FRDM-K64F Code Share / Mbed 2 deprecated FRDM-K64F_Seeed-Grove_Temp-Humidity_Example

FRDM-K64F example featuring the Seeed Grove Temperature and Humidity sensor

Dependencies:   DHT mbed

Fork of Seeed_Grove_Temp_Humidity_Example by Seeed

The Temperature and Humidity sensor on the Grove module is an Analog DHT11 product

Connect the Grove module to the A0 input of the Seeed Grove Shield V2

To display the Temperature and the Humidity measurement, open an hyperterminal window, select Serial communication and choose the mbed serial port with a 9600 data speed.

Usefull links

More information about the Seeed module and the corresponding mbed component

main.cpp@2:39e8fc849cb1, 2015-12-31 (annotated)

Committer:
GregC
Date:
Thu Dec 31 00:26:07 2015 +0000
Revision:
2:39e8fc849cb1
Parent:
0:c12c28a0f9e7 
FRDM-K64F example featuring the Seeed Grove Temperature and Humidity Sensor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sam_grove 0:c12c28a0f9e7 1
sam_grove 0:c12c28a0f9e7 2 #include "mbed.h"
sam_grove 0:c12c28a0f9e7 3 #include "DHT.h"
sam_grove 0:c12c28a0f9e7 4
GregC 2:39e8fc849cb1 5 DHT sensor(A0, DHT11);
sam_grove 0:c12c28a0f9e7 6
sam_grove 0:c12c28a0f9e7 7 int main()
sam_grove 0:c12c28a0f9e7 8 {
sam_grove 0:c12c28a0f9e7 9 int error = 0;
sam_grove 0:c12c28a0f9e7 10 float h = 0.0f, c = 0.0f, f = 0.0f, k = 0.0f, dp = 0.0f, dpf = 0.0f;
sam_grove 0:c12c28a0f9e7 11
sam_grove 0:c12c28a0f9e7 12 while(1) {
sam_grove 0:c12c28a0f9e7 13 wait(2.0f);
sam_grove 0:c12c28a0f9e7 14 error = sensor.readData();
sam_grove 0:c12c28a0f9e7 15 if (0 == error) {
sam_grove 0:c12c28a0f9e7 16 c = sensor.ReadTemperature(CELCIUS);
sam_grove 0:c12c28a0f9e7 17 f = sensor.ReadTemperature(FARENHEIT);
sam_grove 0:c12c28a0f9e7 18 k = sensor.ReadTemperature(KELVIN);
sam_grove 0:c12c28a0f9e7 19 h = sensor.ReadHumidity();
sam_grove 0:c12c28a0f9e7 20 dp = sensor.CalcdewPoint(c, h);
sam_grove 0:c12c28a0f9e7 21 dpf = sensor.CalcdewPointFast(c, h);
sam_grove 0:c12c28a0f9e7 22 printf("Temperature in Kelvin: %4.2f, Celcius: %4.2f, Farenheit %4.2f\n", k, c, f);
sam_grove 0:c12c28a0f9e7 23 printf("Humidity is %4.2f, Dewpoint: %4.2f, Dewpoint fast: %4.2f\n", h, dp, dpf);
sam_grove 0:c12c28a0f9e7 24 } else {
sam_grove 0:c12c28a0f9e7 25 printf("Error: %d\n", error);
sam_grove 0:c12c28a0f9e7 26 }
sam_grove 0:c12c28a0f9e7 27 }
sam_grove 0:c12c28a0f9e7 28 }