IP networking Interfaces User's Guide

TC65 JAVA User's Guide
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TC65 JAVA User's Guide_V05 Page 19 of 90 26.09.2005
4.3 Data Flow of a Java Application Running on the Module
JVM
Flash File
System
File I/O API
IMP-NG
AT Command
API
ASC0
GPIO
DAI
AT Parser
TCP/IP
system.out ASC1
I2C/SPI DAC/ADC
Figure 3: Data flow of a Java application running on the module.
The diagram shows the data flow of a Java application running on the module. The data flow
of a Java application running in the debug environment can be found in Figure 20.
The compiled Java applications are stored as JAR files in the Flash File System of module.
When the application is started, the JVM interprets the JAR file and calls the interfaces to the
module environment.
The module environment consists of the:
• Flash File System: available memory for Java applications
• TCP/IP: module internal TCP/IP stack
• GPIO: general purpose I/O
• DAI: Digital Audio Interface
• ASC0: Asynchronous serial interface 0
• ASC1: Asynchronous serial interface 1
• I2C: I2C bus interface
• SPI: Serial Peripheral Interface
• DAC: digital analog converter
• ADC: analog digital converter
• AT parser: accessible AT parser
The Java environment on the module consists of the:
• JVM: Java Virtual Machine
• AT command API: Java API to AT parser
• File API: Java API to Flash File System
• IMP-NG: Java API to TCP/IP and ASC0