VHDL

[Sara]

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i need some help in how to control unipolar stepper motor 48 step each 7.5· to move·it ·by using VHDL if ay one know please i need your help


Thanks

Sara
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[SteveW]

This is tricky to answer, since you give so little information.
Do you know how to drive a stepper motor without VHDL?
Do you know how to write VHDL without worrying about stepper motors?
Do you have some hardware with an FPGA and a stepper motor attached?
Is this just a homework assignment? If so, we need more details, since, as it is, there is not enough information to help. (And that's 'help' as in 'assist', not 'help' as in 'give you a perfectly formatted answer you can hand in on Monday'.)

Steve

[Paul Baker]

The last article in this pdf may help you understand how to achieve it, it is for a bipolar stepper, but you could use the same state machine concept for a unipolar motor.

http://www.edn.com/contents/images/6413791.pdf

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Paul Baker (mailto:pbaker@parallax.com)
Propeller Applications Engineer
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Parallax, Inc. (http://www.parallax.com)