/// <summary>
/// Send the buffer to the drawing mode buffer, then get the buffer back raw
/// </summary>
/// <param name="buffer"></param>
/// <returns></returns>
private byte[] RoundTripBuffer(byte[] buffer, HypnoLsdController device)
{
var mode = device.Drawing;
if (mode)
{
device.Drawing = false; // exit to ensure at start of drawing buffer
}
Thread.Sleep(500); // give some time for above messages to return
device.Drawing = true;
Thread.Sleep(500); // give some time for above messages to return
device.WriteBytes(buffer);
Thread.Sleep(500); // give some time for above messages to return
device.Drawing = false;
Thread.Sleep(1000); // give some time for above messages to return
device.MessageReceived += ByteListener;
// get the buffer back
recordedBytes = new ConcurrentQueue <byte>();
var start = new Stopwatch();
start.Start();
var lastSize = 0;
var testLength = Math.Min(buffer.Length, device.RamSize);
device.DumpRam((ushort)testLength);
// read until timeout
while (true)
{
if (start.ElapsedMilliseconds > 1000)
{
break;
}
if (lastSize != recordedBytes.Count)
{
// new data, reset timeout
start.Restart();
lastSize = recordedBytes.Count;
}
}
device.MessageReceived -= ByteListener;
Thread.Sleep(500);
var answer = recordedBytes.ToArray();
// clean message - remove final "OK\r\n"and initial message up to byte '\n' = 0x0A
if (answer.Length > 0)
{
answer = answer.SkipWhile(b => b != '\n').Skip(1).Take(testLength).ToArray();
}
device.Drawing = mode;
Thread.Sleep(500);
return(answer);
}
internal void PutFile(HypnoLsdController device, string filename)
{
// read records until no more
// a record is 128 bytes,
// 1st byte is length N (0-126) of data bytes
// then N data bytes (pad with 0 after N)
// 128th byte is sum of bytes (checksum)
// length 0 record with all 0 entries and 255 sum is end
// after each record read correctly, returns 2 bytes: next record count mod 256 (0 based) and the checksum byte obtained
// if record failed, resend with current record count mode 256 (asking for resend) and bit-inverted checksum byte
var data = File.ReadAllBytes(filename);
var block = new byte[128];
var pos = 0; // position of data to send
device.WriteString("putfile \"" + Path.GetFileName(filename) + "\"\r\n");
Thread.Sleep(10);
var len = 0;
do
{
len = data.Length - pos;
if (len > 126)
{
len = 126;
}
block[0] = (byte)len;
var checksum = 0;
for (var i = 0; i < len; ++i)
{
block[i + 1] = data[pos++];
checksum += block[i + 1];
}
// 0 fill
for (var i = len; i < 126; i++)
{
block[i + 1] = 0;
}
block[127] = (byte)checksum;
// send 4 bytes at a time, with delays
var temp = new byte[4];
for (var i = 0; i < block.Length; i += 4)
{
for (var j = 0; j < 4; ++j)
{
temp[j] = block[j + i];
}
device.WriteBytes(temp);
Thread.Sleep(1);
}
//device.WriteBytes(block);
} while (len != 0);
}
