public void AccelerometerProcessorTest()
{
AccelerometerDataAnalysis processor = new AccelerometerDataAnalysis();
for (int i = 0; i < 8000; i++)
{
processor.ProcessData(GenerateData());
}
processor.PerformFFTAnalysis();
Console.WriteLine("X Values:");
Console.WriteLine("\t" + processor.X_Magnitudes);
Console.WriteLine("Y Values:");
Console.WriteLine("\t" + processor.Y_Magnitudes);
Console.WriteLine("Z Values:");
Console.WriteLine("\t" + processor.Z_Magnitudes);
}
public static void ConvertAccelData()
{
string filename = Path.Combine("Data", "Accelerometer.binary");
string fileDir = Path.Combine("Converted", "AccelerometerFreqAnalysis");
Directory.CreateDirectory("Converted");
DateTime initialTime = DateTime.Now;
DateTime currentTime = DateTime.Now;
bool isInitialDateTime = true;
bool writeHeader = true;
int fileCounter = 0; //current files found and navigated
int newFileCounter = 0; //current number of files converted based on fileLineSize
int prevSecond = 0;
int sampleIndex = 0; // initialize to 0 but will increment to 1 right away. Compare using <=, rathter than <
int sps = 7999;
int fileSent = 1;
long index = 1;
long fileLineIndex = 0; //tracks amount of lines in current file
long count = 0; //keep track of records
long indexTracker = 0; //tracks the current index of each line over multiple files
const int fileLineSize = 1000000;
string searchFile = $"{filename}{fileCounter++}";
string resultFile = $"{fileDir}{newFileCounter++}.csv";
StreamWriter sw = File.CreateText(resultFile);
AccelerometerDataAnalysis processor = new AccelerometerDataAnalysis();
TemperatureModel temperature = new TemperatureModel();
//get all accel binary files
while (File.Exists(searchFile))
{
using (FileStream fs = new FileStream(searchFile, FileMode.Open, FileAccess.Read))
{
int accelBytes = 12;
int rtcBytes = 8;
int cpuBytes = 8;
int accelSegmentLength = accelBytes + rtcBytes + cpuBytes;
byte[] bytes = new byte[accelBytes + rtcBytes + cpuBytes];
if (writeHeader)
{
string header = $"ID,Timestamp,Second,Temp (F),SPS{processor.GenerateCsvHeaders()}";
sw.WriteLine(header);
writeHeader = false;
}
while (fs.Read(bytes) != 0)
{
Span <byte> data = bytes;
Span <byte> accelSegment = data.Slice(0, accelBytes);
Span <byte> rtcSegment = data.Slice(accelBytes, rtcBytes);
Span <byte> cpuSegment = data.Slice(accelBytes + rtcBytes, cpuBytes);
currentTime = new DateTime(BitConverter.ToInt64(rtcSegment));
if (isInitialDateTime)
{
prevSecond = currentTime.Second;
initialTime = currentTime;
isInitialDateTime = false;
}
//as long as the seconds match, get the data
if (prevSecond == currentTime.Second && sampleIndex <= sps)
{
//add data for each second
temperature.GetNextAverage(BitConverter.ToDouble(cpuSegment));
processor.ProcessData(accelSegment);
}
else
{
//perform analysis and send message on second change
processor.PerformFFTAnalysis();
//iterate second and append all data. Processor data should already have commas
string csvLine = $"{indexTracker++},{currentTime.ToString("HH:mm:ss")},{(currentTime - initialTime).TotalSeconds.ToString("F3")}," +
$"{(int)temperature.AverageCPUTemp},{processor.SampleSize}{processor.X_Magnitudes}{processor.Y_Magnitudes}{processor.Z_Magnitudes}";
try
{
if (fileLineIndex >= fileLineSize)
{
//generate new csv file
fileLineIndex = 0;
resultFile = $"{fileDir}{newFileCounter++}.csv";
sw.Flush();
sw.Close();
sw.Dispose();
sw = File.CreateText(resultFile);
writeHeader = true;
}
sw.WriteLine(csvLine);
count++;
fileLineIndex++;
}
catch (Exception ex)
{
Console.WriteLine($"Failed to write!\n{ex.Message}\n{ex.StackTrace}");
}
//reset processor and temperature averge and begin new data set here
processor.Reset();
temperature.Reset();
temperature.GetNextAverage(BitConverter.ToDouble(cpuSegment));
processor.ProcessData(accelSegment);
sampleIndex = 1; //start at one since we already have added our next first datapoint
}
prevSecond = currentTime.Second;
data.Clear(); // since we are reusing this array, clear the values for integrity
}
Console.WriteLine($"Finished writing file #{fileSent++} at {indexTracker} total lines transmitted!");
}
sw.Flush();
searchFile = $"{filename}{fileCounter++}";
}
sw.Dispose();
using (var writer = LogFile.AppendText())
{
writer.WriteLine("-------------------------------------------------------------------------------");
writer.WriteLine($"{DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss")} - Accelerometer Frequency Analysis Records converted: {count}");
writer.WriteLine($"{DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss")} - Accelerometer Frequency Analysis Files found: {fileCounter}");
writer.WriteLine($"{DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss")} - Accelerometer Frequency Analysis Converted Files created: {newFileCounter}");
writer.WriteLine($"{DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss")} - Accelerometer Frequency Analysis TotalSeconds: {(currentTime - initialTime).TotalSeconds.ToString("F3")}");
writer.WriteLine();
}
}
