AntiCat [Mon, 20 Aug 2018 20:29:34 +0000 (22:29 +0200)]
Legic: rewrite reader to use xcorrelation and precise timing (#654)
* Legic: rewrite reader to use xcorrelation and precise timing
- Even tough Legic tags transmit just AM, receiving using
xcorrelation results in a significantly better signal
quality.
- Switching from bit bang to a hardware based ssc frees
up CPU time for other tasks e.g. prng and demodulation
- Having all times based on a fixed ts, results in perfect
rwd-tag synchronization without magic +/- calculations.
* hi_read_tx: remove jerry-riged hysteresis based receiver
- This feature got obsolete by a x-correlation based receiver.
* Legic: adjusted sampling to new ssp clock speed
- Sampling is 4 times faster and pipeline daly reduced to 1/4.
The new code samples each bit earyler to account for the
shorter pipeline. That introduced bit errors by leeking the
next bit into the current one.
* Legic: average 8 samples for better noise rejection.
* Update CHANGELOG.md
pwpiwi [Wed, 15 Aug 2018 12:03:20 +0000 (14:03 +0200)]
ISO15693 device side improvements (#652)
* ISO15693 device side improvements
* increase accuracy by doubling the sample frequency (hi_read_rx_xcorr.v)
* adjust armsrc/iso15693.c and client/cmdhf15.c accordingly
* use more accurate approximation for sqrt(ci^2 + cq^2)
* improve EOF detection (was often mistaken for Logic0, resulting in "error, uneven octet! (extra bits!)")
* hi_read_r_xcorr.v: avoid overflows during accumulation and truncation
* explicitely cast unsigned ADC samples to signed
AntiCat [Tue, 14 Aug 2018 07:24:02 +0000 (09:24 +0200)]
fix: 32bit tick timer based on TC0 and TC1 (#653)
TC1 counts the number of TC0 overflows (carry bits).
In random conditions TC1 would return or stay at zero,
instead of counting up. This due to the behavior of the
reset signal.
SAM7S Series Datasheet, 33.5.6 Trigger:
Regardless of the trigger used, it will be taken into account
at the following active edge of the selected clock. This means
that the counter value can be read differently from zero just
after a trigger, especially when a low frequency signal is
selected as the clock.
The new code first prepares TC1 and asserts TC1 trigger and
then prepares TC0 and asserts TC0 trigger. The TC0 start-up
will reset TC1.
pwpiwi [Sun, 5 Aug 2018 16:15:03 +0000 (18:15 +0200)]
mod hw version: (#631)
* create fpga version info at compile time (by additional functionality in fpgacompress)
* remove hw version caching (prepare USB reconnect)
* fix calculation of available compressed bytes in fpga_loader.c
* These are used to pack and unpack the bit length, facility code and card number from "short" HID Prox IDs.
* This also simplifies some repeated code that is used to parse hex digits in lfhid, and adds basic client-side validation to the `lf hid clone` and `lf hid sim` commands, for when an ID that is too long is entered.
* Implements parity checks/calculation for 26-bit H10301 cards.
* Adds links to useful resources for HID Prox cards.
* Adds an explicit warning about the lack of parities on non-26-bit cards.
* Changes all the examples to use 26-bit IDs that have a parity bit set.
pwpiwi [Sun, 3 Jun 2018 12:25:20 +0000 (14:25 +0200)]
USB comms: part 4 towards @micolous PR #463
* make uart_communication(), storeCommand() and getCommand() static in comms.c
* move receiver thread creation and respective mutexes to comms.c
* add mutex and signal for tx buffer
* use comms.c for flasher as well
* remove comm functions from client/proxmark3.h
* this completes isolating all USB communication related functions in comms.c
* don't assume a port to be defined by a name. Change parameter in OpenProxmark() to void*
* comms.c: set sp and serial_port_name to NULL when offline
pwpiwi [Tue, 8 May 2018 05:54:49 +0000 (07:54 +0200)]
rework of GetFromBigBuf() (#597)
* this should fix crashes reported in issue #497
* don't allow receiver thread to write directly into arbitrary main thread's memory
* instead use cmdBuffer[] for CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K as well
* add timeout and warning options to GetFromBigBuf(), same as in WaitForResponseTimeoutW()
* move GetFromBigBuf() from data.c to comms.c
* remove data.c and data.h
* change variable 'sp' from global to static
* move code to open and close USB port to comms.c (OpenProxmark() and CloseProxmark())
* change scope of USBCommandReceived() to static
* (flasher still unchanged)
* change variable 'offline' from global to static
* change variable 'FlushAfterWrite' from global to static
* remove unused global variable 'current_command'
* WaitForResponseTimeoutW(CMD_UNKNOWN, ...) waits for any command
* #include "printf.h" or <stdio.h> in iso15693tools.c to define sprintf()
* and some minor changes/comments
pwpiwi [Sat, 31 Mar 2018 07:52:43 +0000 (09:52 +0200)]
USB comm: prepare for @micolous change (PR#463) (#587)
* move communication related code from proxmark3.c and cmdmain.c to new file comms.c
* replace byte_t by uint8_t in uart_posix.c and uart_win32.c
* move OpenProxmark() and CloseProxmark() from flasher.c to flash.c
* move print_lock mutex including initializer to ui.c
* minor changes in printing help texts
* no changes in comms functionality yet
Matthew Daley [Wed, 28 Mar 2018 10:37:07 +0000 (23:37 +1300)]
Fix offset Indala UID display
Commit 1dae9811f22b7f2cea340cee6945cb349046129d extended the amount of
fixed bits searched for when decoding 64-bit Indala. These additional
bits come from the end of one UID, and therefore need to be skipped past
when actually retrieving the UID.
marshmellow42 [Fri, 9 Feb 2018 20:49:55 +0000 (15:49 -0500)]
add bitbang option to lf cmdread
by setting delay to 0 we can use cmd binary to bitbang the antenna.
note that the timing isn't perfect (especially on the off periods) but
is fairly close. worst i've seen it off is 8us on a large off period.
but i don't have the best test equipment...
pwpiwi [Thu, 8 Feb 2018 13:50:03 +0000 (14:50 +0100)]
hf mf mifare:
* prevent WDT crash on repeated tries
* comes with faster execution as side effect
* use uint8_t instead of byte_t
* populate ar instead of (correctly) assuming that it is zero
* remove the "will take a few seconds longer" message because it is no longer true
pwpiwi [Wed, 31 Jan 2018 17:31:51 +0000 (18:31 +0100)]
add force_align_arg_pointer attribute to all callback functions
* inspired by issue #404 and respective fix PR #538
* possible fix for mysterious crashes, e.g. issue #497 and http://www.proxmark.org/forum/viewtopic.php?id=5388
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