JAVA in Embedded

Conventional Embedded systems involved only C and assembly languages. Now a days, the requirements for embedded systems widened beyond C and Embedded Database, Java and C++ in embedded systems become hot topics. So, let's update about the latest trends.

About Java in Embedded Systems:
http://www.netrino.com/Embedded-Systems/How-To/Embedded-Java

For more information about Java in Embedded:
http://www.netrino.com/taxonomy_menu/3/11

Read 555 timer first

555 timer is used in many electronics project. So, first read about it and learn how to set the resistors to generate the waveform.

Read this:
http://www.sentex.ca/~mec1995/gadgets/555/555.html

Challenges in porting Android in non-handset applications

http://embedded-computing.com/challenges-porting-android-non-handset-applications

Embedded system Power Consumption

http://www.mentor.com/resources/techpubs/upload/mentorpaper_68962.pdf

RTOS metrics

・Memory footprint → memory usage, RAM & ROM requirements
・Latency
    ・Interrupt latency
    ・Scheduling latency
・Services performance→Minimum time taken by a system call

Embedded Microprocessor Benchmark Consortium (EEMBC)

http://www.mentor.com/resources/techpubs/upload/mentorpaper_69305.pdf

Interesting Story: Android

http://en.wikipedia.org/wiki/Android_(operating_system)

From RTC magazine,

"Certainly, Android is not ideal for all types of device designs. It presents a dazzling array of features and capabilities for mobile/wireless devices and an attractive OS option for other intelligent devices. In particular, Android is a viable alternative for designs that benefit from a graphical user interface, field-upgrade capability, a complement of ready-to-use applications, and both Java-style and native C/C++ runtimes.

It is a less attractive choice for

• Headless devices
• Devices with extremely limited RAM and persistent storage
• Closed-box designs
• Legacy support for RTOS APIs and other specialized interfaces
• Systems with pervasive hard real-time / low-latency response needs
• Designs built on “minority” CPU families or special-purpose silicon"

THE DALVIK VIRTUAL MACHINE ARCHITECTURE

Know about Dalvik garbage collection

http://davidehringer.com/software/android/The_Dalvik_Virtual_Machine.pdf