bissen21/Marlin_Firmware
1
0
Fork 0
Code Issues Pull Requests Projects Releases 4 Wiki Activity

Improve LV8729 stepping (#13776)

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

8
Marlin/src/inc/Conditionals_post.h
View File

@ -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
View File

@ -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))