Serial Comm
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Posts: 46,084
I want to communicate with my serial port on com5. I was thinking
about using the bios.h file in C++ to do this. But ive heard that
this has problems with the windows enviroment. This has lead me to
believe that i should do it visual basic. If any has any suggestions
on how to send characters through my serial cable or if you have and
examples of code i can use written in C++ or visual basic that would
ideal.
Thank you
about using the bios.h file in C++ to do this. But ive heard that
this has problems with the windows enviroment. This has lead me to
believe that i should do it visual basic. If any has any suggestions
on how to send characters through my serial cable or if you have and
examples of code i can use written in C++ or visual basic that would
ideal.
Thank you
Comments
> about using the bios.h file in C++ to do this. But ive heard that
> this has problems with the windows enviroment. This has lead me to
> believe that i should do it visual basic. If any has any suggestions
> on how to send characters through my serial cable or if you have and
> examples of code i can use written in C++ or visual basic that would
> ideal.
We have a series of VB tutorials by Jared Hoylman on using the serial port
with the Stamp here: http://www.rentron.com/VisualBasic.htm
With several more in our BASIC Stamp projects section below.
http://www.rentron.com/BasicStamp.htm
Regards,
-Bruce
webmaster@r...
http://www.rentron.com
example there.
Al Williams
AWC
* Floating point math for the Stamp, PIC, SX, or any microcontroller
http://www.al-williams.com/awce/pak1.htm
>
Original Message
> From: compsci2522003 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=N_GbBWEYt1VPq12rHCvE4OycNrSf6T9aJPtiuQ-rNbbTUB4ZWNwu-flEZQ0CGmvtbkyYf8Rx5ZSpSwBYfxDx-AH8eyTQ]waseemthedream@h...[/url
> Sent: Tuesday, March 26, 2002 12:21 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Serial Comm
>
>
> I want to communicate with my serial port on com5. I was thinking
> about using the bios.h file in C++ to do this. But ive heard that
> this has problems with the windows enviroment. This has lead me to
> believe that i should do it visual basic. If any has any suggestions
> on how to send characters through my serial cable or if you have and
> examples of code i can use written in C++ or visual basic that would
> ideal.
>
> Thank you
>
>
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to add anything feel free.
Waseem
Craig Peacock has a great deal of info on any port as
well as RS232 C examples, both polled and using
intrerrupts
radu
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some questions.
I started with one mscomm control and an api call for timer with a 1
ms resolution. I set dtr and the comm break for the right number of
ms as per the parallax serial protocol document. The on comm event
was used to trap responses and a case statement made the choice of
what to send next. Each time i received the right return from the
stamp except when the firmware version was checked. When I sent
a "0" in the identify sequence, I get back a "0" but no
firmware version or anything. Thats as for as i got.
I tried everything. Iam using VB 5.0. The reset
works i am pretty sure because the simple program in
the bsII which i have an led blinking ten times
resets. I also wrote the same program on a win ce
pocket pc using nsbasic ce and i have the same
problem. My goal is to load an object(hex) file
generated by the BSII ide and load to the stamp using
my pocket pc. I don't think the present tokenizer dll
will work on ce. Parallax states they will come out
with a ce dll in the future. I have developed a number
of experiment for the BSII including a paper
chromatography reader using the toas sensor. I would
like to create a module based educational tool using
the BSII oem and different modules to teach science
with. I will be glad to publish all my projects when
complete for everyone to use free. Thanks for your
help.
Curtis Desselles
You will recevie the firmware version of your stamp only after
sending the right sequence of characters. The sequence is
specific to the type of stamp. See the code extract (from my
stampbc basic compiler for linux) below:
{"BS2", "", STAMPID_BS2, 0},
{"e", "e", STAMPID_BS2E, 8},
{"X", "XYZ", STAMPID_BS2SX, 8},
{"P", "pqrsPQRS", STAMPID_BS2P , 8},
{"I", "ijkIJK", STAMPID_BS2PE, 8},
{0, 0, 0, 0}
// | | | |
// | | | how many memory slots the stamp
has
// | | type string returned by sType
// | valid response chars from stamp
// request ID-char to be sent to the stamp
The BS2 differs somewhat as it needs several characters to be sent
before it replies with a firmware version string.
The higher BS2xx only need a single ID character and reply with
a single character which has to be reinterpreted as a version number
(see next code extract below):
const char* SBLoader::m_versionID[noparse]/noparse[noparse][[/noparse]2] = {
{"e", "v1.0"},
{"X", "v1.0"},
{"Y", "v1.1"},
{"Z", "v1.2"},
{"p", "24 v1.0"},
{"q", "24 v1.1"},
{"r", "24 v1.2"},
{"s", "24 v1.3"},
{"P", "40 v1.0"},
{"Q", "40 v1.1"},
{"R", "40 v1.2"},
{"S", "40 v1.3"},
{"i", "24 v1.0"},
{"j", "24 v1.1"},
{"k", "24 v1.2"},
{"I", "40 v1.0"},
{"J", "40 v1.1"},
{"K", "40 v1.2"},
{0, 0}
// | |
// | decoded version infromation
// coded version returned by the stamp
};
Also note that the stamp (via Rx/Tx) echoes every character
you send to it. So if you have a BS2e, you would send a 'e'
to get the firmware version. The stamp would return that 'e'
and then reply with a second one which means firmware V1.0.
Hope this helps.
You said you want to develop a module based educational tool.
May be that is quite close to what I developed/am developing -
see my breif artice "MACS_article.txt" in the files section.
I am using a TCS230 color sensor controlled by '595 serial
to parallel converter module to do colorimetric analysis.
If you are interested in some details regarding hard or software,
please don't hesitate to contact me.
Regards
Adrian
I am using Nsbasic for ce. I have created a hyperterminal if any
wants it for win ce (ppc) It works great. My Goal is to program the
BSII with a Pocket Pc. I have done it in VB ,I mean loading a hex
file to the BSII. The only stumbling block is not being able to set
a comm break for the pocket pc.
I have been trying for weeks to set a comm break with no luck. I
have a viewsonic ppc. I called viewsonic and they faxed me the pin
configuration for my ppc. The 9 pin serial cable for the ppc has the
standard configuration. I used my multimeter and found the following:
I ran a ground wire from pin 5 to neg of the multimeter and the pos
of the multimeter to pin 4(dtr). when dtr was on, I got a -11.39 v.
and when off, a 00.0 v.
I tried all pins in the same way with a common ground and found that
when dtr on is on pins 2(rx) and 3(tx) go to - 5.0 v when dtr is on
to -5.0 v when dtr is off.
Setting a break makes no difference.
Does anyone have any suggestions?
Thanks,
Curtis