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Improve LV8729 stepping (#13776)

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This commit is contained in:
chai-md
2019-05-12 09:02:19 +09:00
committed by Scott Lahteine
parent 991ee7552b
commit 940ff8e7c8
79 changed files with 245 additions and 160 deletions
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5
Marlin/Configuration_adv.h
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@@ -1209,7 +1209,8 @@
/**
* Minimum stepper driver pulse width (in µs)
* 0 : Smallest possible width the MCU can produce, compatible with TMC2xxx drivers
* 1 : Minimum for A4988, A5984, and LV8729 stepper drivers
* 0 : Minimum 500ns for LV8729, adjusted in stepper.h
* 1 : Minimum for A4988 and A5984 stepper drivers
* 2 : Minimum for DRV8825 stepper drivers
* 3 : Minimum for TB6600 stepper drivers
* 30 : Minimum for TB6560 stepper drivers
@@ -1224,8 +1225,8 @@
* 500000 : Maximum for A4988 stepper driver
* 400000 : Maximum for TMC2xxx stepper drivers
* 250000 : Maximum for DRV8825 stepper driver
* 200000 : Maximum for LV8729 stepper driver
* 150000 : Maximum for TB6600 stepper driver
* 130000 : Maximum for LV8729 stepper driver
* 15000 : Maximum for TB6560 stepper driver
*
* Override the default value based on the driver type set in Configuration.h.

8
Marlin/src/inc/Conditionals_post.h
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@@ -514,8 +514,10 @@
#define MINIMUM_STEPPER_PULSE 3
#elif HAS_DRIVER(DRV8825)
#define MINIMUM_STEPPER_PULSE 2
#elif HAS_DRIVER(A4988) || HAS_DRIVER(LV8729) || HAS_DRIVER(A5984)
#elif HAS_DRIVER(A4988) || HAS_DRIVER(A5984)
#define MINIMUM_STEPPER_PULSE 1
#elif HAS_DRIVER(LV8729)
#define MINIMUM_STEPPER_PULSE 0
#elif TRINAMICS
#define MINIMUM_STEPPER_PULSE 0
#else
@@ -526,10 +528,10 @@
#ifndef MAXIMUM_STEPPER_RATE
#if HAS_DRIVER(TB6560)
#define MAXIMUM_STEPPER_RATE 15000
#elif HAS_DRIVER(LV8729)
#define MAXIMUM_STEPPER_RATE 130000
#elif HAS_DRIVER(TB6600)
#define MAXIMUM_STEPPER_RATE 150000
#elif HAS_DRIVER(LV8729)
#define MAXIMUM_STEPPER_RATE 200000
#elif HAS_DRIVER(DRV8825)
#define MAXIMUM_STEPPER_RATE 250000
#elif TRINAMICS

12
Marlin/src/module/stepper.h
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@@ -156,9 +156,11 @@
#define MIN_ISR_LOOP_CYCLES (ISR_X_STEPPER_CYCLES + ISR_Y_STEPPER_CYCLES + ISR_Z_STEPPER_CYCLES + ISR_E_STEPPER_CYCLES + ISR_MIXING_STEPPER_CYCLES)
// Calculate the minimum MPU cycles needed per pulse to enforce, limited to the max stepper rate
#define _MIN_STEPPER_PULSE_CYCLES(N) MAX((unsigned long)((F_CPU) / (MAXIMUM_STEPPER_RATE)), ((F_CPU) / 500000UL) * (N))
#define _MIN_STEPPER_PULSE_CYCLES(N) MAX(uint32_t((F_CPU) / (MAXIMUM_STEPPER_RATE)), ((F_CPU) / 500000UL) * (N))
#if MINIMUM_STEPPER_PULSE
#define MIN_STEPPER_PULSE_CYCLES _MIN_STEPPER_PULSE_CYCLES((unsigned long)(MINIMUM_STEPPER_PULSE))
#define MIN_STEPPER_PULSE_CYCLES _MIN_STEPPER_PULSE_CYCLES(uint32_t(MINIMUM_STEPPER_PULSE))
#elif HAS_DRIVER(LV8729)
#define MIN_STEPPER_PULSE_CYCLES uint32_t((((F_CPU) - 1) / 2000000) + 1) // 0.5µs, aka 500ns
#else
#define MIN_STEPPER_PULSE_CYCLES _MIN_STEPPER_PULSE_CYCLES(1UL)
#endif
@@ -167,7 +169,11 @@
// adding the "start stepper pulse" code section execution cycles to account for that not all
// pulses start at the beginning of the loop, so an extra time must be added to compensate so
// the last generated pulse (usually the extruder stepper) has the right length
#define MIN_PULSE_TICKS (((PULSE_TIMER_TICKS_PER_US) * (unsigned long)(MINIMUM_STEPPER_PULSE)) + ((MIN_ISR_START_LOOP_CYCLES) / (unsigned long)(PULSE_TIMER_PRESCALE)))
#if HAS_DRIVER(LV8729)
#define MIN_PULSE_TICKS ((((PULSE_TIMER_TICKS_PER_US) + 1) / 2) + ((MIN_ISR_START_LOOP_CYCLES) / uint32_t(PULSE_TIMER_PRESCALE)))
#else
#define MIN_PULSE_TICKS (((PULSE_TIMER_TICKS_PER_US) * uint32_t(MINIMUM_STEPPER_PULSE)) + ((MIN_ISR_START_LOOP_CYCLES) / uint32_t(PULSE_TIMER_PRESCALE)))
#endif
// Calculate the extra ticks of the PULSE timer between step pulses
#define ADDED_STEP_TICKS (((MIN_STEPPER_PULSE_CYCLES) / (PULSE_TIMER_PRESCALE)) - (MIN_PULSE_TICKS))