neeed help with additional pwm 6i25 and 7i76

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1 year 7 months ago - 1 year 7 months ago #324912 by mmt
now i have no idea what is going on.

with the 5i25_7i76x2_2pd loaded my hal does load the pwm without alarm (i have not checked actual output though) but my A(3) axis does not work. If i revert to 5i25_7i76x2 A axis is good but obviously no pwm

???

thanks
Last edit: 1 year 7 months ago by mmt.

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1 year 7 months ago #324918 by mmt
another question

i know the standard io pins can not pwm very fast.

i only need 10K freq can they acheive that?

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1 year 7 months ago #324919 by PCW

now i have no idea what is going on.

with the 5i25_7i76x2_2pd loaded my hal does load the pwm without alarm (i have not checked actual output though) but my A(3) axis does not work. If i revert to 5i25_7i76x2 A axis is good but obviously no pwm

???

thanks
 

There are only 3 stepgens per 7I76 in that configuration, so that's expected.
You probably need a  configuration with just 1 PWMgen per 7I76.

I can make one when I get a chance.

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1 year 7 months ago #324920 by PCW

another question

i know the standard io pins can not pwm very fast.

i only need 10K freq can they acheive that?
 
Not likely, you need hardware PWM for that.

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1 year 7 months ago #324921 by mmt
i am assuming by your lack of a firmware file one needs to be created. Is there a way I can do this ?

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1 year 7 months ago #324922 by mmt
nevermind i got ahead of myself i now see you said you could create one. That would be much appreciated.

Thank you for all your help

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