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added som documentation for other contributors

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Simen Svale Skogsrud 2011-02-11 23:54:13 +01:00
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Allocation of AVR peripherals in Grbl
=====================================
See config.h for pin allocation.
The UART is handled by 'wiring_serial' and used primarily for streaming gcode
16 bit Timer 1 and the TIMER1_COMPA interrupt is used by the 'stepper' module to handle step events
8 bit Timer 2 and the TIMER2_OVF interrupt is used by the 'stepper' module to reset the step pins
after a step event