>Assuming I'm going to be generating between two to eight words of twelve
>bits each in a data stream over a remote control UHF link, what sort of
>checksum or CRC is appropriate?

We had a 10 byte packet, and added a 16 bit CRC. It made
for a rock solid system.

Here is a great reference on CRC's:

ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt

If you are going to throw data away when the CRC does not match,
remember that it is important to only throw away one byte, and then
re-apply the CRC criteria. This will guarantee that your algorithm
re-synchronizes without the need for timeouts or any other complex
code.


| Brent A. Crosby
| Crystalfontz America, Incorporated
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