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Software/Cpp/grove_sound_sensor.cpp Normal file
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//
// GrovePi Example for using the Grove Sound Sensor and the Grove LED
//
// The GrovePi connects the Raspberry Pi and Grove sensors. You can learn more about GrovePi here: http://www.dexterindustries.com/GrovePi
//
// Modules:
// http://www.seeedstudio.com/wiki/Grove_-_Sound_Sensor
// http://www.seeedstudio.com/wiki/Grove_-_LED_Socket_Kit
//
// 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"
using namespace GrovePi;
// sudo g++ -Wall grovepi.cpp grove_sound_sensor.cpp -o grove_sound_sensor.out -> without grovepicpp package installed
// sudo g++ -Wall -lgrovepicpp grove_sound_sensor.cpp -o grove_sound_sensor.out -> with grovepicpp package installed
int main()
{
int sound_sensor_pin = 0; // analog port A0 for the Grove Sound Sensor
int LED_pin = 5; // digital port D5 for the Grove LED
int threshold_value = 400; // threshold value for the sound levels (values from 0 -> 1023)
int sensor_value; // variable to hold the Sound Sensor's value
try
{
// initialize communication with the GrovePi
initGrovePi();
// set the LED & Sound pins accordingly
pinMode(sound_sensor_pin, INPUT);
pinMode(LED_pin, OUTPUT);
// do this indefinitely
while(true)
{
// read the value on the sound sensor
sensor_value = analogRead(sound_sensor_pin);
// check whether we turn the LED ON or OFF
// based on the threshold value
// and print the sensor value onto the terminal
printf("[pin %d][sensor value = %d]", sound_sensor_pin, sensor_value);
if(sensor_value > threshold_value)
{
digitalWrite(LED_pin, HIGH);
printf("[led ON]\n");
}
else
{
digitalWrite(LED_pin, LOW);
printf("[led OFF]\n");
}
// and wait 200 ms for the next reading
delay(200);
sensor_value = analogRead(sound_sensor_pin);
}
}
catch(I2CError &error)
{
printf(error.detail());
return -1;
}
return 0;
}