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portBooter.cs
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portBooter.cs
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) Microsoft Corporation. All rights reserved.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
using System;
using System.Collections;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Reflection;
using System.Threading;
using System.Runtime.Serialization;
namespace Microsoft.SPOT.Debugger
{
public class PortBooter
{
public delegate void ProgressEventHandler( SRecordFile.Block bl, int offset, bool fLast );
public class Report
{
public enum State
{
Banner ,
EntryPoint,
ACK ,
NACK ,
CRC ,
Noise ,
}
public State type;
public uint address;
public string line;
}
private Engine m_eng;
private event ProgressEventHandler m_eventProgress;
private ArrayList m_reports = new ArrayList();
private AutoResetEvent m_ready = new AutoResetEvent( false );
private byte[] m_buffer = new byte[1024];
private int m_pos = 0;
private byte m_lastEOL = 0;
private Regex m_re_Banner1 = new Regex( "PortBooter v[0-9]+\\.[0-9]+", RegexOptions.None );
private Regex m_re_Banner2 = new Regex( "Waiting .* for hex upload" , RegexOptions.IgnoreCase );
private Regex m_re_EntryPoint = new Regex( "X start ([0-9a-fA-F]*)" , RegexOptions.IgnoreCase );
private Regex m_re_ACK = new Regex( "X ack ([0-9a-fA-F]*)" , RegexOptions.IgnoreCase );
private Regex m_re_NACK = new Regex( "X nack ([0-9a-fA-F]*)" , RegexOptions.IgnoreCase );
private Regex m_re_CRC = new Regex( "X crc ([0-9a-fA-F]*)" , RegexOptions.IgnoreCase );
public PortBooter( Engine eng )
{
m_eng = eng;
}
public void Dispose()
{
Stop();
}
#if PortBooter_RAWDUMP
Stream m_stream;
#endif
public void Start()
{
#if PortBooter_RAWDUMP
m_stream = new FileStream( @"RawDump.bin", FileMode.Create );
#endif
m_eng.WaitForPort();
m_eng.ConfigureXonXoff( true );
m_eng.OnNoise += new NoiseEventHandler( this.Process );
}
public void Stop()
{
m_eng.OnNoise -= new NoiseEventHandler( this.Process );
m_eng.ConfigureXonXoff( false );
#if PortBooter_RAWDUMP
if(m_stream != null)
{
m_stream.Flush();
m_stream.Close();
}
#endif
}
public event ProgressEventHandler OnProgress
{
add
{
m_eventProgress += value;
}
remove
{
m_eventProgress -= value;
}
}
private void Process( byte[] buf, int offset, int count )
{
#if PortBooter_RAWDUMP
if(m_stream != null)
{
m_stream.Write( buf, offset, count );
m_stream.Flush();
}
#endif
while(count-- > 0)
{
byte c = buf[offset++];
m_buffer[m_pos] = c;
if(c == '\n' || c == '\r')
{
if(m_pos == 0)
{
if(m_lastEOL == '\r' && c == '\n')
{
m_lastEOL = c;
continue;
}
}
m_lastEOL = c;
string line = Encoding.UTF8.GetString( m_buffer, 0, m_pos );
Report r = null;
if(m_re_Banner1.IsMatch( line ) || m_re_Banner2.IsMatch( line ))
{
r = new Report();
r.type = Report.State.Banner;
}
else if(m_re_EntryPoint.IsMatch( line ))
{
GroupCollection group = m_re_EntryPoint.Match( line ).Groups;
r = new Report();
r.type = Report.State.EntryPoint;
r.address = UInt32.Parse( group[1].Value, System.Globalization.NumberStyles.HexNumber );
}
else if(m_re_ACK.IsMatch( line ))
{
GroupCollection group = m_re_ACK.Match( line ).Groups;
r = new Report();
r.type = Report.State.ACK;
r.address = UInt32.Parse( group[1].Value, System.Globalization.NumberStyles.HexNumber );
}
else if(m_re_NACK.IsMatch( line ))
{
GroupCollection group = m_re_NACK.Match( line ).Groups;
r = new Report();
r.type = Report.State.NACK;
r.address = UInt32.Parse( group[1].Value, System.Globalization.NumberStyles.HexNumber );
}
else if(m_re_CRC.IsMatch( line ))
{
