zrez Posted April 22, 2017 Share Posted April 22, 2017 PS/2 interface makes random data from the keyboard when using dev board power, does nothing when using external 5V, tried different keyboards, tried different connectors. Please advise. Link to comment Share on other sites More sharing options...
zrez Posted April 22, 2017 Author Share Posted April 22, 2017 @D@n A1: The board is a Nexys 4 Artix 7 (Limited Edition). A2: I put the data coming out of the Pmod port on the 7 segment display in hexadecimal. A3: I wrote some verilog code to sample the PS2C and PS2D. Problem: My sample rate was 100 MHz. Solution: Brought it down to 1 MHz that seemed to do the trick! Thanks for getting back to me so soon Dan. Link to comment Share on other sites More sharing options...
D@n Posted April 22, 2017 Share Posted April 22, 2017 @zrez, What board are you using? and ... how do you know the PS/2 is producing random data? What are you using to read from it? Dan Link to comment Share on other sites More sharing options...
zrez Posted April 22, 2017 Author Share Posted April 22, 2017 Keep your sample rate reasonable for the device. Link to comment Share on other sites More sharing options...
D@n Posted April 22, 2017 Share Posted April 22, 2017 @zrez, Does that mean you found the solution to your problem? I'm going to assume so: Congratulations! Post again if you need more help, Dan Link to comment Share on other sites More sharing options...
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PS/2 interface makes random data from the keyboard when using dev board power, does nothing when using external 5V, tried different keyboards, tried different connectors. Please advise.
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