Ross Ridge wrote:
>Unfortunately from your other posts you do seem to be working on
>a single byte a time, so my technique probably won't be efficient.
Its a bit more - the hardware allows for 64 lines in and 64 lines out.
>You probably want just want to be using constants and bit masking.
>S
Ross Ridge wrote:
>I don't think you can do anything faster with standard modules, although
>it might not be efficient if you're only working with a single byte.
Hendrik van Rooyen <[EMAIL PROTECTED]> wrote:
>Thanks I was not aware of binascii module this looks powerful.
Not really. It's just u
Lie wrote:
>> This of course means that there has to be another
>> thread active to actually do the i/o on a periodic basis,
>> gathering the outputs and writing them out, and reading
>> the inputs and scattering them to the various named input
>> bits
>
>Not necessarily. You've mentioned two way
Ross Ridge wrote:
>This is the code I use to convert large bit arrays to byte strings and
>back:
>
>import string
>import binascii
>import array
8<--- examples --
>I don't think you can do anything faster with standard modules, although
>it might not be efficient
"Aaron \"Castironpi\" Brady" wrote:
>This is tolerable. Â If you've got a better 'clear' operation than
>'xor', you're welcome to it.
*grin* xor is a toggle bit fuction, and I did not like the recursive
call in your code. so here is a module bsed on your BitSet:
(I hope my tabs survive the journe
On Oct 10, 10:37 pm, "Aaron \"Castironpi\" Brady"
<[EMAIL PROTECTED]> wrote:
> On Oct 9, 5:30 pm, "Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote:
>
>
>
> > Is there a canonical way to address the bits in a structure
> > like an array or string or struct?
>
> > Or alternatively, is there a good way
On Oct 9, 5:30 pm, "Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote:
> Is there a canonical way to address the bits in a structure
> like an array or string or struct?
>
> Or alternatively, is there a good way to combine eight
> ints that represent bits into one of the bytes in some
> array or string
On Oct 11, 5:27 am, "Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote:
> This of course means that there has to be another
> thread active to actually do the i/o on a periodic basis,
> gathering the outputs and writing them out, and reading
> the inputs and scattering them to the various named input
>
On Oct 11, 5:27 am, "Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote:
> This of course means that there has to be another
> thread active to actually do the i/o on a periodic basis,
> gathering the outputs and writing them out, and reading
> the inputs and scattering them to the various named input
>
"Tino Wildenhain" wrote:
> Hendrik van Rooyen wrote:
> > "Tino Wildenhain" wrote:
8<
> > Sure, one could for instance make a list of eight-entry lists:
> >
> > io = [[b0,b1,b2,b3,b4,b5,b6,b7],]
>
> what should that represent? Which byte order
> do you have in
Mensanator wrote:
>I use the gmpy module for all my bit related work and
>have been very satisfied with the results.
8<--- gmpy function list ---
Thanks. All of this looks good. Will check out
gmpy too.
- Hendrik
--
http://mail.python.org/mailman/listinfo/python-
George Sakkis wrote:
>I don't know of a canonical way (bit hacking is not really common in
>Python) but pehaps BitPacket [1] comes close to what you're after.
>
>George
>
>[1] http://hacks-galore.org/aleix/BitPacket/
Thanks for the link - I will check it out
- Hendrik
--
http://mail.python.org/
Lie Ryan wrote:
>You'll find that in most cases, using integer or Boolean is enough. There
>are some edge cases, which requires bit addressing for speed or memory
>optimizations, in python, the usual response to that kind of optimization
>requirement is to move that part of the code to C.
>
>If,
Hendrik van Rooyen <[EMAIL PROTECTED]> wrote:
>Is there a canonical way to address the bits in a structure
>like an array or string or struct?
>
>Or alternatively, is there a good way to combine eight
>ints that represent bits into one of the bytes in some
>array or string or whatever?
This is the
Hendrik van Rooyen wrote:
"Tino Wildenhain" wrote:
byte1 byte2? this does not look very practical
to me. In the simplest form of storing
your values in a text string, you could just
use ord() to get the byte value and
operate on it with 1<<0 1<<1 1<<3 and so on.
If you want, put a module in
"Tino Wildenhain" wrote:
>
> byte1 byte2? this does not look very practical
> to me. In the simplest form of storing
> your values in a text string, you could just
> use ord() to get the byte value and
> operate on it with 1<<0 1<<1 1<<3 and so on.
>
> If you want, put a module in which defin
On Oct 9, 5:30 pm, "Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote:
> Is there a canonical way to address the bits in a structure
> like an array or string or struct?
>
> Or alternatively, is there a good way to combine eight
> ints that represent bits into one of the bytes in some
> array or string
On Oct 9, 6:30 pm, "Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote:
> Is there a canonical way to address the bits in a structure
> like an array or string or struct?
I don't know of a canonical way (bit hacking is not really common in
Python) but pehaps BitPacket [1] comes close to what you're af
On Fri, 10 Oct 2008 00:30:18 +0200, Hendrik van Rooyen wrote:
> Is there a canonical way to address the bits in a structure like an
> array or string or struct?
>
> Or alternatively, is there a good way to combine eight ints that
> represent bits into one of the bytes in some array or string or
>
Hi,
Hendrik van Rooyen wrote:
Is there a canonical way to address the bits in a structure
like an array or string or struct?
Or alternatively, is there a good way to combine eight
ints that represent bits into one of the bytes in some
array or string or whatever?
It seems to me that there is a
Is there a canonical way to address the bits in a structure
like an array or string or struct?
Or alternatively, is there a good way to combine eight
ints that represent bits into one of the bytes in some
array or string or whatever?
It seems to me that there is a dilemma here :
if you can writ
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