On 01/-10/-28163 02:59 PM, nephish wrote:
Hey all,
I have been trying to get my head around how to do something, but i am
missing how to pull it off.
I am reading a packet from a radio over a serial port.
i have " two bytes containing the value i need. The first byte is the
LSB, second is MSB. Both bytes are BCD-encoded, with the LSB
containing digits zX and MSB containing digits xy. The system speed
is then xyz%, where 100% means maximum speed and would be given by
bytes 00(LSB) 10(MSB)."
that is a quote from the documentation.
Anyway, i am able to parse out the two bytes i need, but don't know
where to go from there.
thanks for any tips on this.
Your problem is simply to extract the two nibbles from a byte. Then you
can use trivial arithmetic to combine the nibbles. Error checking is
another matter.
First you need to specify whether this is Python 2.x or Python 3.x. In
this message I'll assume 2.7
>>> val = "\x47"
>>> print val
G
>>> print ord(val)
71
>>> print ord(val)/16
4
>>> print ord(val)%16
7
>>>
DaveA
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