ProgrammingEnvironment - OpenRoads Wiki - OpenRoads

Programming Environment

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Outline

1. building cross compile environment for SPC-101 series programs
2. sound data format

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building cross compile environment for SPC-101 series programs

see http://www.netbsd.org/docs/guide/en/chap-build.html#chap-boot-cross-compiling-kernel for datails

The concrete example that you should do

1. install NetBSD 4-stable or older to your PC for develop.
   gcc version will be gcc4 in NetBSD 5.0, it can't build cross complier of gcc3.
2. you must check that no error occurred in every command
3. get NetBSD-2 source

   env CVS_RSH=ssh cvs -d:ext:[e-mail]:/cvsroot co -r netbsd-2-0 src
   

   It is more better that you use cvs mirror. see http://www.netbsd.org/mirrors/#anoncvs.
4. 'cd' to directory of source

   cd src
   

5. build.sh

   ./build.sh -m evbsh3-eb tools
   ./build.sh -u -U -m evbsh3-eb build
   

6. set environmental variable

   setenv TOOLDIR /where/you/build
   setenv DESTDIR /where/you/build
   

   "/where/you/build" is maybe printed out at end of "./build.sh"
7. add to command search path

   set path=(${TOOLDIR}/bin ${path})
   

8. write code

   #include <stdio.h>
   #include <stdlib.h>
   
   int main(int argc, char **argv){
       printf("Hello, RPU-50 cross develop world!!\n");
       return EXIT_SUCCESS;
   }
   

9. write Makefile

   MAKEOBJDIR=.
   PROG=hello
   MAN=
   SRCS=   hello.c
   
   .include <bsd.prog.mk>
   

10. use nbmake-evbsh3 to compile your code

    % nbmake-evbsh3
    

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sound data format

• raw data only :
  
  • 16bit
  • stereo
  • 22050Hz sampling

You can convert data by using sox.

sox coco_15.wav -x -r 22050 -s -w -c2 coco_15.raw

• Supported Windows wave-format at "nerve R1.0" :
  
  • PCM/ADPCM
  • mono/stereo
  • 22050Hz sampling

If you don't choose 22050Hz as sampling rate, its convert processing time become very long.
Maybe will be supported ADPCM and some formats, but it is need to convert data format. I don't know that how much time need processing, now. Conversion time of ADPCM is not so long. It become the practical use enough fast in conversion time.