Rob <[EMAIL PROTECTED]> wrote:
> Craig,
>
> In the embedded firmware, the each box re-transmits after it finishes
> reading the packet. This is a very rudimentary system, and uses no
> flow control. The topology is that each embedded box has a master and
> a slave port. The master is used
Rob wrote:
> try:
> response = p.readline()
> except SerialException:
> print ">Timed out<"
> try:
> port.writelines(msg)
> except OSError:
> print "Serial port failure. Power cycle units"
> port.close()
Leo,
I like your tuple idea. I will implement it. The ack and nak both
have the same format, namely: "Id Ack" or "Id Nak"
rob
On Dec 15, 4:34 pm, "Leo Kislov" <[EMAIL PROTECTED]> wrote:
> Rob wrote:
> > Hi all,
>
> > I am fairly new to python, but not programming and embedded. I am
> > having
Rob wrote:
> Hi all,
>
> I am fairly new to python, but not programming and embedded. I am
> having an issue which I believe is related to the hardware, triggered
> by the software read I am doing in pySerial. I am sending a short
> message to a group of embedded boxes daisy chained via the seri
I have been modifying the code today, tracing through it and trying to
make it more robust and implement data hiding. That way as someone
reads through my main they will see intuitively what I am doing. For
that reason I went back and added a filename parameter to OpenPort.
The reason I am clos
On 2006-12-15, hg <[EMAIL PROTECTED]> wrote:
>> Here is OpenPort
>>
>>
>> OpenPort procedure
>>
>> def OpenPort(name):
>> BRate = 19200
>> Tout =
Craig,
In the embedded firmware, the each box re-transmits after it finishes
reading the packet. This is a very rudimentary system, and uses no
flow control. The topology is that each embedded box has a master and
a slave port. The master is used to receive data from the upstream
box, and send
Rob wrote:
> Here is OpenPort
>
>
> OpenPort procedure
>
> def OpenPort(name):
> BRate = 19200
> Tout = 3
>
> try:
> # Initialize th
Here is OpenPort
OpenPort procedure
def OpenPort(name):
BRate = 19200
Tout = 3
try:
# Initialize the port
p = serial.Serial(n
Rob wrote:
> Hi all,
>
> I am fairly new to python, but not programming and embedded. I am
> having an issue which I believe is related to the hardware, triggered
> by the software read I am doing in pySerial. I am sending a short
> message to a group of embedded boxes daisy chained via the ser
[EMAIL PROTECTED] wrote:
..snip>
> In the second iteration of your loop, you appear to be opening a port
> that is already open:
>
> for i in range(3):
> port = OpenPort()
>
> thus the error message: "the serial port is unavailable".
>
> --Drake Smith
Skip that -- I didn't not
Rob wrote:
> Hi all,
>
> I am fairly new to python, but not programming and embedded. I am
> having an issue which I believe is related to the hardware, triggered
> by the software read I am doing in pySerial. I am sending a short
> message to a group of embedded boxes daisy chained via the seria
Rob <[EMAIL PROTECTED]> wrote:
> I am fairly new to python, but not programming and embedded. I am
> having an issue which I believe is related to the hardware, triggered
> by the software read I am doing in pySerial. I am sending a short
> message to a group of embedded boxes daisy chained v
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