test show that the delay from changing the state on the input pin to a state change on the output pin is at least around 50 ms, but that time strongly depends on the amount of garbage to collect and number of threads to be served by the virtual machine. Consequently, pin I/O is not suitable for generating or detecting frequencies.

5.9.3Data Rates on RS-232 API

For details about the software platform and interfaces refer to Chapter 4, "Software Platform". This section summarises limitations and preconditions for performance when using the interface CommConnection from package com.siemens.mp.io (refer to [5]).

The data rate on RS232 depends on the size of the buffer used for reading from and writing to the serial interface. It is recommended that method read (byte[ ] b) be used for reading from the serial interface. The recommended buffer size is 2kbyte. To achieve error free data transmission the flow control on CommConnection must be switched on: <autorts> and <autocts>, the same for the connected device.

Different use cases are listed to give an idea of the attainable data rates. All applications for measurement use only one thread and no additional activities other than those described were carried out in parallel.

TC65 JAVA User's Guide_V05

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Contents Java Users Guide September 26 Document Name TC65 Java Users GuideTC65 Java Users Guide TC65 Java Users GuideV05Table of Contents Maintenance 3.3.2Compile and Run a Program without a Java IDE Debug EnvironmentJava Security Java Tutorial Differences from the TC45Sun Java Studio Mobility 6 Switching Emulators TablesPreamble New solution OverviewRelated Documents Terms and Abbreviations Abbreviation DescriptionInstallation Installation CDSystem Requirements 1.2 WTK ComponentsModule Exchange Suite SDK and Java StudioSiemens Mobility Toolkit Installation Installing the Standard Development ToolkitInstalling the Smtk Environment Installing Sun Java Studio Mobility Installing Eclipse Installing Borland JBuilder XInstalling Module Exchange Suite MES Smtk Uninstall UpgradesSoftware Platform Software Architecture3 DAC/ADC Interfaces 1 ASC0 Serial DeviceGeneral Purpose I/O 4 ASC1Media JVM InterfacesIP Networking Other InterfacesData Flow of a Java Application Running on the Module ADCHandling Interfaces and Data Service Resources Module StatesState 2 No Java Running, General Purpose I/O and I2C State 1 Default No Java RunningState 4 Default Java Application Active State 3 No Java Running, General Purpose I/O and SPIState 5 Java Application Active, General Purpose I/O and I2C Module State Transitions Maintenance IP ServicePower Saving ChargingShutdown Airplane ModeAlarm Automatic ShutdownSwitching from Data Mode to Command Mode Restart after Switch OffSpecial AT Command Set for Java Applications Mode Indication after MIDlet StartupRestrictions Flash File System Configuration of Serial InterfaceJava Commands MemoryFrequencyB 1 / frequencyA PerformanceJava Duration of each loop = 600 sPin I/O Data Rates on RS-232 APIPlain Serial Interface Voice Call in Parallel75% 63% 55% 33% Scenarios with Gprs ConnectionUpload 65% 55% 33% 16%Download 91% 87% 81% 73%85% 78% 58% 48% MIDlets MIDlet Documentation MIDlet Life CycleMIDlet.destroyApp method Hello World MIDlet Here is a sample HelloWorld programModule Exchange Suite Command Line BasedFile Transfer to Module Windows BasedSecurity Issues Over the Air ProvisioningOtap Over The Air Provisioning Otap Introduction to OtapOtap Overview Parameters Max. Length AT Keyword SM Install/update Delete Otap ParametersInstall operation Short Message FormatDelete operation Java File Format Procedures Install/Update Delete Time Out Values and Result Codes Tips and Tricks for OtapOtap Tracer SecurityHow To Compile and Run a Program without a Java IDE Build ResultsCompile Run on the Module with Manual StartRun on the Module with Autostart Switch on Autostart Switch off AutostartDebug Environment Data Flow of a Java Application in the Debug EnvironmentEmulator Java IDE Sun Java Studio Mobility 6 2004Q3 Switching emulators Projects Templates ExamplesCompile and run JBuilderX JDK settings Borland JBuilderExamples TC65 Java Users Guide JBuilder2005 JDK settings Eclipse IntegrationEclipse Plug-in installation Eclipse J2ME platform TC65 Java Users GuideV05 26.09.2005 Example Eclipse Project importEclipse Example Compile and debug Eclipse Create packageEclipse Configuration BreakpointsJava Security Secure Data Transfer ModeAsja Vasecuritycertificate J a va C u r i t y c e r t i f i c a t eCreate a Secure Data Transfer Environment Step by Step Create CA and generate CA Root CertificateUnsecured mode Secured modeExecution Control Generate key pair Change to Secured Mode ConceptBuild binary data for AT command Atsjsec Generate customer root CertificateConcept for the Signing the Java MIDlet Encoded JAR-File HashStructure and Description of the Java Security Commands Application and Data ProtectionStructure of the Java Security Commands General structureBuild Java Security Command Hash SHA1Send Java Security Command to the Module ATSJSEC?Create Java Security Commands Export X.509 Root CertificateCommand switch off module exchange functionality Sign a MIDletJava Tutorial Using the AT Command APIClass ATCommand Instantiation with or without CSD SupportSending an AT Command to the Device, the send Method Data ConnectionsTC65 Java Users Guide ATCommandResponseListener Interface Non-blocking ATCommand.send MethodSynchronization ATCommandListener Interface ATEventsImplementation Registering a Listener with an ATCommand Instance Programming the MIDlet ThreadsExample TC65 Java Users Guide Differences from the TC45
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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.
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