Zeus

Hello,

I am trying to write some sensor data on SD card in a csv file.
But in the file I don't see all collected values, rather the last (just one set of three values).
Please correct.

using System;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.Hardware;
using SecretLabs.NETMF.Hardware.NetduinoPlus;
using System.IO;
using System.Text;

namespace Integration
{
    public class Program
    {
        private const int MaximumValue = 1023;
        private const int AnalogReference = 5;

        public static void Main()
        {
            AnalogInput no2Sensor = new AnalogInput(Pins.GPIO_PIN_A1);
            AnalogInput coSensor = new AnalogInput(Pins.GPIO_PIN_A2);
            AnalogInput o3Sensor = new AnalogInput(Pins.GPIO_PIN_A3);

            while (true)
            {
                int digitalValue1 = no2Sensor.Read();
                float analogValue1 = (float)digitalValue1 / MaximumValue * AnalogReference;

                int digitalValue2 = coSensor.Read();
                float analogValue2 = (float)digitalValue2 / MaximumValue * AnalogReference;

                int digitalValue3 = o3Sensor.Read();
                float analogValue3 = (float)digitalValue3 / MaximumValue * AnalogReference;
                Debug.Print("NO2 value:\t" + analogValue1.ToString() + "\nCO Value:\t" + analogValue2.ToString() + "\nO3 Value:\t" + analogValue3.ToString());

                using (StreamWriter sw = new StreamWriter(@"SD\file.csv"))
                {
                    sw.Write(analogValue1.ToString() + "," + analogValue2.ToString() + "," + analogValue3.ToString());
                    sw.Write("\n");
                    sw.Flush();
                    sw.Close();
                }

                Thread.Sleep(1000);
            }

            
        }

    }
}

Thanks.

Regards,

Z

Hello guys,
I am new to Netduino, though I recently bought Netduino Plus.
I am trying to build a small project where I need to log some analog sensor data and date-time in a csv file on SD card.
Here is a small code which I wrote for CO sensor.

using System;
using System.Threading;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.Hardware;
using SecretLabs.NETMF.Hardware.Netduino;
using System.IO;
using Ethernet.Data;


namespace co
{
    public class Program
    {
        public static void Main()
        {
            // write your code here
            AnalogInput coSensor = new AnalogInput(Pins.GPIO_PIN_A0);
            coSensor.SetRange(0, 1024);
            while (true)
            {
                Debug.Print(coSensor.Read().ToString());
            Thread.Sleep(1000);
        }

        }

    }
}

Please help me log it on SD card.

Thanks.

Z