public void Start(string file)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
if (!CanStart)
{
throw new InvalidOperationException("Drone not ready for OTA");
}
Started = true;
Done = false;
Position = 0;
data = File.ReadAllBytes(file);
using (var md5 = MD5.Create())
{
Hash = BitConverter.ToString(md5.ComputeHash(data)).Replace("-", "").ToLower();
}
Drone.SendPacket(new PacketBeginOTA(Hash, (uint)Size), true, (s, p) =>
{
if (IsRunning)
{
SendData();
}
else
{
Drone.OnDataChange += Drone_OnDataChange;
}
});
}
private void SendData()
{
if (!IsRunning)
{
Started = false;
Done = false;
return;
}
OnProgress?.Invoke(this, EventArgs.Empty);
int chunkSize = Math.Min(256, Size - Position);
byte[] chunk = new byte[chunkSize];
Array.Copy(data, Position, chunk, 0, chunkSize);
byte hash = 0;
foreach (byte b in chunk)
{
hash ^= b;
}
Drone.SendPacket(new PacketDataOTA(chunkSize, hash, chunk), true, (s, p) =>
{
Position += chunkSize;
if (Position >= Size)
{
Drone.SendPacket(new PacketEndOTA(false), true);
Done = true;
return;
}
SendData();
});
}
public void Abort()
{
if (!IsRunning)
{
throw new InvalidOperationException("OTA not running");
}
Done = false;
Started = false;
Drone.SendPacket(new PacketEndOTA(true), false);
Drone.OnDataChange -= Drone_OnDataChange;
}
