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Disabling an ISR on ARM has 3 instructions of latency. A Memory barrier is REQUIRED to ensure proper and predictable disabling. Memory barriers are expensive, so avoid disabling if already disabled (See https://mcuoneclipse.com/2015/10/16/nvic-disabling-interrupts-on-arm-cortex-m-and-the-need-for-a-memory-barrier-instruction/) |
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.. | ||
config | ||
core | ||
feature | ||
gcode | ||
HAL | ||
inc | ||
lcd | ||
libs | ||
module | ||
pins | ||
sd | ||
Marlin.cpp | ||
Marlin.h |