Support for dht22 grove temperature and humidity sensor
Fork of frdm_Grove_Temp-Humidity_Example by
This repository supports Grove Temperature and Humidity Sensor Pro.
Diff: main.cpp
- Revision:
- 0:9d72427a0730
- Child:
- 1:bc8bfc12d3c4
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Dec 31 22:03:48 2015 +0000 @@ -0,0 +1,28 @@ + +#include "mbed.h" +#include "DHT.h" + +DHT sensor(D4, DHT11); + +int main() +{ + int error = 0; + float h = 0.0f, c = 0.0f, f = 0.0f, k = 0.0f, dp = 0.0f, dpf = 0.0f; + + while(1) { + wait(2.0f); + error = sensor.readData(); + if (0 == error) { + c = sensor.ReadTemperature(CELCIUS); + f = sensor.ReadTemperature(FARENHEIT); + k = sensor.ReadTemperature(KELVIN); + h = sensor.ReadHumidity(); + dp = sensor.CalcdewPoint(c, h); + dpf = sensor.CalcdewPointFast(c, h); + printf("Temperature in Kelvin: %4.2f, Celcius: %4.2f, Farenheit %4.2f\n", k, c, f); + printf("Humidity is %4.2f, Dewpoint: %4.2f, Dewpoint fast: %4.2f\n", h, dp, dpf); + } else { + printf("Error: %d\n", error); + } + } +}