Development v12

Warning - Product Update

All the resources present on this section belong to Waspmote v12, Waspmote Plug & Sense! v12 and Meshlium v3.8.

If you have a Waspmote v15, Waspmote Plug & Sense! v15 or Meshlium v4.0 please go to the new Development Section.

Check what is your version and what are the differences between the old and the new one in this document.

» GP 18: Particle Matter Sensor

This is the basic code to manage and read the particle sensor.

Required Materials

1 x Waspmote
1 x Battery
1 x Gases PRO board
1 x Particle matter sensor

Notes

- Remember to connect the battery to Waspmote for proper operation.
- The connection of the sensor is described in the Gases PRO technical guide.
- Cycle time: 5 minutes
- This example can only be executed in Waspmote v12

Code

/*  
 *  ------------  [GP_18] - Particle Matter Sensor  -------------- 
 *  
 *  Explanation: This is the basic code to manage and read the particle
 *  sensor. 
 *  
 *  Copyright (C) 2015 Libelium Comunicaciones Distribuidas S.L. 
 *  http://www.libelium.com 
 *  
 *  This program is free software: you can redistribute it and/or modify  
 *  it under the terms of the GNU General Public License as published by  
 *  the Free Software Foundation, either version 3 of the License, or  
 *  (at your option) any later version.  
 *   
 *  This program is distributed in the hope that it will be useful,  
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of  
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  
 *  GNU General Public License for more details.  
 *   
 *  You should have received a copy of the GNU General Public License  
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.  
 * 
 *  Version:           0.3
 *  Design:            David Gascón 
 *  Implementation:    Alejandro Gállego
 */

#include <WaspOPC_N2.h>
#include <WaspFrame.h>

/*
 * P&S! Possibilities for this sensor:
 * 	- SOCKET_D
 */

char info_string[61];
int status;
int measure;

char node_ID[] = "Particle_sensor";

void setup()
{
    USB.println(F("Particle Matter Sensor example"));
    // Set the Waspmote ID
    frame.setID(node_ID);

    status = OPC_N2.ON();
    if (status == 1)
    {
        status = OPC_N2.getInfoString(info_string);
        if (status == 1)
        {
            USB.println(F("Information string extracted:"));
            USB.println(info_string);

        }
        else
        {
            USB.println(F("Error reading the particle sensor"));
        }

        OPC_N2.OFF();
    }
    else
    {
        USB.println(F("Error starting the particle sensor"));
    }
}	


void loop()
{
    ///////////////////////////////////////////
    // 1. Turn on the sensors
    /////////////////////////////////////////// 

    // Power on the OPC_N2 sensor. 
    // If the gases PRO board is off, turn it on automatically.
    status = OPC_N2.ON();
    if (status == 1)
    {
        USB.println(F("Particle sensor started"));

    }
    else
    {
        USB.println(F("Error starting the particle sensor"));
    }

    ///////////////////////////////////////////
    // 2. Read sensors
    ///////////////////////////////////////////  

    if (status == 1)
    {
        // Power the fan and the laser and perform a measure of 5 seconds
        measure = OPC_N2.getPM(5000);
        if (measure == 1)
        {
            USB.println(F("Measure performed"));
            USB.print(F("PM 1: "));
            USB.print(OPC_N2._PM1);
            USB.println(F(" ug/m3"));
            USB.print(F("PM 2.5: "));
            USB.print(OPC_N2._PM2_5);
            USB.println(F(" ug/m3"));
            USB.print(F("PM 10: "));
            USB.print(OPC_N2._PM10);
            USB.println(F(" ug/m3"));

        }
        else
        {
            USB.print(F("Error performing the measure. Error code:"));
            USB.println(measure, DEC);
        }
    }


    ///////////////////////////////////////////
    // 3. Turn off the sensors
    /////////////////////////////////////////// 

    // Power off the OPC_N2 sensor. If there aren't other sensors powered, 
    // turn off the board automatically
    OPC_N2.OFF();


    ///////////////////////////////////////////
    // 4. Create ASCII frame
    /////////////////////////////////////////// 

    // Create new frame (ASCII)
    frame.createFrame(ASCII);

    // Add PM 1
    frame.addSensor(SENSOR_OPC_PM1,OPC_N2._PM1); 
    // Add PM 2.5
    frame.addSensor(SENSOR_OPC_PM2_5,OPC_N2._PM2_5); 
    // Add PM 10
    frame.addSensor(SENSOR_OPC_PM10,OPC_N2._PM10); 

    // Show the frame
    frame.showFrame();


    ///////////////////////////////////////////
    // 5. Sleep
    /////////////////////////////////////////// 

    // Go to deepsleep	
    // After 3 minutes, Waspmote wakes up thanks to the RTC Alarm
    PWR.deepSleep("00:00:03:00", RTC_OFFSET, RTC_ALM1_MODE1, ALL_OFF);

}

Output

E#
Particle Matter Sensor example
Particle sensor started
Measure performed
PM 1: 0.1250 ug/m3
PM 2.5: 0.2380 ug/m3
PM 10: 1.3500 ug/m3
===============================
Current ASCII Frame:
Length: 70
Frame Type: 128
frame (HEX): 3C3D3E800323333832353337333638235061727469636C655F73656E736F72233023504D313A302E3132353023504D325F353A302E3233383023504D31303A312E3335303023
frame (STR): <=>€#382537368#Particle_sensor#0#PM1:0.1250#PM2_5:0.2380#PM10:1.3500#
===============================
===============================
Particle Matter Sensor example
Particle sensor started
Measure performed
PM 1: 0.1250 ug/m3
PM 2.5: 0.2380 ug/m3
PM 10: 1.3500 ug/m3
Current ASCII Frame:
Length: 70
Frame Type: 128
frame (HEX): 3C3D3E800323333832353337333638235061727469636C655F73656E736F72233123504D313A302E3234303023504D325F353A302E3235333023504D31303A312E3836343023
frame (STR): <=>€#382537368#Particle_sensor#1#PM1:0.2400#PM2_5:0.2530#PM10:1.8640#
===============================

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