bneedhamia / dhtblesensor Goto Github PK
View Code? Open in Web Editor NEW(obsolete) Arduino 101 Sketch to deliver temperature and humidity from a DHT22/RHT03 sensor over BLE
License: GNU Lesser General Public License v2.1
(obsolete) Arduino 101 Sketch to deliver temperature and humidity from a DHT22/RHT03 sensor over BLE
License: GNU Lesser General Public License v2.1
I believe that
if (nowMs - whenSensedMs < TEMPERATURE_UPDATE_INTERVAL_MS) {
should instead be
if ((long) (nowMs - whenSensedMs) < TEMPERATURE_UPDATE_INTERVAL_MS) {
to match the pattern described in https://playground.arduino.cc/Code/TimingRollover
This change needs to be made and tested.
Now I'm confused: the DHT22 requires a pull-up resistor. I thought I didn't add one because I used the Arduino internal pull-up resistor (set by writing HIGH) to an input pin). But I don't see any evidence of that code to turn on the resisiter here. TO DO: add code to turn on the internal pull-up and try it out.
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