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Serial Interface

ArchiverArchiver Posts: 46,084
edited 2003-07-22 17:25 in General Discussion
Hello all,
After asking some questions few days ago about serial connection I have
already over come most of my problems with Max232 chip. The only occurred
problem is that when I receive massages with the BS2 like that:

SERIN Rpin, BMode,40000,NoConnection,[noparse][[/noparse]STR SerString\7]

when baud rate is set to 84 I get the characters that I expect not exactly
in the write position, Example:
The massage coming in is "CONNECT"
I Get in memory the next thing -> |D|A|C|O|N|N|E|C|T|
The letters D and A in the place of SerString(0) and SerString(1) where not
expected at all. It seems they always there when I am using serin.
I tried to change the rate to lower baud (2400) but the problem still
exists. Another occurred thing is when I print this string to debug window:
DEBUG STR SerString,CR
I get only the right characters from the third place in the array and on
like you would expect.

Is anyone bumped into this problem ? Am I doing something wrong ?
My Home Telephone Number is: +972-3-6021184
My Fax Number is: +972-9-9587360
My Home Telephone Number is: +972-56-546756
Azriel Roy

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2003-07-22 16:54
    Quite possibly the two characters you're receiving first are carriage
    returns and line feeds...

    Check the value f the two characters, if they are ASCII 10 or 13 decimal (I
    think, could be $10 and $13), then this is the case.

    Steve
    Original Message
    From: "Roy Azriel" <royaz@z...>
    To: <basicstamps@yahoogroups.com>
    Sent: Tuesday, July 22, 2003 2:30 PM
    Subject: [noparse][[/noparse]basicstamps] Serial Interface


    > Hello all,
    > After asking some questions few days ago about serial connection I have
    > already over come most of my problems with Max232 chip. The only occurred
    > problem is that when I receive massages with the BS2 like that:
    >
    > SERIN Rpin, BMode,40000,NoConnection,[noparse][[/noparse]STR SerString\7]
    >
    > when baud rate is set to 84 I get the characters that I expect not exactly
    > in the write position, Example:
    > The massage coming in is "CONNECT"
    > I Get in memory the next thing -> |D|A|C|O|N|N|E|C|T|
    > The letters D and A in the place of SerString(0) and SerString(1) where
    not
    > expected at all. It seems they always there when I am using serin.
    > I tried to change the rate to lower baud (2400) but the problem still
    > exists. Another occurred thing is when I print this string to debug
    window:
    > DEBUG STR SerString,CR
    > I get only the right characters from the third place in the array and on
    > like you would expect.
    >
    > Is anyone bumped into this problem ? Am I doing something wrong ?
    >
    >
    > My Home Telephone Number is: +972-3-6021184
    > My Fax Number is: +972-9-9587360
    > My Home Telephone Number is: +972-56-546756
    > Azriel Roy
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-07-22 17:25
    That's bloody brilliant.
    You should know if you send ctrl-A (CHR(10))
    and ctrl-D (CHR(13)) to the DEBUG window,
    you'll get a line-feed for one, and a 'start of
    line' for the other.

    I assume the app that is putting out the
    'CONNECT' string is:
    printf ('\nCONNECT');
    On a PC, the '\n' will give you the
    Ctrl-A + Ctrl-D combination.

    If you really want to know what's in a
    string, do:
    for i = 1 to 9
    DEBUG DEC SerString(I)
    NEXT



    --- In basicstamps@yahoogroups.com, "Steve Ziuchkovski"
    <zman97211@y...> wrote:
    > Quite possibly the two characters you're receiving first are
    carriage
    > returns and line feeds...
    >
    > Check the value f the two characters, if they are ASCII 10 or 13
    decimal (I
    > think, could be $10 and $13), then this is the case.
    >
    > Steve
    >
    >
    Original Message
    > From: "Roy Azriel" <royaz@z...>
    > To: <basicstamps@yahoogroups.com>
    > Sent: Tuesday, July 22, 2003 2:30 PM
    > Subject: [noparse][[/noparse]basicstamps] Serial Interface
    >
    >
    > > Hello all,
    > > After asking some questions few days ago about serial connection
    I have
    > > already over come most of my problems with Max232 chip. The only
    occurred
    > > problem is that when I receive massages with the BS2 like that:
    > >
    > > SERIN Rpin, BMode,40000,NoConnection,[noparse][[/noparse]STR SerString\7]
    > >
    > > when baud rate is set to 84 I get the characters that I expect
    not exactly
    > > in the write position, Example:
    > > The massage coming in is "CONNECT"
    > > I Get in memory the next thing -> |D|A|C|O|N|N|E|C|T|
    > > The letters D and A in the place of SerString(0) and SerString(1)
    where
    > not
    > > expected at all. It seems they always there when I am using serin.
    > > I tried to change the rate to lower baud (2400) but the problem
    still
    > > exists. Another occurred thing is when I print this string to
    debug
    > window:
    > > DEBUG STR SerString,CR
    > > I get only the right characters from the third place in the array
    and on
    > > like you would expect.
    > >
    > > Is anyone bumped into this problem ? Am I doing something wrong ?
    > >
    > >
    > > My Home Telephone Number is: +972-3-6021184
    > > My Fax Number is: +972-9-9587360
    > > My Home Telephone Number is: +972-56-546756
    > > Azriel Roy
    > >
    > >
    > >
    > > To UNSUBSCRIBE, just send mail to:
    > > basicstamps-unsubscribe@yahoogroups.com
    > > from the same email address that you subscribed. Text in the
    Subject and
    > Body of the message will be ignored.
    > >
    > >
    > > Your use of Yahoo! Groups is subject to
    http://docs.yahoo.com/info/terms/
    > >
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