Subject:
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Re: Slower serial connection
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 16 Feb 2000 15:13:47 GMT
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Original-From:
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Kam Leang <KLEANG@ENG.spamlessUTAH.EDU>
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Viewed:
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879 times
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Hi everyone!
The RF tx/rx units shown on the page were from Ming Microsystems. They
were rated for 1200 baud, but I've been able to transmit/receive slower
using the Parallax Inc. RF boards, which were rated for 300 baud. For
slower serial communication, you can set the Baud-rate control register
(BAUD 102B) to an appropriate value based on the info from the 68HC11 pink
book (Part #M68HC11RM/AD, available from Motorola for free). For example:
poke(0x3c, 1); /*Disable pcode character receive mode*/
poke(0x102b,0x33); /*Set serial baud rate to 1200*/
BTW, my homepage address has moved to:
http://www.leang.com/kam
Good luck,
--kam
On Wed, 16 Feb 2000, Jonathan Swaby wrote:
> Try this web page:
> http://www.mech.utah.edu/~kleang/robotics/info/roboinfo.html . It should
> have what you want. I have not tried it myself, but I do have the
> reciever/transmitter pair described on the page.
>
>
> At 09:25 PM 2/16/00 +0800, Adam Oliver wrote:
>
> > > > >
>
> <excerpt><fontfamily><param>Arial</param><smaller>Is it possible to slow
> down the speed of the serial interface on the Handyboard? I have just
> gotten hold of a couple of RF transmit/receive pairs, but they are only
> able to go up to about 1200 baud or so. I don't intend using IC over the
> link, just a simple serial program to send/receive small amounts of data.
>
> </smaller></fontfamily>
>
> <fontfamily><param>Arial</param><smaller>Can this be done, and if so, how
> would I go about it? My assembly coding is less than fantastic, so if
> anyone has any code etc they'd like to share I would not complain :-) If
> not, any tips/suggestions would be greatly appreciated.
>
> </smaller></fontfamily>
>
> <fontfamily><param>Arial</param><smaller>many thanks
>
> Adam Oliver
>
> </smaller></fontfamily>
>
> </excerpt><<<<<<<<
>
>
>
>
> <bold><bigger>Jonathan Swaby
>
> </bigger>Computer Services Specialist IV
>
> Student Affairs
>
> Phone: 404-894-5889
>
> Fax: 404-894-9928
>
> <color><param>0000,0000,8080</param><bigger><bigger>
> Georgia</bigger></bigger></color></bold><bigger><bigger><italic><color><param>8080,8080,0000</param>Institute
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______ ______
---------------------------------------------- |_ _| |_ _|
Kam Leang | |______| |______
University of Utah | |_ _| |_ _|
Department of Mechanical Engineering | | | | | | | |
MEB Room 2202 Salt Lake City, UT 84112 | |_|__|_| | | |
(Tel) 801.581.7105 (Fax) 801.585.9826 \ ___________/ | |
http://www.leang.com/kam | |______| |
----------------------------------------------------- \ ___________/
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Message is in Reply To:
 | | Re: Slower serial connection
|
| Try this web page: (URL) . It should have what you want. I have not tried it myself, but I do have the reciever/transmitter pair described on the page. (...) <excerpt><fontfamily...smaller>Is it possible to slow down the speed of the serial (...) (25 years ago, 16-Feb-00, to lugnet.robotics.handyboard)
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