Sebastianv650 50059690e0 Allow UART ISRs inside the stepper ISR ...

If the stepper ISR takes too long, chars are lost which leads to serial
communication errors like "Line number not +1" or "Wrong checksum". In
worst case, the printer can even do crazy moves.

With this changes, UART interrupts are handled inside the stepper ISR.
This way, no chars should be lost.

2016-11-20 13:09:12 +01:00

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