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pid output zero problem

Hello everyone,

I am having problem with my FPGA PID control. When I want to control the speed of motor, the output of PID is always 0. Why is that, and hoce can I fix it. 

I would be grateful for any help.

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I forgot to put  pokit of my program

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Are you able to use highlight execution and probes to see where exactly the problem lies? I might check the inputs to the function to make sure you're not getting values of 0 earlier and that the inputs to your PID function are what you expect.

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