NXP / 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 FRDM-K64F_Seeed-Grove_Temp-Humidity_Example by Freescale

Simply Import this Program into your mbed compiler
Select Compile to generate the binary file
Open an Hyperterminal window and connect to the mbed Serial Port (COMxx) peripheral using speed 9600bps
Plug the Grove Shield v2 on the top of your FRDM-K64F
Connect on end of the 4-pin Grove cable to the Temperature and Humidity module and the other end to the port A1 of the Grove Adapter.

Drag n drop the FRDM-K64F_Seeed-Grove_Temp-Humidity_Example.bin into the mbed drive from your file explorer
Wait for download to complete
Press the Reset/SW1 button of your FRDM-K64F board to launch the program

Your hyperterminal window should now display Temperature and Humidity measurements (see picture below)!!

main.cpp@0:c12c28a0f9e7, 2014-08-15 (annotated)

Committer:
sam_grove
Date:
Fri Aug 15 20:59:57 2014 +0000
Revision:
0:c12c28a0f9e7
Child:
2:39e8fc849cb1
Initial commit

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
sam_grove 0:c12c28a0f9e7 5 DHT sensor(D4, 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 }