CVS: examples/reed-solomon README.txt,NONE,1.1 README,1.1,NONE
Chris Liechti <[email protected]>
| Newsgroups | gmane.comp.hardware.texas-instruments.msp430.gcc.cvs |
|---|---|
| Message-ID | <[email protected]> |
Update of /cvsroot/mspgcc/examples/reed-solomon
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv1695/examples/reed-solomon
Added Files:
README.txt
Removed Files:
README
Log Message:
- consistently name the files README.txt (with extension for the windows users)
- update some of the readmes contents and add new ones
- use the reStructuredText format for use with docutils rst2html
--- NEW FILE: README.txt ---
reed-solomon
============
Reed-Solomon code (15,10) over GF(16) implementation for msp430 MCU.
I use it for my remote control devices as follows:
I have to transmit 40 bits of info over noisy channel. I break these 40 bits
into 10 units 4 bites each. Then I encode it with encode_rs(data,&data[10]);
and send these 15 units of 4 bits each over channel.
On receiving end I pass these data via eras_dec_rs(data, 0, 0);
If during transmission no more than 2 errors occured, I'll get restored
first 10 units of usefull info. If I got more than 2 errors, eras_dec_rs()
will return -1.
With -O2 option it needs (with test code for coding/encoding) about 2K of
ROM and 24 bytes of RAM.
To compile::
msp430-gcc -O2 nn4.c -DTEST_SOURCE -mmcu=msp430x123 -g
To run under debugger (say with ddd front-end) type::
ddd --debugger msp430-gdb ./a.out
on gdb prompt type::
ta si
lo
then set breakpoint at any place and run.
Have fun.
~d
--- README DELETED ---
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