mirror of
https://github.com/eclipse/upm.git
synced 2025-03-14 20:47:30 +03:00
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/*
|
|
* Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
|
|
* Copyright (c) 2014 Intel Corporation.
|
|
*
|
|
* This program and the accompanying materials are made available under the
|
|
* terms of the The MIT License which is available at
|
|
* https://opensource.org/licenses/MIT.
|
|
*
|
|
* SPDX-License-Identifier: MIT
|
|
*/
|
|
|
|
#include <iostream>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <string>
|
|
|
|
#include "tp401.hpp"
|
|
#include "upm_utilities.h"
|
|
|
|
using namespace std;
|
|
|
|
//! [Interesting]
|
|
// Give a qualitative meaning to the value from the sensor
|
|
std::string
|
|
airQuality(uint16_t value)
|
|
{
|
|
if (value < 50)
|
|
return "Fresh Air";
|
|
if (value < 200)
|
|
return "Normal Indoor Air";
|
|
if (value < 400)
|
|
return "Low Pollution";
|
|
if (value < 600)
|
|
return "High Pollution - Action Recommended";
|
|
return "Very High Pollution - Take Action Immediately";
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
upm::TP401 airSensor(0);
|
|
|
|
cout << airSensor.name() << endl;
|
|
|
|
fprintf(stdout, "Heating sensor for 3 minutes...\n");
|
|
// wait 3 minutes for sensor to warm up
|
|
for (int i = 0; i < 3; i++) {
|
|
if (i) {
|
|
fprintf(stdout, "Please wait, %d minute(s) passed..\n", i);
|
|
}
|
|
upm_delay(60);
|
|
}
|
|
fprintf(stdout, "Sensor ready!\n");
|
|
|
|
while (true) {
|
|
uint16_t value = airSensor.getSample(); // Read raw value
|
|
float ppm = airSensor.getPPM(); // Read CO ppm (can vary slightly from previous read)
|
|
fprintf(stdout, "raw: %4d ppm: %5.2f %s\n", value, ppm, airQuality(value).c_str());
|
|
upm_delay_us(2500000); // Sleep for 2.5s
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
//! [Interesting]
|