please dont rip this site

Mouse IO

3122/3719

Communications Protocols

from J.E. Davis posted by Peter Tiang

  1. PC Mouse Systems 
    Serial UART: 1200 baud, data=8,start=1,parity=none
Mouse Protocol of Transmission
        bit:    7  6  5  4  3  2  1  0
byte 1  (sync)  1  0  0  0  0  L  M  R      (0=depressed button)
byte 2  (dX)    x7 x6 x5 x4 x3 x2 x1 x0     (bit 7 -> 0=pos,1=neg)
byte 3  (dY)    y7 y6 y5 y4 y3 y2 y1 y0
byte 4  (dX')   x7 x6 x5 x4 x3 x2 x1 x0
byte 5  (dY')   y7 y6 y5 y4 y3 y2 y1 y0
Notes:  - all bytes are two's complement binary
        - dX, dY  = relative moves after last transmission
        - dX',dY' = relative moves since dX, dY were transmitted
  2. Microsoft Mouse 
    Serial UART: 1200 baud, data=7,stop=1,parity=none
Mouse Protocol of Transmission (normal mode)
        bit:    7  6  5  4  3  2  1  0
byte 1  (sync)  0  1  L  R  y7 y6 x7 x6    (1=depressed button)
byte 2  (dX)    0  0 x5 x4 x3 x2 x1 x0     (MSB-> 0=pos,1=neg)
byte 3  (dY)    0  0 y5 y4 y3 y2 y1 y0
Notes:  - all moves bytes are two's complement binary
          (you must collect all bits together)

Wheel Motion Sensors

Mechanical mice use a Quadrature Encoder position sensor attached to a shaft that rubs against the ball.

Jinxs' 16F84 4 button directional controller pluges in place of an MS Mouse

See also:

file: /techref/io/mouses.htm, 2KB, , updated: 2001/3/7 12:29, local time: 2008/7/5 08:59,
TOP NEW HELP FIND: 
38.103.63.16:LOG IN
©2008 PLEASE DON'T RIP! DO: LINK / DIGG! / MAKE!
 ©2008 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it!
<A HREF="http://www.piclist.com/techref/io/mouses.htm"> Mouses</A>
After you find an appropriate page, you are invited to your to this massmind site! (posts will be reviewed) Just type in the box and press the Post button. (HTML welcomed!): A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Did you find what you needed?
  PICList 2008 contributors:
o List host: MIT, Site host massmind.org, Top posters @20080705 Apptech, Jinx, Xiaofan Chen, Alan B. Pearce, David VanHorn, Bob Axtell, William \Chops\ Westfield, Cedric Chang, olin piclist, Gerhard Fiedler,
* Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Shultz Electronics, Larry Williams, David VanHorn, Bryan Whitehouse, Timothy Weber, David Challis. Peter Todd. on-going support is MOST appreciated!
* Contributors: Neil Narwani, David Cary, Elemer AM Nyiry, Philip J Taylor, Gus Calabrese of Omegadogs.com, Gautama Venegas, Patrick B. Murphy, William Chops Westfield, Peter Todd, Leslie Ellis
  'What can I do?' - SiCKO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .