Fun with String parsing à la ref

void Main()
{
    var response = "B01 S01 D30 S02 D127 P01 D1 B02 S01 DScott\\ Morris S02 D145 P01 D0";

    var boards = new List<Board>();
    var board = (Board)null;

    for (int i = 0; i < response.Length; i++)
    {
        if (response[i] == 'B')
        {
            board = new Board()
            {
                Address = int.Parse(ParseValue(response, ref i))
            };
            boards.Add(board);
        }
        else if(response[i] == 'S' && board != null)
        {
            var sensor = new Sensor()
            {
                Address = int.Parse(ParseValue(response, ref i)),
                Data = (response[++i] == 'D') ? ParseValue(response, ref i) : null
            };

            if(sensor.Data == null) // Correct the position of i for the next value not being data
                i--;

            if (board.Sensors == null)
                board.Sensors = new List<Sensor>();
            board.Sensors.Add(sensor);
        }
        else if(response[i] == 'P' && board != null)
        {
            var peripheral = new Peripheral()
            {
                Address = int.Parse(ParseValue(response, ref i)),
                Data = (response[++i] == 'D') ? ParseValue(response, ref i) : null
            };
            if(peripheral.Data == null) // Correct the position of i for the next value not being data
                i--;

            if (board.Peripherals == null)
                board.Peripherals = new List<Peripheral>();

            board.Peripherals.Add(peripheral);
        }
    }

    boards.Dump();
}

public string ParseValue(string response, ref int i) {
    var dataString = string.Empty;
    for (int y = i + 1; y < response.Length; y++)
    {
        if(response[y] == '\\')
            y++;
        //Might have issues with parsing at the beinging (y-1 <= 0).
        if (response[y-1] != '\\' && response[y] == ' ')
        {
            i = y;
            break;
        }
        dataString += response[y];
    }

    return dataString;
}

// Define other methods and classes here
public class Board
{
    public int Address { get; set; }
    public List<Sensor> Sensors { get; set;}
    public List<Peripheral> Peripherals { get; set; }
}

public abstract class Component
{
    public int Address { get; set; }
    public string Data { get; set; }
}

public class Sensor : Component {}

public class Peripheral : Component {}

/*
Pared Output

|Address    |Sensors                     |Peripherals        |
|       1   ||Address   |Data           |||Address  |Data   ||
|           ||      1   |   30          |||     1   |   1   ||
|           ||      2   |   127         ||                   |
|------------------------------------------------------------|
|       2   ||Address   |Data           |||Address  |Data    |
|           ||      1   |Scott Morris   |||     1   |   0   ||
|           ||      2   |145            ||                   |
|------------------------------------------------------------|
*/