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Please help if u can...

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catalinutz

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I have a Nexsys 2 board from Digilent. I also have the PMODJSTK. I am trying to use the joystick to control a couple of motors. I have the motor control part of the programing done. I can control the speed and direction of two different motors using the buttons and switches on the board. I am trying to write a program to get the joystick to light certain LED's - just so I can get the communication between the two to work and then I will combine the two programs. I can't get the commmunication between the board and the PMOD to work correctly. I am programing in Verilog (it's what I learned) - can anybody help?
 

hi
What interface joystick has? In documetation on it, some his command should describe.
 

**broken link removed** this is all the docuymantation ...
 

PmodJSTK and your Nexys 2 will communicate via SPI. Nexys will be master and PmodJSTK will be slave. You should implement SPI controller in Spartan 3E. FPGA will send 5 bytes, first to light leds, the remaining four bytes that are shifted in will ignored by the PmodJSTK. PmodJSTK will response with 5 bytes X (low) X(high) Y (low) Y(high) Buttons.
 
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