Mesa 7i43 / 7i49 / 7i37 FIrmware Needed

What is the resolver scale? or better still check the resolver angle when the shaft is rotated. If this is not right its likely a bitfile problem. I can make and check a new bitfile but it will be Tuesday before I can get to it

I checked the resolver angle and it stayed at 1. Sounds like I need a new bitfile. I'll look forward to Tuesday. Thanks,

-Scott

Actually I just read about compiling a bit file myself. Do I need to do anything special to fix this issue or just try to compile one by putting the correct name in the FIRMWARE.TXT when I compile? Something tells me it can't be that easy.

-Scott

You would have to use mesa's source to make a working resolver interface
and that source is not currently build-able with linuxcnc's scripts.
Its probably a lot easier to wait till Tuesday

the only line i can see you have differently to mine is
net z-pos-fb <= hm2_7i43.0.resolver.01.position => pid.1.feedback
i.e linking the feedback ...

building the fpga source is not for the faint hearted , although i'm not ruling out the bit file , the 7i43-4 version i posted is from a working system

i'll check the latest resolver build into my scripts and see how that builds

unfortunatly , i dont have a resolver to hand to test localy .

iv'e posted here the working files just in case you can spot a typo or something similar
i'm wondering if you have too much voltage swing across the resolver and it's swamping the input to the mesa card ..

i'll bow to PCW having the answer on this one ..

i notice your showing a resolver scale of 4000 , this is to me a bit on the low side , as you can see in my files their a lot higher
have you details on the resolvers you have

Yes I didn't manually add that feedback line onto the Z axis, as I've been doing all of my testing on the X axis and pncconfig doesn't put that feedback in for some reason. But I do have that linked on the X axis. Also, I haven't set the resolver scale, just using defaults from pncconf and I was going to worry about that later.