On Mon, 22 Aug 2005, Grant Edwards wrote:
> On 2005-08-22, Magnus Lycka <[EMAIL PROTECTED]> wrote:
>
>>> Hi, I'm working on a project were a need to be able to upload firmware
>>> to a microcontroller based Ethernet device. But because of the memory
>>> constraints the controller can only handle
yeah, i didn't mean running python on the HC12 but using compiled
python on a ARM7 or simular would be nice. There was a project for
embedded python but it seems to have died. Yeah i've been thinking
about using UDP but then i would have to impliment checksums and having
a reliable way to send and
Grant Edwards <[EMAIL PROTECTED]> wrote:
> You have no control over packet size in TCP if you use the
> normal socket interface. About the only thing you can to is
> put delays between calls to send() in hope that the TCP stack
> will send a packet.
You can set the MTU (maximum transfer unit)
[EMAIL PROTECTED] wrote:
> I'm going to try the timed wait alternative, if i get it the
> application to work properly i'll post the results in this group and
> the code if anyone want's it. It's such a contrast to code a tcp-server
> for the microcontroller (MC9S12NE64) in C and coding in python :
I'm going to try the timed wait alternative, if i get it the
application to work properly i'll post the results in this group and
the code if anyone want's it. It's such a contrast to code a tcp-server
for the microcontroller (MC9S12NE64) in C and coding in python :-) I
really hope embedded python
"Grant Edwards" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
> It's very probable that the TCP stack will combine chunks and
> send out full Ethernet frames (4K bytes).
>
> You're probably going to have to either put a time delay in the
> loop, or wait for each chunk to be acknowle
On 2005-08-22, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> aaah, well i believe that in Windows XPSP2 has disabled raw socket
> support (yes i sadly have to use windows) so that's no option. But I'll
> try to put a time delay and check what happens. Or otherwise perhaps i
> could do a socket.cl
aaah, well i believe that in Windows XPSP2 has disabled raw socket
support (yes i sadly have to use windows) so that's no option. But I'll
try to put a time delay and check what happens. Or otherwise perhaps i
could do a socket.close each time, but that's a terrible waste of
packets.
--
http://ma
On 2005-08-22, Magnus Lycka <[EMAIL PROTECTED]> wrote:
>> Hi, I'm working on a project were a need to be able to upload firmware
>> to a microcontroller based Ethernet device. But because of the memory
>> constraints the controller can only handle packages of 300 bytes each
>> time. So therefore t
On 2005-08-22, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> I'm working on a project were a need to be able to upload firmware
> to a microcontroller based Ethernet device. But because of the memory
> constraints the controller can only handle packages of 300 bytes each
> time. So therefore the
Magnus Lycka wrote:
> header_template = 'Chunk %05i, %03i bytes'
BTW, if the header is binary, you probably want to have a look at
the struct module. http://docs.python.org/lib/module-struct.html
--
http://mail.python.org/mailman/listinfo/python-list
[EMAIL PROTECTED] wrote:
> Hi, I'm working on a project were a need to be able to upload firmware
> to a microcontroller based Ethernet device. But because of the memory
> constraints the controller can only handle packages of 300 bytes each
> time. So therefore the firmware file must be sent in ch
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