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AP_Baro: switch to SREG = oldSREG pattern for interrupt mask/restore

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This commit is contained in:
Andrew Tridgell 2012-11-20 22:30:12 +11:00
parent fc63087cb8
commit e331634bc5
1 changed files with 2 additions and 1 deletions
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3
libraries/AP_Baro/AP_Baro_MS5611.cpp
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@ -209,13 +209,14 @@ uint8_t AP_Baro_MS5611::read()
uint8_t d1count, d2count;
// we need to disable interrupts to access
// _s_D1 and _s_D2 as they are not atomic
uint8_t oldSREG = SREG;
cli();
sD1 = _s_D1; _s_D1 = 0;
sD2 = _s_D2; _s_D2 = 0;
d1count = _d1_count; _d1_count = 0;
d2count = _d2_count; _d2_count = 0;
_updated = false;
sei();
SREG = oldSREG;
if (d1count != 0) {
D1 = ((float)sD1) / d1count;
}