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History

AnHardt f3eee02596 Introduce endstop interrupts If ENDSTOP_INTERRUPTS_FEATURE is enabled this tries to set up interrupt routines for all used endstop pins. If this worked without errors, `endstops.update()` is called only if one of the endstops changed its state. The new interrupt routines do not really check the endstops and react upon them. All what they do, is to set a flag if it makes sense to call the endstop test we are used to. This can be used on: * ARM (DUE) based boards - all pins can raise interrupts, * RAMPS - all 6 endstop pins plus some other on EXT-2 can raise interrupts, * RAMPS based boards - as long the designers did not change the pins for the endstops or at least left enough, * all boards, if there are enough pins that can raise interrupts, and you are willing/able to swap with pins dedicated to other purpose.	8 years ago
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pin_interrupt_test.ino	Introduce endstop interrupts	8 years ago

AnHardt f3eee02596 Introduce endstop interrupts

If ENDSTOP_INTERRUPTS_FEATURE is enabled this tries to set up interrupt routines
for all used endstop pins. If this worked without errors, `endstops.update()` is called
only if one of the endstops changed its state.

The new interrupt routines do not really check the endstops and react upon them. All what they
do, is to set a flag if it makes sense to call the endstop test we are used to.

This can be used on:
* ARM (DUE) based boards - all pins can raise interrupts,
* RAMPS - all 6 endstop pins plus some other on EXT-2 can raise interrupts,
* RAMPS based boards - as long the designers did not change the pins for the endstops or at least left enough,
* all boards, if there are enough pins that can raise interrupts, and you are willing/able to swap with pins dedicated to other purpose.

pin_interrupt_test.ino

Introduce endstop interrupts