GroupCollection group = m_re_CRC.Match( line ).Groups;
r = new Report();
r.type = Report.State.CRC;
r.address = UInt32.Parse( group[1].Value, System.Globalization.NumberStyles.HexNumber );
}
else
{
r = new Report();
r.type = Report.State.Noise;
r.line = line;
}
if(r != null)
{
lock(m_reports)
{
m_reports.Add( r );
m_ready.Set();
}
}
m_pos = 0;
}
else if(++m_pos == m_buffer.Length)
{
m_pos = 0;
}
}
}
public bool WaitBanner( int tries, int timeout )
{
while(tries > 0)
{
Report r = GetReport( timeout );
if(r == null)
{
m_eng.InjectMessage( "Synching...\r\n" );
}
else if(r.type == Report.State.Noise)
{
m_eng.InjectMessage( "{0}", r.line );
}
else if(r.type == Report.State.Banner)
{
for(int i=0; i<10; i++)
{
SendString( "ZENFLASH\r\n" );
Thread.Sleep( 20 );
}
return true;
}
}
return false;
}
public bool Program( ArrayList blocks )
{
ProgressEventHandler eventProgress = m_eventProgress;
const int maxpipeline = 4;
const int pipelineSize = 128;
int[] outstanding = new int[maxpipeline];
for(int i=0; i<maxpipeline; i++)
{
outstanding[i] = -1;
}
foreach(SRecordFile.Block bl in blocks)
{
byte[] buf = bl.data.ToArray();
uint address = bl.address;
int offset = 0;
int count = buf.Length;
int pipeline = maxpipeline;
while(offset < count)
{
int pending = 0;
for(int i=0; i<pipeline; i++)
{
if(outstanding[i] == -1)
{
int pos = offset + i * pipelineSize;
int len = System.Math.Min( count - pos, pipelineSize );
if(len <= 0) break;
WriteMemory( (uint)(address + pos), buf, pos, len );
outstanding[i] = i;
}
pending++;
}
if(pending == 0) break;
Report r = GetReport( 5000 );
if(r == null)
{
for(int i=0; i<pipeline; i++)
{
outstanding[i] = -1;
}
}
else if(r.type == Report.State.Noise)
{
m_eng.InjectMessage( "{0}", r.line );
}
else if(r.type == Report.State.CRC)
{
int restart = 0;
for(int i=0; i<pipeline; i++)
{
if(r.address == address + offset + i * pipelineSize)
{
restart = i;
break;
}
}
int pos = outstanding[restart];
for(int i=restart; i<pipeline; i++)
{
outstanding[i] = -1;
}
//
// Throttle back pipelining in case of errors.
//
if(pipeline > pos+1 && pipeline > 1)
{
pipeline--;
}
}
else if(r.address == address + offset)
{
if(r.type == Report.State.ACK)
{
offset += pipelineSize;
for(int i=1; i<pipeline; i++)
{
outstanding[i-1] = outstanding[i];
}
outstanding[pipeline-1] = -1;
if(eventProgress != null) eventProgress( bl, System.Math.Min( count, offset ), false );
}
else if(r.type == Report.State.NACK)
{
}
}
}
if(eventProgress != null) eventProgress( bl, count, true );
}
return true;
}
public Report GetReport( int timeout )
{
while(true)
{
lock(m_reports)
{
if(m_reports.Count > 0)
{
Report r = (Report)m_reports[0]; m_reports.RemoveAt( 0 );
return r;
}
}
if(timeout <= 0) return null;
DateTime start = DateTime.Now;
m_ready.WaitOne( timeout, false );
TimeSpan diff = DateTime.Now - start;
timeout -= (int)diff.TotalMilliseconds;
}
}
public void SendString( string s )
{
SendBuffer( Encoding.UTF8.GetBytes( s ) );
}
public void Execute( uint address )
{
WriteMemory( address, null, 0, 0 );
}
public void WriteMemory( uint address, byte[] data, int offset, int count )
{
MemoryStream stream = new MemoryStream();
BinaryWriter writer = new BinaryWriter( stream, Encoding.Unicode );
uint crc = 0;
crc -= address;
crc -= (ushort)count;
for(int i=0; i<count; i++)
{
crc -= data[offset+i];
}
writer.Write( (byte )'X' );
writer.Write( (uint )address );
writer.Write( (ushort)count );
writer.Write( (uint )crc );
if(count > 0)
{
writer.Write( data, offset, count );
}
writer.Flush();
SendBuffer( stream.ToArray() );
}
void SendBuffer( byte[] buf )
{
m_eng.SendRawBuffer( buf );
}
}
}