Tc65 updating tc65 firmware

.............................................................................................................389.3.4EGS5...............................................................................................................................389.4Signed / unsigned..................................................................................................................399.5Obfuscating...........................................................................................................................399.5.1Why...............................................................................................................................399.5.2Without obfuscation.....................................................................................................409.5.3Make your own kind of obfuscation..............................................................................429.6Improving performances.......................................................................................................429.6.1Introduction...................................................................................................................429.6.2Reducing allocations......................................................................................................429.6.3Limiting AT calls.............................................................................................................429.6.4Multithreading...............................................................................................................429.6.5Network stack................................................................................................................439.6.6I/O Blocking or not?

.......................................................................................................439.7The NVRAM deadly mistake..................................................................................................4310Some personal advices..............................................................................................................4310.1Project management: Start simple........................................................................................4310.2Product: Limit human actions...............................................................................................4410.3Product: Find errors on the field...........................................................................................4410.4Software is important............................................................................................................4410.5Real time is very fine.............................................................................................................4411BONUS.......................................................................................................................................4411.1Sample code..........................................................................................................................4411.1.1Logging class..................................................................................................................44TC65Dev–Florent Clairambault–Webingenia–v218–26 April 2012-4-11.1.2Asynchronous HTTP requests........................................................................................4511.1.3String splitting................................................................................................................4711.1.4Buffered Reader.............................................................................................................4811.1.5Launching an update from your program.....................................................................4911.1.6Watchdog on a TC65 v2.................................................................................................49TC65Dev–Florent Clairambault–Webingenia–v218–26 April 2012-5-1Introduction1.1Aboutthis document The purpose of this document is to help new orlong-time TC65/TC65idevelopers tobuild programsforthe TC65/TC65i chip but also leaders of M2M projectsto understand how this chip could helpthem build better, faster and safer M2M projects.

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You canbuild your TC65program really quickly (a week to a month) andstart selling your products without spending monthsto test the product.

And you canstilladdthe features the users wantafter your product has beenreleased.2.4Nobody’s perfect2.4.1JVMBecause this chip uses a JVM it cannot be considered as a real-time performance system.

Whether you havedone some J2MEor J2SEbeforedoesn’t really matter.

Some wear leveling mechanisms are applied but we don’t know the quality of them. I havenever seen any project overloador corrupts its memory but still,this is something you shouldkeep in mind.

2.1Java Java allows you to make fast and reliable programs.

The Garbage Collector manages the memory of your programs.

WEBINGENIATC65Development Building programsforthe TC65/TC65i Florent Clairambault26 April 2012Developmentconcepts and hints around the Cinterion TC65/TC65i.

TC65Dev–Florent Clairambault–Webingenia–v218–26 April 2012-1-Table of Contents1Introduction.....................................................................................................................................51.1About this document...............................................................................................................51.2Waiting for your comments....................................................................................................51.3Who am I.................................................................................................................................52Why is this chip great......................................................................................................................52.1Java..........................................................................................................................................52.2OTAP........................................................................................................................................52.3The big picture.........................................................................................................................62.4Nobody’s perfect.....................................................................................................................62.4.1JVM..................................................................................................................................62.4.2Storage............................................................................................................................62.4.3Issues...............................................................................................................................63TC65 development pre-requisites...................................................................................................63.1Hardware.................................................................................................................................63.2Java..........................................................................................................................................73.3Installing the IDE......................................................................................................................73.3.1Which version?

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