Using default servo pin in BTT_SKR2 for pwm spindle control

[krishchan007]

Hi,
Is it possible to use default servo pin (PE5) in BTT_SKR2 for pwm spindle control. This pin has TIM9_CH1 as alternate function.

Thanks

[terjeio]

I do not have a board to test with, you can try adding it? Code is here. You'll have to swap the debounce timer with the PWM timer.

[krishchan007]

ALARM:1
[MSG:Reset to continue]
<Alarm|MPos:0.000,0.000,0.000,0.000,0.000|Bf:35,1020|FS:0,0|Pn:Z|Ov:100,100,100>
<Alarm|MPos:0.000,0.000,0.000,0.000,0.000|Bf:35,1020|FS:0,0|Pn:Z>

[terjeio]

Ok, the Z limit pin is asserted - this triggers the hard limits alarm: |Pn:Z

[krishchan007]

Yes. Thanks for the explanation. Looking forward to a solution for the "not responding" issue.

[terjeio]

Try switching to timer 13 for debounce in driver.h, there seems to be a conflict with USB for timer 12.

#if SPINDLE_PWM_TIMER_N == 9
#define DEBOUNCE_TIMER_N            13
#define DEBOUNCE_TIMER_IRQn         TIM8_UP_TIM13_IRQn       // !
#define DEBOUNCE_TIMER_IRQHandler   TIM8_UP_TIM13_IRQHandler // !
#else
...

I did not find anything in the reference manual related to this when I did a quick search, so I decided to try timer13.

[krishchan007]

Switched to timer 13. No issues regarding hard limits or PWM output whatsoever. Greatly appreciate your help. Thank you.