uint8_t DHT::getStatus(void) {
// If temperature is at an extreme, set to warning...
if (_lastTemperature > 100 || _lastTemperature < 60) {
REMOVE_BIT(_status, STATUS_TEMP_GOOD);
ADD_BIT(_status, STATUS_TEMP_WARN);
// If temperature is really extreme, set to alert...
if (_lastTemperature > 110 || _lastTemperature < 40) {
REMOVE_BIT(_status, STATUS_TEMP_WARN);
ADD_BIT(_status, STATUS_TEMP_ALRT);
}
}
// If humidity is low, set to warning...
if (_lastHumidity < 60) {
REMOVE_BIT(_status, STATUS_HUMI_GOOD);
ADD_BIT(_status, STATUS_HUMI_WARN);
// If humidity is extreme, set to alert...
if (_lastHumidity < 20) {
REMOVE_BIT(_status, STATUS_HUMI_WARN);
ADD_BIT(_status, STATUS_HUMI_ALRT);
}
}
return (_status);
}
static guint
gegl_tile_backend_swap_hashfunc (gconstpointer key)
{
const SwapEntry *entry = key;
guint hash;
gint i;
gint srcA = entry->x;
gint srcB = entry->y;
gint srcC = entry->z;
/* interleave the 10 least significant bits of all coordinates,
* this gives us Z-order / morton order of the space and should
* work well as a hash
*/
hash = 0;
for (i = 9; i >= 0; i--)
{
#define ADD_BIT(bit) do { hash |= (((bit) != 0) ? 1 : 0); hash <<= 1; } while (0)
ADD_BIT (srcA & (1 << i));
ADD_BIT (srcB & (1 << i));
ADD_BIT (srcC & (1 << i));
#undef ADD_BIT
}
return hash;
}
DHT::DHT(void) {
_maxCycles = microsecondsToClockCycles(DHT_MAX_CYCLES);
_lastTemperature = _lastHumidity = 0;
ADD_BIT(_status, STATUS_TEMP_GOOD | STATUS_HUMI_GOOD);
DEBUG_PRINTLN("DHT loaded.");
}
