On 10/01/2006, at 21:48, Camm29" <[EMAIL PROTECTED]> wrote:
I have some custom made Hardware that i communicate to in Serial.
This Hardware returns the Character ">" when ready and able to Receive
and/or finished replying.
so before any write to file "COM:1" or read from file "COM:1" (I
must have
received the Char ">")
i have tried many combinations in trying to get this to work !!!!!!
somehow if i loop like below i still manage to send before ">" is
received
it would seem which causes errors ???
repeat 100
write -------
wait for ">"
read -------
end
if you must wait for ">" before "any write or ... read" then firstly
your code needs another wait statement. The above code will write
after reading and without waiting for a ready character, which is the
problem you report.
The following will work _provided_ you are happy that you will always
receive the requisite characters )and that the device is ready the
first time) or else it will wait forever.
repeat N
write something
wait for ">"
read something
wait for ">"
end repeat
In the basic form of the loop above you will need an outside "send"
statement to make sure things are still alive and get you out of
problems, which would require a construct along the lines of 'wait
for ">" with messages'
This might be done better with "wait for messages" then test whether
the message was one which allows you to read/write or if you must
exit the loop.
HTH
David
It's a mystery or i lost the plot.
Nothing wrong with comm settings or hardware for sure.
Regards Camm
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