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pls send vhdl code for qudrature decoder......

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manuts

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am dng a project ...
i need to find out the velocity and position of a motor (real time) using FPGA.
for that qudrature encoder is used ,it gives 2 squre waves A,B
a& b signal always have a 90 degree phase diff: from these pulses the rotating direction we can find out that is if A leads B clockwise rotation and B leads a anti clockwise rotation , i need to find out the velocity of the motor for that velocity= angle traveled/time. for time meassurement no: pulses of aknown clock freq: i need to count in btw succesive qudrature encoder pulses . angle traveled can be find out counting no: of pulses from the encoder ....

so i reqesting u people to send me the code for counting the qudrature pulses depending on the direction
 

stou123

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I need the same thing! Did u implement urs? If yes please share!

thanks
 

lucbra

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Just look at opencores, you'll find what you need
 

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