shawn bright wrote:
Hey there all,

I have a gps device that talks to the computer over a serial port.
i am using the pyserial module and getting values in.

Here is my delima,

i am supposed to read a message in that starts with a $ (this is all ascii).
but when i do a ser.read(16) and i try to print it to a screen, it is
all just weird characters.

I did not realize there was a Weird character set. I'd have expected ASCII characters. (chuckle?)

When you say "weird" I guess you mean unexpected. What exactly did you get and what exactly did you expect?

i had it write each byte to a file  like
f = open('test', 'wb')
msg = ser.read(16)
for i in msg:
    f.write(i)
f.close()

then when i open it with python and do
f = open('test', 'rb')
and read it it is the same weird characters.

Well of course. Writing to a file and then reading it should give the same results. Again what did you expect and why does this surprise you?

when i add a line to print the type after reading like this:
for i in msg:
    print str(type(i))

i consistantly get type str
That's good. It tells us that msg is a character string.
so, what am i supposed to be doing to get real values out of this
stream of bytes?

Depends again on what you are expecting. What do you mean by "real"?


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When we take the time to be aware of our feelings and needs we have more satisfying interatctions with others.

Nonviolent Communication provides tools for this awareness.

As a coach and trainer I can assist you in learning this process.

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