The mouse’s XY coordinates will be displayed on an LCD screen and will be updated when the mouse moves. A great way to trouble shoot, debug, and see the final result is to use an LCD screen to display the information that the mouse is sending to the PIC. This data transmission takes place based on the clock signal generated by the external device. The mouse clock signal is essentially a Our code shown further down attempts to display X and Y coordinate motion of an optical mouse by doing the following: Content may change as the project progresses.
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The clock and data lines connect directly to the clock and data lines of the breadboard adapter. Interpret the direction bits explained in the Mouse Interface section Content may change as the project progresses.
Qtronix iOne Lynx M9 3-Button Optical Mouse – Black
Retrieved from ” http: Our code shown further down attempts to display X and Y coordinate motion of an optical mouse by doing the following: Interpret the X and Y motion bytes After a great deal of troubleshooting, we have come to the conclusion that our interrupt service routine algorithm or microcontroller is simply not fast enough to receive and send data in time with clock signal generated by the mouse.
The frames are made up of: Views Page Discussion View source History.
The connector uses six pins: The code, circuit diagram, and notes about the interface are included. Input Data bit into a 33 member array A great way to trouble shoot, debug, and see the final result is to use an LCD screen to display the information that the mouse is sending to the PIC.
These lines are specified as DATA and Clock and allow for host-to-device transmission and device-to-host transmission. Release Clock Default is high on an open collector.
Nlynx Problem Support, Troubleshooting Help & Repair Answers – Fixya
This data transmission takes place based on the clock signal generated by the external device. Basically, the microcontroller needs to be able to have two way communication with the mouse.
Interfacing with a mouse From Mech. When the clock is set low, the host will wait us before reading the data stream. The other two pins are actually used as both inputs and outputs. Personal tools Log in.
Interfacing with a mouse
More information about this operation can be found here: YV and XV are overflow flags for the motion in Y and X directions respectively where 0 means negative motion and 1 means positive motion. Data is sent as bytes with bit frames 11 for device-to-host transmission and 12 for host-to-device. Normally, when a mouse first powers on, it will send its device ID information and set default values for its sample rate, resolution and scaling. X0-X7 and Y0-Y7 are binary outputs of 0 towhich represent how far the mouse has moved in its respective directions since the last sample the least significant digit is on the right.
This is a visual representation of a byte of information being sent from the mouse to the host:.
Set Clock low 2. More information about LCDs and the flex code we used can be found here: Optical mice with wheels and additional buttons generally send a fourth data packet, but for this lab, that data was not needed.
Wait at least microseconds 3.
The ine XY coordinates will be displayed on an LCD screen and will be updated when the mouse moves. Wait for clock to go low R is for the right button and L is for the left button where 1 equals pressed and 0 equal unpressed. Set Data low 4.
Repeat steps indefinitely.