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using MadWizard.WinUSBNet;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace com.clusterrr.FelLib
{
public class Fel
{
USBDevice device = null;
byte inEndp = 0;
byte outEndp = 0;
const int ReadTimeout = 500;
public const int MaxBulkSize = 0x10000;
UInt16 vid, pid;
public static bool DeviceExists(UInt16 vid, UInt16 pid)
{
var fel = new Fel();
try
{
fel.Open(vid, pid);
fel.VerifyDevice();
return true;
}
catch
{
return false;
}
finally
{
fel.Close();
}
}
public void Open(UInt16 vid, UInt16 pid)
{
this.vid = vid;
this.pid = pid;
Close();
device = USBDevice.GetSingleDevice(vid, pid);
if (device == null) throw new Exception("Device not found");
foreach (var pipe in device.Pipes)
{
if (pipe.IsIn)
inEndp = pipe.Address;
else
outEndp = pipe.Address;
}
device.Pipes[outEndp].Policy.PipeTransferTimeout = ReadTimeout;
ClearInputBuffer();
}
public void Close()
{
if (device != null)
{
device.Dispose();
device = null;
}
}
public void ClearInputBuffer()
{
var dummyBuff = new byte[64];
device.Pipes[inEndp].Policy.PipeTransferTimeout = 50;
try
{
while (true) device.Pipes[inEndp].Read(dummyBuff);
}
catch { }
device.Pipes[inEndp].Policy.PipeTransferTimeout = ReadTimeout;
}
private void WriteToUSB(byte[] buffer)
{
device.Pipes[outEndp].Write(buffer);
}
private byte[] ReadFromUSB(UInt32 len)
{
var result = new List<byte>();
while (result.Count < len)
{
var buffer = new byte[len - result.Count];
var l = device.Pipes[inEndp].Read(buffer);
for (int i = 0; i < l && result.Count < len; i++)
result.Add(buffer[i]);
}
return result.ToArray();
}
private void FelWrite(byte[] buffer)
{
var req = new AWUSBRequest();
req.Cmd = AWUSBRequest.RequestType.AW_USB_WRITE;
req.Len = (uint)buffer.Length;
WriteToUSB(req.Data);
WriteToUSB(buffer);
var resp = new AWUSBResponse(ReadFromUSB(13));
if (resp.CswStatus != 0) throw new FelException("FEL write error");
}
private byte[] FelRead(UInt32 len)
{
var req = new AWUSBRequest();
req.Cmd = AWUSBRequest.RequestType.AW_USB_READ;
req.Len = len;
WriteToUSB(req.Data);
var result = ReadFromUSB(len);
var resp = new AWUSBResponse(ReadFromUSB(13));
if (resp.CswStatus != 0) throw new FelException("FEL read error");
return result;
}
private void FelRequest(AWFELStandardRequest.RequestType command)
{
var req = new AWFELStandardRequest();
req.Cmd = command;
FelWrite(req.Data);
}
private void FelRequest(AWFELStandardRequest.RequestType command, UInt32 address, UInt32 length)
{
var req = new AWFELMessage();
req.Cmd = command;
req.Address = address;
req.Len = length;
FelWrite(req.Data);
}
public AWFELVerifyDeviceResponse VerifyDevice()
{
FelRequest(AWFELStandardRequest.RequestType.FEL_VERIFY_DEVICE);
var resp = FelRead(32);
var status = new AWFELStatusResponse(FelRead(8));
return new AWFELVerifyDeviceResponse(resp);
}
public void WriteMemory(UInt32 address, byte[] buffer)
{
int pos = 0;
while (pos < buffer.Length)
{
var buf = new byte[Math.Min(buffer.Length - pos, MaxBulkSize)];
Array.Copy(buffer, pos, buf, 0, buf.Length);
FelRequest(AWFELStandardRequest.RequestType.FEL_DOWNLOAD, (UInt32)(address + pos), (uint)buf.Length);
FelWrite(buf);
var status = new AWFELStatusResponse(FelRead(8));
if (status.State != 0) throw new FelException("FEL write error");
pos += buf.Length;
}
}
public byte[] ReadMemory(UInt32 address, UInt32 length)
{
var result = new List<byte>();
while (length > 0)
{
var l = Math.Min(length, MaxBulkSize);
Console.WriteLine("Reading {0:X8}, size: {1:X8}...", address, l);
FelRequest(AWFELStandardRequest.RequestType.FEL_UPLOAD, address, l);
var r = FelRead((UInt32)l);
result.AddRange(r);
var status = new AWFELStatusResponse(FelRead(8));
if (status.State != 0) throw new FelException("FEL read error");
length -= l;
address += l;
}
return result.ToArray();
}
public void Exec(UInt32 address, int pause = 0)
{
FelRequest(AWFELStandardRequest.RequestType.FEL_RUN, address, 0);
var status = new AWFELStatusResponse(FelRead(8));
if (status.State != 0) throw new FelException("FEL run error");
//Close();
Thread.Sleep(pause * 1000);
//int errorCount = 0;
//while (true)
//{
// try
// {
// Open(vid, pid);
// return;
// }
// catch (Exception ex)
// {
// errorCount++;
// if (errorCount >= 8)
// throw ex;
// }
//}
}
}
}
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