ISO15693 CRC calculation is slow and it delayed too much transmission of long
frames. Some readers marked transmission as unsuccesfull and ignored data.
Moving CRC calculation inside the codec allows to start modulating the field
while the CRC is not yet ready but, by the time it has to be trasmitted,
calculation will be done.
This fixes https://github.com/emsec/ChameleonMini/issues/262
In EM4233, there still are issues with Read Multiple command when block
locking status is requested for more than 0x1F blocks
Implemented a check in ISO15693 codec to avoid out of bound CRC writes.
Removed the if-elseif in EM4233 to use a switch case which yields minor
speed improvements of ~1,5 microseconds
Avoid reading the UID every AppProcess tick in both EM4233 and TiTagIT
to save ~11 microseconds.
Since GCC 10, the compiler defaults to -fno-common, thus variables with
multiple tentative definitions result in linker errors.
We've (me and @MrMoDDoM) extern-ed the shared variables to fix the issue.
Also, when I implemented ISR sharing, somehow I forgot about a function
which was shared as well, so I fixed that mistake and added a couple of
comments on how shared function calls work.
This adds automatic cloning of Mifare Ultralight cards to the selected
setting.
Currently, only the DUMP_MFU command existed. In order to clone a Mifare
Ultralight card, the user had to convert the hex output of DUMP_MFU to binary
and upload the result to the card.
The CLONE_MFU command will attempt to read and store the Mifare Ultralight
contents directy to the slot which is then transitioned to emulation mode.
The CLONE_MFU button action does the same, so the board can be configured to
clone cards by simply selecting a slot with one button and cloning with the
other.
E0 and E1 commands will be expanded as reverse engineering continues. At the moment E0 will be used to work on reader response to A1 random number.
Fixed 2 different bugs in Login. Fixed Lock DSFID command
Removed frame integrity checks from PrepareFrame, since it's already needed to do them before PrepareFrame should be called
Select command did not fall back to READY state if Select was issued on another tag.
PrepareFrame allowed the tag to respond to Selected requests even if we were not in SELECTED state.
Also fixed Read Single and Read Multiple out of bound reads in case of addressed commands.
Federico Cerutti
Fabian
Hector Sanjuan
Enrico Pozzobon
slaenger
Lava Git
Georg
