/// <summary>
/// Reads product information from a file.
/// </summary>
/// <param name="path">Path to product file.</param>
/// <param name="mask">The device mask to set.</param>
/// <param name="state">The device states for the masked devices.</param>
/// <remarks>
/// The file should be a text file with seperate lines containing the product Id and the version.
/// The lines should be space seperated key value pairs as below.
/// PRODUCT_ID 2
/// VERSION 4
/// </remarks>
public static CANFrame PopulateProductFrameFromFile(string path, DeviceCatalogueInfo.EquipmentFlages mask, DeviceCatalogueInfo.EquipmentFlages state)
{
byte prodId;
byte ver;
ProductInfoFromFile(path, out prodId, out ver);
CANFrame frame = CNXCANMsgHelper.PackProductId(prodId, ver, (uint)mask, (uint)state);
CNXLog.WarnFormat("Product Frame {0}", frame.ToString());
return(frame);
}
private CANFrame BuildQueryResponce()
{
byte[] data;
CANFrame frame = new CANFrame();
try
{
frame.MailboxId = 0x500 + (uint)mBlockId;
// decide what the offset value should be
uint offset = mLastIndexWritten;
ushort crc = 0;
// no active or downloading block
if (mLastIndexWritten == 0 && mCRC == 0)
{
offset = 0;
}
else if (BlockStatus == BlockState.COMPLETE)
{
offset = 0xffffffff;
crc = mCRC;
}
data = new byte[7];
// populate the offset
BitConverter.GetBytes(offset).CopyTo(data, 0);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(data, 0, 4);
}
// populate the crc
BitConverter.GetBytes(crc).CopyTo(data, 4);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(data, 4, 2);
}
// populate the current version
data[6] = mProdVersion;
frame.Data = data;
CNXLog.InfoFormat("BuildQueryResponce {0} {1}", BlockStatus, frame.ToString());
}
catch (Exception e)
{
CNXLog.ErrorFormat("BuildQueryResponce {0} {1}", (Block)mBlockId, e.ToString());
}
return(frame);
}
/// <summary>
/// Processes the CAN frame and writes any valid data to the block.
/// </summary>
/// <param name="frame">
/// Block frame.
/// If the frame was a block query the responce is provided.
/// Where no responce is required the frame mailbox will be set to 0.
/// </param>
/// <returns>The lowest complete data offset.</returns>
public uint ProcessChunk(CANFrame frame)
{
if (mBlockId != (byte)(frame.MailboxId & 0xff))
{
return(0);
}
try
{
// make sure we have a file
if (mMemStream == null)
{
CreateMemoryStream();
}
if (mMemStream == null)
{
return(0);
}
// save the current state
BlockState state = BlockStatus;
// process block type
switch (frame.MailboxId & 0xf00)
{
// Chunk 1
case 0x600:
lock (mBlockLock)
{
ProcessChunk1(frame.Data);
}
break;
// Chunk N
case 0x700:
BlockState newState = state;
lock (mBlockLock)
{
ProcessChunkN(frame.Data);
newState = BlockStatus;
}
if (newState != state)
{
OnRaiseBlockStatusEvent(new BlockStatusEventArgs(mBlockId, newState));
}
break;
// Block Query
case 0x400:
SendBlockQueryResponce();
break;
default:
break;
}
//BlockState newState = BlockStatus;
//if (newState != state)
// OnRaiseBlockStatusEvent(new BlockStatusEventArgs(newState));
}
catch (Exception e)
{
CNXLog.ErrorFormat("ProcessChunk frame {0} failed {1}.", frame.ToString(), e.ToString());
}
return(mLastIndexWritten);
}
public override string ToString()
{
return(mCatalogueFrame.ToString());
}
