BCD conversion

[Macgman2000]

Hello All,

I have 3 bytes that represent a value 122880 . The problem is that the 3bytes are backwards in bit order.......

regular binary 122880 = (msb) 00000001 11100000 00000000

My buffer reads 122880 = (lsb) 00000000 00000111 10000000

How do I take the 3bytes that are backwards in bit order and convert it to BCD or to something I can throw up on an LCD.

Best Regards,
Nick

[mister_e]

it's sounds familiar...
http://www.picbasic.co.uk/forum/show...=reverse+order

regular binary 122880 = (msb) 00000001 11100000 00000000

My buffer reads 122880 = (lsb) 00000000 00000111 10000000

How do you get those bytes??? let's say by serial com... why not... it's possible

b0 var byte
b1 var byte
b2 var byte
w1 var byte
w0 var word

hserin [b0,b1,b2]
w1=b2 rev 8
w0.highbyte=b1 rev 8
w0.lowbyte=b0 rev 8
hserout [bin8 w1,bin16 w0]

now i leave you with the pleasure of doing some math and use modifiers like DEC, DIG and all the others.

[Bruce]

Just curious. If you're shifting in data LSB first, and this results in your data
being backwards, what happens if you shift in your data MSB first?

[mister_e]

i had this idea... but since we don't know how and where it come from...

[NavMicroSystems]

Bruce & Steve,

I guess Nick is receiving the bits from an external Master talking:
"Chinese Protocol"

See here for reference

[NavMicroSystems]

Nick,

how are you getting on with the project?