/// <summary>
/// Encode the desired access for the full sector including the block tailer
/// </summary>
/// <param name="accessSector">The access desired</param>
/// <param name="accessTypes">An array of 3 AccessType determining access of each block</param>
/// <returns>The 3 bytes encoding the rights</returns>
public (byte b6, byte b7, byte b8) EncodeSectorAndClockTailer(AccessSector accessSector, AccessType[] accessTypes)
{
if (accessTypes.Length != 3)
{
throw new ArgumentException($"{nameof(accessTypes)} can only be array of 3");
}
var tupleRes = EncodeSectorTailer(accessSector);
byte b6 = tupleRes.Item1;
byte b7 = tupleRes.Item2;
byte b8 = tupleRes.Item3;
for (byte i = 0; i < 3; i++)
{
tupleRes = EncodeSectorTailer(i, accessTypes[i]);
b6 |= tupleRes.Item1;
b7 |= tupleRes.Item2;
b8 |= tupleRes.Item3;
}
return(b6, b7, b8);
}
/// <summary>
/// Encode the desired access for the full sector including the block tailer
/// </summary>
/// <param name="accessSector">The access desired</param>
/// <param name="accessTypes">An array of 3 AccessType determining access of each block</param>
/// <returns>The 3 bytes encoding the rights</returns>
public (byte B6, byte B7, byte B8) EncodeSectorAndClockTailer(AccessSector accessSector, AccessType[] accessTypes)
{
if (accessTypes.Length != 3)
{
throw new ArgumentException("Array must have 3 elements.", nameof(accessTypes));
}
var tupleRes = EncodeSectorTailer(accessSector);
byte b6 = tupleRes.B6;
byte b7 = tupleRes.B7;
byte b8 = tupleRes.B8;
for (byte i = 0; i < 3; i++)
{
tupleRes = EncodeSectorTailer(i, accessTypes[i]);
b6 |= tupleRes.B6;
b7 |= tupleRes.B7;
b8 |= tupleRes.B8;
}
return(b6, b7, b8);
}
/// <summary>
/// Get the sector tailer bytes for a specific access sector configuration
/// </summary>
/// <param name="accessSector">the access sector</param>
/// <returns>the 3 bytes for configuration</returns>
public (byte B6, byte B7, byte B8) EncodeSectorTailer(AccessSector accessSector)
{
byte c1 = 0;
byte c2 = 0;
byte c3 = 0;
// Ignore AccessSector.KeyBRead
accessSector = accessSector & ~AccessSector.ReadKeyB;
// Find the table of truth and the core Access Bits
if (accessSector == (AccessSector.WriteKeyAWithKeyA | AccessSector.ReadAccessBitsWithKeyA | AccessSector.ReadKeyBWithKeyA |
AccessSector.WriteKeyBWithKeyA))
{
c1 = 0;
c2 = 0;
c3 = 0;
}
if (accessSector == (AccessSector.ReadAccessBitsWithKeyA | AccessSector.ReadKeyBWithKeyA))
{
c1 = 0;
c2 = 1;
c3 = 0;
}
if (accessSector == (AccessSector.WriteKeyAWithKeyB | AccessSector.ReadAccessBitsWithKeyA |
AccessSector.ReadAccessBitsWithKeyB | AccessSector.WriteKeyBWithKeyB))
{
c1 = 1;
c2 = 0;
c3 = 0;
}
if (accessSector == (AccessSector.ReadAccessBitsWithKeyA | AccessSector.ReadAccessBitsWithKeyB))
{
c1 = 1;
c2 = 1;
c3 = 0;
}
if (accessSector == (AccessSector.WriteKeyAWithKeyA | AccessSector.ReadAccessBitsWithKeyA |
AccessSector.WriteAccessBitsWithKeyA | AccessSector.ReadKeyBWithKeyA |
AccessSector.WriteKeyBWithKeyA))
{
c1 = 0;
c2 = 0;
c3 = 1;
}
if (accessSector == (AccessSector.WriteKeyAWithKeyB | AccessSector.ReadAccessBitsWithKeyA |
AccessSector.ReadAccessBitsWithKeyB | AccessSector.WriteAccessBitsWithKeyB |
AccessSector.WriteKeyBWithKeyB))
{
c1 = 0;
c2 = 1;
c3 = 1;
}
if (accessSector == (AccessSector.ReadAccessBitsWithKeyA |
AccessSector.ReadAccessBitsWithKeyB | AccessSector.WriteAccessBitsWithKeyB))
{
c1 = 1;
c2 = 0;
c3 = 1;
}
if (accessSector == (AccessSector.ReadAccessBitsWithKeyA |
AccessSector.ReadAccessBitsWithKeyB))
{
c1 = 1;
c2 = 1;
c3 = 1;
}
// Encode the into the 3 bytes
byte b6 = (byte)((((~c2) & 0x01) << 7) | (((~c1) & 0x01) << 3));
byte b7 = (byte)(((c1) << 7) | (((~c3) & 0x01) << 3));
byte b8 = (byte)(((c3) << 7) | ((c2) << 3));
return(b6, b7, b8);
}