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Endstop interrupt refinement

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At the start of a move, check if the endstops are already triggered.
The 'change' interrupts will not see a change if already triggered.
This commit is contained in:
AnHardt 2016-11-15 16:41:13 +01:00
parent 79c8591192
commit 88b38eafd8
1 changed files with 5 additions and 0 deletions
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5
Marlin/stepper.cpp
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@ -359,6 +359,11 @@ void Stepper::isr() {
step_events_completed = 0; step_events_completed = 0;
#if ENABLED(ENDSTOP_INTERRUPTS_FEATURE)
e_hit = 2; // Needed for the case an endstop is already triggered before the new move begins.
// No 'change' can be detected.
#endif
#if ENABLED(Z_LATE_ENABLE) #if ENABLED(Z_LATE_ENABLE)
if (current_block->steps[Z_AXIS] > 0) { if (current_block->steps[Z_AXIS] > 0) {
enable_z(); enable_z();