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Disable interrupts while communicating with DHTxx.

This commit is contained in:
vowstar 2015-06-20 02:08:20 +08:00
parent 3430e5f826
commit 75c3cf29c2
1 changed files with 4 additions and 0 deletions
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4
app/dhtlib/dht.c
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@ -252,6 +252,8 @@ int dht_readSensor(uint8_t pin, uint8_t wakeupDelay)
DIRECT_WRITE_LOW(pin);
// delay(wakeupDelay);
for (i = 0; i < wakeupDelay; i++) os_delay_us(1000);
// Disable interrupts
os_intr_lock();
// digitalWrite(pin, HIGH); // T-go
DIRECT_WRITE_HIGH(pin);
os_delay_us(40);
@ -303,6 +305,8 @@ int dht_readSensor(uint8_t pin, uint8_t wakeupDelay)
idx++;
}
}
// Enable interrupts
os_intr_unlock();
// pinMode(pin, OUTPUT);
DIRECT_MODE_OUTPUT(pin);
// digitalWrite(pin, HIGH);