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docs: Update FAQ on which mcus have hard pwm support 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2021-03-26 12:39:47 -04:00
parent 59c4c49893
commit dc55142437
1 changed files with 1 additions and 2 deletions
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docs/FAQ.md
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@ -375,8 +375,7 @@ similar devices to any general purpose IO pin. However, fans and
output_pin devices may be optionally configured to use `hardware_pwm:
True`, in which case the micro-controller must support hardware PWM on
the pin (otherwise, Klipper will report a "Not a valid PWM pin"
error). Note that hardware PWM is currently only supported on the avr,
atsam, samd21, and linux micro-controllers.
error).
IRQ pins (or Interrupt pins): Klipper does not use hardware interrupts
on IO pins, so it is never necessary to wire a device to one of these