public static IntelHex Parse(string line)
{
try
{
if (string.IsNullOrWhiteSpace(line))
{
return(null);
}
line = line.Trim();
if (line[0] != ':')
{
throw new AssembleException("需要以“:”作为起始");
}
List <byte> bytes = new List <byte>();
for (int i = 1; i < line.Length; i += 2)
{
bytes.Add(Convert.ToByte(line.Substring(i, 2), 16));
}
IntelHex hex = new IntelHex();
int index = 0;
hex.DataSize = bytes[index++];
hex.StartAddress = (ushort)(bytes[index++] << 8);
hex.StartAddress = (ushort)(hex.StartAddress | bytes[index++]);
hex.RecordType = bytes[index++];
hex.Data = bytes.GetRange(index, hex.DataSize).ToArray();
index += hex.DataSize;
hex.Checksum = bytes[index++];
if (index != bytes.Count)
{
throw new AssembleException("数据过多");
}
return(hex);
}
catch (IndexOutOfRangeException)
{
throw new AssembleException("数据过少");
}
}
public static string WriteHex(string hexStr, byte[] asmBytes, Board board)
{
if (asmBytes.Length > board.DataSize)
{
throw new AssembleException("烧录失败！字节超出限制");
}
List <byte> list = new List <byte>(asmBytes);
// load hex file
var lines = hexStr.Split('\r', '\n');
List <IntelHex> hexFile = new List <IntelHex>();
foreach (var line in lines)
{
try
{
var hex = IntelHex.Parse(line);
if (hex != null)
{
hexFile.Add(hex);
}
}
catch (AssembleException ex)
{
throw new AssembleException("固件读取失败！" + ex.Message);
}
}
// find data position
int index = hexFile.FindIndex(hex =>
{
if (hex.Data.Length < 0x10)
{
return(false);
}
for (int i = 0; i < hex.Data.Length; i++)
{
if (i < 2 && hex.Data[i] != 0xFF || i > 2 && hex.Data[i] != 0)
{
return(false);
}
}
return(true);
});
if (index == -1)
{
throw new AssembleException("固件读取失败！未找到数据结构");
}
int ver = hexFile[index].Data[2];
if (ver < board.Version)
{
throw new AssembleException("固件版本不符，请使用最新版的固件");
}
// write data from asmBytes
for (int i = 0; i < list.Count;)
{
int len = Math.Min(hexFile[index].DataSize, list.Count - i);
byte[] data = hexFile[index].Data.ToArray();
list.CopyTo(i, data, 0, len);
hexFile[index].WriteData(data);
i += len;
index++;
}
// get string
var str = new StringBuilder();
foreach (var hex in hexFile)
{
str.AppendLine(hex.ToString());
}
return(str.ToString());
}
