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Reduce Step Smoothing ceiling to 50% CPU usage (#18719)

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This commit is contained in:
Jason Smith
2020-07-19 19:53:29 -07:00
committed by GitHub
parent 4a55bdb165
commit a847f37d43
2 changed files with 7 additions and 5 deletions
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6
Marlin/src/module/stepper.h
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@ -229,8 +229,10 @@
#define MAX_STEP_ISR_FREQUENCY_2X ((F_CPU) / ISR_EXECUTION_CYCLES(2))
#define MAX_STEP_ISR_FREQUENCY_1X ((F_CPU) / ISR_EXECUTION_CYCLES(1))
// The minimum allowable frequency for step smoothing will be 1/10 of the maximum nominal frequency (in Hz)
#define MIN_STEP_ISR_FREQUENCY MAX_STEP_ISR_FREQUENCY_1X
// The minimum step ISR rate used by ADAPTIVE_STEP_SMOOTHING to target 50% CPU usage
// This does not account for the possibility of multi-stepping.
// Perhaps DISABLE_MULTI_STEPPING should be required with ADAPTIVE_STEP_SMOOTHING.
#define MIN_STEP_ISR_FREQUENCY (MAX_STEP_ISR_FREQUENCY_1X / 2)
//
// Stepper class definition