/// <summary>
/// Read a page from a memory bank and print in hex
/// </summary>
/// <param name="bank"> PagedMemoryBank to read a page from </param>
/// <param name="pg"> page to read </param>
public static void dumpBankPage(OneWireContainer33 owd, PagedMemoryBank bank, int pg)
{
byte[] read_buf = new byte [bank.PageLength];
byte[] extra_buf = new byte [bank.ExtraInfoLength];
byte[] challenge = new byte [8];
byte[] secret = new byte [8];
byte[] sernum = new byte [8];
bool macvalid = false;
try
{
// read a page (use the most verbose and secure method)
if (bank.hasPageAutoCRC())
{
Debug.WriteLine("Using device generated CRC");
if (bank.hasExtraInfo())
{
bank.readPageCRC(pg, false, read_buf, 0, extra_buf);
owd.getChallenge(challenge, 0);
owd.getContainerSecret(secret, 0);
sernum = owd.Address;
macvalid = OneWireContainer33.isMACValid(bank.StartPhysicalAddress + pg * bank.PageLength, sernum, read_buf, extra_buf, challenge, secret);
}
else
{
bank.readPageCRC(pg, false, read_buf, 0);
}
}
else
{
if (bank.hasExtraInfo())
{
bank.readPage(pg, false, read_buf, 0, extra_buf);
}
else
{
bank.readPage(pg, false, read_buf, 0);
}
}
Debug.Write("Page " + pg + ": ");
hexPrint(read_buf, 0, read_buf.Length);
Debug.WriteLine("");
if (bank.hasExtraInfo())
{
Debug.Write("Extra: ");
hexPrint(extra_buf, 0, bank.ExtraInfoLength);
Debug.WriteLine("");
if (macvalid)
{
Debug.WriteLine("Data validated with correct MAC.");
}
else
{
Debug.WriteLine("Data not validated because incorrect MAC.");
}
}
}
catch (Exception e)
{
Debug.WriteLine(e);
}
}
/// <summary> Write memory in the current bank. It is recommended that
/// when writing data that some structure in the data is created
/// to provide error free reading back with read(). Or the
/// method 'writePagePacket()' could be used which automatically
/// wraps the data in a length and CRC.
///
/// When using on Write-Once devices care must be taken to write into
/// into empty space. If write() is used to write over an unlocked
/// page on a Write-Once device it will fail. If write verification
/// is turned off with the method 'setWriteVerification(false)' then
/// the result will be an 'AND' of the existing data and the new data.
///
/// </summary>
/// <param name="startAddr"> starting address, relative to the starting physical address
/// of this memory bank
/// </param>
/// <param name="writeBuf"> byte array containing data to write
/// </param>
/// <param name="offset"> offset into writeBuf to get data
/// </param>
/// <param name="len"> length in bytes to write
///
/// </param>
/// <throws> OneWireIOException </throws>
/// <throws> OneWireException </throws>
public virtual void write(int startAddr, byte[] writeBuf, int offset, int len)
{
//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
if (DEBUG)
{
Debug.debug("-----------------------------------------------------------");
Debug.debug("MemoryBankSHAEE.write(int,byte[],int,int) called");
Debug.debug(" startAddr=0x" + Convert.toHexString((byte)startAddr));
Debug.debug(" writeBuf", writeBuf, offset, len);
Debug.debug(" startPhysicalAddress=0x" + Convert.toHexString((byte)startPhysicalAddress));
}
//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
int room_left;
if (!checked_Renamed)
{
checked_Renamed = ib.checkStatus();
}
// return if nothing to do
if (len == 0)
{
return;
}
// attempt to put device at speed
checkSpeed();
// check to see if secret is set
if (!ib.ContainerSecretSet)
{
throw new OneWireException("Secret is not set.");
}
// check if write exceeds memory
if ((startAddr + len) > size)
{
throw new OneWireException("Write exceeds memory bank end");
}
// check if trying to write read only bank
if (ReadOnly)
{
throw new OneWireException("Trying to write read-only memory bank");
}
// loop while still have pages to write
int startx = 0, nextx = 0; // (start and next index into writeBuf)
byte[] raw_buf = new byte[8];
byte[] memory = new byte[(size - (startAddr & 0xE0))]; // till end of memory
int abs_addr = startPhysicalAddress + startAddr;
int pl = 8;
read(startAddr & 0xE0, false, memory, 0, memory.Length);
if (abs_addr >= 128)
{
ib.getContainerSecret(memory, 0);
}
do
{
// calculate room left in current page
room_left = pl - ((abs_addr + startx) % pl);
// check if block left will cross end of page
if ((len - startx) > room_left)
{
nextx = startx + room_left;
}
else
{
nextx = len;
}
// bug fix, if updating pages two and three in the same write op
// this used to fail, was (startAddr>=pageLength)
if ((startx + startAddr) >= pageLength)
{
Array.Copy(memory, (((startx + startAddr) / 8) * 8) - 32, raw_buf, 0, 8);
}
else
{
Array.Copy(memory, (((startx + startAddr) / 8) * 8), raw_buf, 0, 8);
}
if ((nextx - startx) == 8)
{
Array.Copy(writeBuf, offset + startx, raw_buf, 0, 8);
}
else if (((startAddr + nextx) % 8) == 0)
{
Array.Copy(writeBuf, offset + startx, raw_buf, ((startAddr + startx) % 8), 8 - ((startAddr + startx) % 8));
}
else
{
Array.Copy(writeBuf, offset + startx, raw_buf, ((startAddr + startx) % 8), ((startAddr + nextx) % 8) - ((startAddr + startx) % 8));
}
// write the page of data to scratchpad
scratchpad.writeScratchpad(abs_addr + startx + room_left - 8, raw_buf, 0, 8);
// Copy data from scratchpad into memory
scratchpad.copyScratchpad(abs_addr + startx + room_left - 8, raw_buf, 0, memory, 0);
// bug fix, if updating pages two and three in the same write op
// this used to fail, was (startAddr>=pageLength)
if ((startx + startAddr) >= pageLength)
{
Array.Copy(raw_buf, 0, memory, (((startx + startAddr) / 8) * 8) - 32, 8);
}
else
{
Array.Copy(raw_buf, 0, memory, (((startx + startAddr) / 8) * 8), 8);
}
// point to next index
startx = nextx;
}while (nextx < len);
//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
if (DEBUG)
{
Debug.debug("-----------------------------------------------------------");
}
//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
}