Re: [ts-7000] PWM

[Ferrug <>]

Wow, thx dude.

It was exactly what I needed .. sorry did not reply before because I had not seen this email.

But very cool, thanks a lot. I'm here testing to see if I can make it work.

Could you tell me how do I access the registers from a C code running on Linux? for example, often need to update i_duty.

Thanks again ..
Fabio

2010/11/7 David Preza H <>

 

[Attachment(s) from David Preza H included below]

Right now I am working in some code to control 6 pwm, so I can move some TULA (piezoelectric actuators) with the TS7500. The code is still in work, but I will attach a verilog file to generate a PWM based on a clk, number of ticks to generate the frequency, and numbers of ticks to get the duty cicle. The i_enable needs to be high in order to actually produce an output.

I am still working in the interaction with the Wishbone and the Lattice FPGA on the TS7500. However, I think you can override the functionality of some pins, if you create new output pads, with the output of the code, and when you map which one goes to which pad, you can just detach the pins you don't use (I did it for pin 40, and the test was successful). However, don't forget to keep the other pads and pins in their place.

I am not a hardware designer, neither a verilog expert, but I hope the code helps you. I think the next weekend I will finish the wishbone interaction part.

Regards,

Enrique

-- 
"Dê-me uma alavanca e um bom ponto de apoio que moverei o mundo." Archimedes

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