ManuelW/grbl-LPC-CoreXY
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Isolate atomic bit flag for execution.

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- Denoted bit_true_atomic only for sys.execute bit settings. All other
bit_true type calls are for local variables only and don’t need atomic
access. Still looking into other ways of setting these flags without
requiring atomic access, but this is a patch for now.
This commit is contained in:
Sonny Jeon
2014-07-06 19:05:12 -06:00
parent a20d3e9855
commit 87c5703200
7 changed files with 28 additions and 26 deletions
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8
nuts_bolts.h
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@ -44,9 +44,11 @@
// Bit field and masking macros
#define bit(n) (1 << n)
#define bit_true(x,mask) {uint8_t sreg = SREG; cli(); (x) |= (mask); SREG = sreg; }
#define bit_false(x,mask) {uint8_t sreg = SREG; cli(); (x) &= ~(mask); SREG = sreg; }
#define bit_toggle(x,mask) {uint8_t sreg = SREG; cli(); (x) ^= (mask); SREG = sreg; }
#define bit_true_atomic(x,mask) {uint8_t sreg = SREG; cli(); (x) |= (mask); SREG = sreg; }
#define bit_false_atomic(x,mask) {uint8_t sreg = SREG; cli(); (x) &= ~(mask); SREG = sreg; }
#define bit_toggle_atomic(x,mask) {uint8_t sreg = SREG; cli(); (x) ^= (mask); SREG = sreg; }
#define bit_true(x,mask) (x) |= (mask)
#define bit_false(x,mask) (x) &= ~(mask)
#define bit_istrue(x,mask) ((x & mask) != 0)
#define bit_isfalse(x,mask) ((x & mask) == 0)