public int write_flash(long addr, Flash_Length len, byte[] data)
{
int i = 0;
for (; i < data.Length; i++) //判断要写入的数据是否全为0xff
{
if (data[i] != 0xff)
{
break;
}
}
if (i == data.Length)
{
return(0); //如果是，则不再写入，直接返回
}
string addr_str = addr.ToString("X8");
addr_str = addr_str.Substring(6, 2) + addr_str.Substring(4, 2) + addr_str.Substring(2, 2) + addr_str.Substring(0, 2);
string tmp = AB161X_Cmds.CMD_HEAD + "0701" + AB161X_Cmds.CMD_WRIT + CRC8Calculate(data, data.Length).ToString("X2") + addr_str;
byte[] write_buf = HexToByte(tmp);
try
{
_sp.DiscardInBuffer();
_sp.Write(write_buf, 0, write_buf.Length);
_sp.Write(data, 0, data.Length);
}
catch (Exception) { }
int have_read = 0; //已经读出的数据
int need_read = 11; //还需要读出的数据
DateTime dt = DateTime.UtcNow;
while ((need_read - have_read > 0) && (((TimeSpan)(DateTime.UtcNow - dt)).TotalSeconds < 2))
{
try
{
have_read += _sp.Read(write_buf, have_read, need_read - have_read);
}
catch (Exception)
{
return(-1);
}
}
if ((have_read == 11) && (write_buf[0] == 0x05) && (write_buf[1] == 0x5b) && (write_buf[4] == 0x07) && (write_buf[5] == 0x07))
{
return(0);
}
return(-1);
}
public int read_flash(long addr, Flash_Length len, byte[] data)
{
byte[] read_buff = new byte[10240]; //10K
string len_str = null;
string addr_str = addr.ToString("X8");
addr_str = addr_str.Substring(6, 2) + addr_str.Substring(4, 2) + addr_str.Substring(2, 2) + addr_str.Substring(0, 2);
switch (len)
{
case Flash_Length.LEN_256B:
len_str = "01";
break;
case Flash_Length.LEN_1KB:
len_str = "02";
break;
case Flash_Length.LEN_4KB:
len_str = "04";
break;
case Flash_Length.LEN_8KB:
len_str = "06";
break;
default:
len_str = "01";
break;
}
string tmp = AB161X_Cmds.CMD_HEAD + "0700" + AB161X_Cmds.CMD_READ + len_str + addr_str;
byte[] write_buf = HexToByte(tmp);
try
{
_sp.DiscardInBuffer();
_sp.Write(write_buf, 0, write_buf.Length);
}
catch (Exception) { }
int have_read = 0; //已经读出的数据
int need_read = 269; //还需要读出的数据
DateTime dt = DateTime.UtcNow;
while ((need_read - have_read > 0) && (((TimeSpan)(DateTime.UtcNow - dt)).TotalSeconds < 2))
{
try
{
have_read += _sp.Read(read_buff, have_read, need_read - have_read);
}
catch (Exception)
{
return(0);
}
}
if ((read_buff[0] == 0x05) && (read_buff[1] == 0x5b) && (read_buff[2] == 0x09) && (read_buff[3] == 0x01) && have_read == 269)
{
Array.Copy(read_buff, 13, data, 0, 256);
return(256);
}
else
{
return(0);
}
}
