Setup output pin for spindle PWM on a BBB

[a handsup]

Hello,

I try to run my milling machine with a Beaglebone black. I got the setup for all 3 axes but I am struggling with the spindle. I would like the PWM on the gpio P8.12, but whatever I try, LinuxCNC doesn't start anymore.

Here my spindle setup in the HAL:

loadrt pwmgen output_type=0
addf pwmgen.update servo-thread
#addf pwmgen.make-pulses base-thread

net spindle-cmd <= motion.spindle-speed-out => pwmgen.0.value
net spindle-enable <= motion.spindle-on => pwmgen.0.enable
net spindle-pwm <= pwmgen.0.pwm
#net spindle-pwm pwmgen.0.pwm => parport.0.pin-09-out
#net spindle-pwm pwmgen.0.pwm => bb_gpio.p8.out-12

setp pwmgen.0.pwm-freq  2000.0
setp pwmgen.0.scale     10000.0
setp pwmgen.0.offset    0.0
setp pwmgen.0.dither-pwm true

net spindle-cw <= motion.spindle-forward
net spindle-brake <= motion.spindle-brake

#setp pwmgen.0.pwm         0x4C
#setp pwmgen.0.pwm => bb_gpio.p8.out-12
#setp pwmgen.0.pin         0x4C
#setp [PRUCONF](DRIVER).pwmgen.0.pin         0x4C
#net spindle-pwm => bb_gpio.p8.out-12

Could anyone help me please? I would really appreciate since I'm trying a while now.

Thank you!

Alex

my mill: https://www.alex-handfest.de/sonst/sonst_cnchf2.html