7c80 install on rpi 4

Thanks PCW !

Looks like I oversaw that and took the logic going backwards from the spindle outputs - but now looks like success!

Hi PCW,

I played today with the spindle configuration as you proposed in the post, but the 7c80 is missing the pwm output in my "as received " condition 
...
net spindle-output => [HMOT](CARD0).pwmgen.00.value
net spindle-enable => [HMOT](CARD0).pwmgen.00.enable
...
unless there is a different flash for the card?

it looks like the pwmgen (and spindle encoder) are disabled in the hal file:

loadrt hm2_rpspi config=" num_encoders=0 num_pwmgens=0 num_stepgens=6"

when i use this setup for the spindle,
functions (turn spindle CW & CCW) work well
but the functions (turn spindle slower & faster) are reversed.
When I start the spindle I have a voltage of 10 volts between the pins (spindle output) and (spindle -)
When I press on (turn spindle faster) the tension decreases

I think the PWM is active low on the 7C80 so try:

setp hm2_7c80.0.pwmgen.00.out0.invert_output true

I am trying to connect a differential line encoder (amt332d-v) on my spindle with this configuration.
W1,W2 &W3 are down
pins encoder.00.input-a & encoder.00.input-b are always high
and encoder.00.input-index are always low.