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Topics - pixelfantastic

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Technical support / need to calculate CRC - CCITT
« on: May 16, 2011, 11:25:53 AM »
hi,

i need to calculate a CCITT type crc checksum
...does anyone here know if its possible in Tbasic please?

(The C code is attached in case there are any maths geniuses here)
Thank you
Barrie



2
Technical support / INT32 to signed integer when byte order is reversed
« on: May 16, 2011, 11:18:41 AM »
Hi guys,
can anyone please help?

I have a 4 bytes INT32 coming in via rs232, and the byte order is lowbyte first
 (LSB -- low, high, low,high -- MSB)

how can i  convert this to signed integer ?
result should be from -2147483648  to +2147483647

Thanks for your assistance
Barrie

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