89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
//
|
|
// GrovePi Example for using the Grove Temperature & Humidity Sensor Pro
|
|
// (http://www.seeedstudio.com/wiki/Grove_-_Temperature_and_Humidity_Sensor_Pro)
|
|
//
|
|
// The GrovePi connects the Raspberry Pi and Grove sensors.
|
|
// You can learn more about GrovePi here: http://www.dexterindustries.com/GrovePi
|
|
//
|
|
// Have a question about this example? Ask on the forums here: http://forum.dexterindustries.com/c/grovepi
|
|
//
|
|
/*
|
|
## License
|
|
|
|
The MIT License (MIT)
|
|
|
|
GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
|
|
Copyright (C) 2017 Dexter Industries
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
*/
|
|
|
|
#include "grovepi.h"
|
|
#include "grove_dht_pro.h"
|
|
|
|
using GrovePi::DHT;
|
|
using GrovePi::delay;
|
|
using GrovePi::I2CError;
|
|
|
|
// sudo g++ -Wall grovepi.cpp grove_dht_pro.cpp grove_dht_example.cpp -o grove_dht_example.out -> without grovepicpp package installed
|
|
// sudo g++ -Wall -lgrovepicpp grove_dht_pro.cpp grove_dht_example.cpp -o grove_dht_example.out -> with grovepicpp package installed
|
|
|
|
int main()
|
|
{
|
|
int sensorPin = 4; // digital port (D4) to which we have DTH serial sensor connected
|
|
float temp = 0, humidity = 0; // variables to hold data from the DHT sensor
|
|
|
|
// initialize the BLUE module (got from the GrovePi kit)
|
|
// and use digital port 4 for the DHT sensor
|
|
DHT dht = DHT(DHT::BLUE_MODULE, sensorPin);
|
|
|
|
try
|
|
{
|
|
dht.init(); // same as initGrovePi
|
|
|
|
// do this indefinitely
|
|
while(true)
|
|
{
|
|
// read the DHT sensor values
|
|
dht.getSafeData(temp, humidity);
|
|
|
|
// and print them on the screen
|
|
printf("[temp = %.02f C][humidity = %.02f%%]\n", temp, humidity);
|
|
|
|
// and wait 100 before the other reading
|
|
// so we don't overflow the terminal
|
|
delay(100);
|
|
}
|
|
}
|
|
catch(I2CError &error)
|
|
{
|
|
// I2C error while reading / writing
|
|
printf(error.detail());
|
|
return -1;
|
|
}
|
|
catch(std::runtime_error &e)
|
|
{
|
|
// catch error on number values
|
|
// NaN & bad value readings
|
|
printf(e.what());
|
|
return -2;
|
|
}
|
|
|
|
return 0;
|
|
}
|