Difference between revisions of "Interfacing with a mouse"
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== Overview == |
== Overview == |
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[[image:LYNX-M9-unit.jpg|thumb| |
[[image:LYNX-M9-unit.jpg|thumb|250px|Ione Lynx-M9 mouse [http://www.geeks.com/largePic_All.asp?InvtId=LYNX-M9&Pic=LYNX-M9-unit.jpg]|right]] |
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The goal of the project is to interface the PIC184520 with a PS/2 mouse - specifically, an ione Lynx-M9 Wheel Optical mouse with a USB to PS/2 adapter. The mouse's XY coordinates will be displayed on an LCD screen and will be updated when the mouse moves. |
The goal of the project is to interface the PIC184520 with a PS/2 mouse - specifically, an ione Lynx-M9 Wheel Optical mouse with a USB to PS/2 adapter. The mouse's XY coordinates will be displayed on an LCD screen and will be updated when the mouse moves. |
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Revision as of 00:17, 12 February 2009
Original Assignment
Interface the PIC with a PS/2 optical mouse and display (x,y) position data on either an LCD screen (see, e.g., C Example: Serial LCD or C Example: Parallel Interfacing with LCDs) or the PC (e.g., in Matlab or hyperterminal).
Overview
The goal of the project is to interface the PIC184520 with a PS/2 mouse - specifically, an ione Lynx-M9 Wheel Optical mouse with a USB to PS/2 adapter. The mouse's XY coordinates will be displayed on an LCD screen and will be updated when the mouse moves.
The PS/2 connector is traditionally used to connect mice and keyboards to computer systems. The connector uses six pins: clock, data, 5V, GND and two that are not connected. The PS/2 connector is fully documented here: PS/2 connector. We used a Parallax PS/2 to Breadboard Adapter to connect the optical mouse to the PIC18. Documentation and ordering information for the adapter can be found here: Breadboard Adapter.
On this page you will find the steps to use a PS/2 mouse's output to meet your needs. The code, circuit diagram, and notes about the interface are included. This is currently a work in progress, but should be a good foundation for those looking to build on it and be able to use a PS/2 mouse in their own projects.
![[1]](http://www.geeks.com/largePic_All.asp?InvtId=LYNX-M9&Pic=LYNX-M9-unit.jpg){kind=link}