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.
main.cpp@1:bc8bfc12d3c4, 2016-08-17 (annotated)
- Committer:
- Prashant_Dew
- Date:
- Wed Aug 17 10:45:56 2016 +0000
- Revision:
- 1:bc8bfc12d3c4
- Parent:
- 0:9d72427a0730
Commit for dht22 TH Sensor
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
GregC | 0:9d72427a0730 | 1 | |
GregC | 0:9d72427a0730 | 2 | #include "mbed.h" |
GregC | 0:9d72427a0730 | 3 | #include "DHT.h" |
GregC | 0:9d72427a0730 | 4 | |
Prashant_Dew | 1:bc8bfc12d3c4 | 5 | DHT sensor(D4, DHT22); |
GregC | 0:9d72427a0730 | 6 | |
GregC | 0:9d72427a0730 | 7 | int main() |
GregC | 0:9d72427a0730 | 8 | { |
GregC | 0:9d72427a0730 | 9 | int error = 0; |
GregC | 0:9d72427a0730 | 10 | float h = 0.0f, c = 0.0f, f = 0.0f, k = 0.0f, dp = 0.0f, dpf = 0.0f; |
GregC | 0:9d72427a0730 | 11 | |
GregC | 0:9d72427a0730 | 12 | while(1) { |
GregC | 0:9d72427a0730 | 13 | wait(2.0f); |
GregC | 0:9d72427a0730 | 14 | error = sensor.readData(); |
GregC | 0:9d72427a0730 | 15 | if (0 == error) { |
GregC | 0:9d72427a0730 | 16 | c = sensor.ReadTemperature(CELCIUS); |
GregC | 0:9d72427a0730 | 17 | f = sensor.ReadTemperature(FARENHEIT); |
GregC | 0:9d72427a0730 | 18 | k = sensor.ReadTemperature(KELVIN); |
GregC | 0:9d72427a0730 | 19 | h = sensor.ReadHumidity(); |
GregC | 0:9d72427a0730 | 20 | dp = sensor.CalcdewPoint(c, h); |
GregC | 0:9d72427a0730 | 21 | dpf = sensor.CalcdewPointFast(c, h); |
GregC | 0:9d72427a0730 | 22 | printf("Temperature in Kelvin: %4.2f, Celcius: %4.2f, Farenheit %4.2f\n", k, c, f); |
GregC | 0:9d72427a0730 | 23 | printf("Humidity is %4.2f, Dewpoint: %4.2f, Dewpoint fast: %4.2f\n", h, dp, dpf); |
GregC | 0:9d72427a0730 | 24 | } else { |
GregC | 0:9d72427a0730 | 25 | printf("Error: %d\n", error); |
GregC | 0:9d72427a0730 | 26 | } |
GregC | 0:9d72427a0730 | 27 | } |
GregC | 0:9d72427a0730 | 28 | } |