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split off the DHT11 conversion, corrected the algorithm for temperatures below 0 degrees celsius.

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This commit is contained in:
Simon IJskes 2019-02-08 22:18:10 +01:00
parent d6488c1fbe
commit 57fe95c1be
1 changed files with 9 additions and 0 deletions
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9
DHT.cpp
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@ -39,6 +39,15 @@ float DHT::readTemperature(bool S, bool force) {
if (read(force)) { if (read(force)) {
switch (_type) { switch (_type) {
case DHT11: case DHT11:
f = data[2];
if (data[3] & 0x80) {
f *= -1 -f ;
}
f += (data[3] & 0x0f) * 0.1;
if(S) {
f = convertCtoF(f);
}
break;
case DHT12: case DHT12:
f = data[2]; f = data[2];
f += (data[3] & 0x0f) * 0.1; f += (data[3] & 0x0f) * 0.1;