Ese 2008 RTSC Draft1

Real-Time Software Components A Scalable Component Model for Embedded C Development Dave Russo, Texas Instruments Eclipse DSDP/RTSC Project Lead © 2008 by Texas Instruments; made available under the EPL v1.0 | Feb 12, 2008

In 25 Words Or Less .... RTSC provides a C-based software component model for developing, delivering, and deploying re-usable real-time software targeted for diverse embedded platforms without compromising system performance !  QUALITY

RTSC Components ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Rich Client Platform Embedded Platform A target-code Key Characteristics Benefits Application Application C target-code (C) RTSC Component C target-code (C) meta-code (JavaScript) B target-code (C) RTSC Component B target-code (C) meta-code (JavaScript) A target-code RTSC Component A target-code (C) meta-code (JavaScript)

Component-Based Systems Essential Characteristics Basic Requirements R S R S ′ INTERCHANGEABILITY R T C S REUSABILTY UNIFORM PACKAGING  CONFIGURABLE ASSEMBLY FORMAL SPECIFICATIONS

Programming-In-The-Large 1000s 100s 10s ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],standard C functions & structs MODULE INTERFACE standard C functions & structs MODULE INTERFACE PACKAGE standard C functions & structs concrete & closed abstract & open

RTSC Specification MODULE SPECIFICATION INTERFACE SPECIFICATION MODULE IMPLEMENTATION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],.c .xdc .xdc RTSC .h RTSC .h generated headers #include #include // implement specified fxns // natural map to ANSI C // call existing C or ASM fxns // access specified configs // formalize best practices // fun-to-write, easy-to-read package a_std; interface IA { enum E {E1, E2}; int fxn1(char *b); } package my_pkg; module ModA inherits a_std.IA { config int max; Bool fxn2(E e); }

RTSC Packaging PACKAGE SPECIFICATION ,[object Object],[object Object],[object Object],[object Object],PACKAGE MANIFESTATION requires your_pkg [1,3]; package my_pkg [2,4,5] { interface IA,ICodec, … ; module ModA , … ; } .xdc PACKAGE DEPLOYMENT my_pkg/ your_pkg/ a_std/ c:/work; h:/share; … package-repository path source files generated files my_pkg/ special files

RTSC Assembly Application Configuration RTSC enables rapid tuned (re)assembly of binary components Task = xdc.useModule('ti.bios.Task'); MP4 = xdc.useModule('ti.omapsw.mpeg4.ENC'); G723 = xdc.useModule('3p.codecs.g723.ENC'); MP4.profile = "base"; : ,[object Object],[object Object],[object Object],[object Object],[object Object],HWA B HWA B HWA B MEG4 Package ti.omap.mpeg4 platform independent timer C timer B HWA 1 timer C timer B DMA 1 app config script platform: 'ti.platforms.omap3430' target: 'ti.targets.C64' platform binding HWA B HWA B HWA B MEG4 Package ti.omap.mpeg4 platform independent timer C timer B HWA 1 timer C timer B DMA 1 G726 Package 3p.codecs.g726 platform independent G723 Package 3p.codecs.g723 platform independent DSP/BIOS Package ti.bios platform independent DMA 3 DMA 2 DMA 1 timer 3 timer 2 timer 1 timer 3 timer 2 timer 1 platform: 'ti.platforms.evm6446' target: 'ti.targets.C64' timer C timer B HWA 1 Platform Package ti.platforms.omap3430 C64 rev 2 HWA 1 timer 1 Targets Package ti.targets C64 C28 C55 … Platform Package ti.platforms.evm6446 C64 rev 3 HWA 2 timer 2 DSP/BIOS Package ti.bios platform independent DMA 3 DMA 2 DMA 1 timer 3 timer 2 timer 1 MEG4 Package ti.omap.mpeg4 platform independent timer C timer B HWA 1 timer C timer B DMA 1 G726 Package ti.codecs.g726 platform independent G723 Package ti.codecs.g723 platform independent Assembly Process app.cfg app.c appcfg.o app.o compile compile app.exe link appcfg.xdl appcfg.c config

Extended Object Lifecycle // include modules Mp3 = xdc.useModule ( "your_pkg.Mp3" ); // create static instances Program.global.dec = Mp3.create({x:10, y:20}); #include <your_pkg/Mp3.h> #include <xdc/cfg/global.h> main() { for (;;) { Mp3_decode(dec, …); … } } ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A single RTSC module supports both static and runtime use ,[object Object],[object Object],[object Object],RTSC . c . cfg #include <your_pkg/Mp3.h> Mp3_Handle dec; main() { /* initialize system */ Mp3_Params params; Mp3_Params_init(&params); params.x = 10; params.y = 20; dec = Mp3_create(&params); if (dec == NULL) { … } /* start real-time processing */ for (;;) { Mp3_decode(dec, …); … } } RTSC #include <your_pkg/Mp3.h> Mp3_Handle dec; main( int argc, char *argv[]) { /* initialize system */ Mp3_Params params; Mp3_Params_init(&params); params.x = atoi(argv[1]); dec = Mp3_create(&params); if (dec == NULL) { … } /* start real-time processing */ for (;;) { Mp3_decode(dec, …); … } } #include <your_pkg/Mp3.h> Mp3_Handle dec; main( int argc, char *argv[]) { /* initialize system */ Mp3_Params params; Mp3_Params_init(&params); params.x = atoi(argv[1]); dec = Mp3_create(&params); if (dec == NULL) { … } /* start real-time processing */ for (;;) { Mp3_decode(dec, …); … } }

XDCtools managed content specified content ,[object Object],[object Object],[object Object],[object Object],[object Object],specification language — XDCspec meta-language — XDCscript ANSI C package life-cycle support program life-cycle support program run-time support basic tools & utilities % target software DSP/BIOS 5.x CodecEngine SYS/BIOS 6.x xDAIS 1999 2004 2006 2007 2009 1.x 2.x 3.x XDCtools Accelerate Adoption

Summary ,[object Object],[object Object],[object Object],[object Object],http://www.eclipse.org/dsdp/rtsc ,[object Object],[object Object],[object Object],[object Object]

Ese 2008 RTSC Draft1

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