CMS/Marlin
3
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Simplified fix for babystep pulse width

Browse Source 
Alternative to the apparently superfluous double delay
This commit is contained in:
Scott Lahteine 2018-05-19 17:26:11 -05:00
parent 65270d6a96
commit 7dc03ce721
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Marlin/src/module/stepper.cpp
View File

@ -2136,8 +2136,7 @@ void Stepper::report_positions() {
#define _APPLY_DIR(AXIS, INVERT) AXIS ##_APPLY_DIR(INVERT, true)
#if EXTRA_CYCLES_BABYSTEP > 20
hal_timer_t pulse_start;
#define _SAVE_START pulse_start = HAL_timer_get_count(STEP_TIMER_NUM)
#define _SAVE_START const hal_timer_t pulse_start = HAL_timer_get_count(STEP_TIMER_NUM)
#define _PULSE_WAIT while (EXTRA_CYCLES_BABYSTEP > (uint32_t)(HAL_timer_get_count(STEP_TIMER_NUM) - pulse_start) * (PULSE_TIMER_PRESCALE)) { /* nada */ }
#else
#define _SAVE_START NOOP
@ -2155,11 +2154,10 @@ void Stepper::report_positions() {
#define BABYSTEP_AXIS(AXIS, INVERT, DIR) { \
const uint8_t old_dir = _READ_DIR(AXIS); \
_ENABLE(AXIS); \
_SAVE_START; \
_APPLY_DIR(AXIS, _INVERT_DIR(AXIS)^DIR^INVERT); \
_PULSE_WAIT; \
_APPLY_STEP(AXIS)(!_INVERT_STEP_PIN(AXIS), true); \
DELAY_NS(400); /* DRV8825 */ \
_SAVE_START; \
_APPLY_STEP(AXIS)(!_INVERT_STEP_PIN(AXIS), true); \
_PULSE_WAIT; \
_APPLY_STEP(AXIS)(_INVERT_STEP_PIN(AXIS), true); \
_APPLY_DIR(AXIS, old_dir); \
@ -2229,6 +2227,8 @@ void Stepper::report_positions() {
Y_DIR_WRITE(INVERT_Y_DIR ^ z_direction);
Z_DIR_WRITE(INVERT_Z_DIR ^ z_direction);
DELAY_NS(400); // DRV8825
_SAVE_START;
X_STEP_WRITE(!INVERT_X_STEP_PIN);