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Improvements/Fixes to 14443 sniffing/snooping

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- fixed a circular buffer rollover bug in iso14443a.c
- fixed 7 Byte UID handling in hf mf sniff
- fixed "cannot append" error in hf mf sniff d
- fixed hint on mfkey32 in hf mf sim x
- fixed hf mf sniff sometimes showing rogue data from previous calloc
- improve snooping/sniffing by syncing modulation detector window with reader signal (hi_iso14443a.v)
- code cleanup of hi_iso14443a.v
This commit is contained in:
pwpiwi 2014-03-25 21:38:24 +01:00
commit d714d3effc
7 changed files with 478 additions and 369 deletions
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2
armsrc/util.c
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@ -363,8 +363,6 @@ void StartCountSspClk()
//
while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_FRAME)); // wait for ssp_frame to go high (start of frame)
while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_FRAME); // wait for ssp_frame to be low
// after the falling edge of ssp_frame, there is delay of 1/13,56MHz (73ns) until the next rising edge of ssp_clk. This are only a few
// processor cycles. We therefore may or may not be able to sync on this edge. Therefore better make sure that we miss it:
while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)); // wait for ssp_clk to go high
// note: up to now two ssp_clk rising edges have passed since the rising edge of ssp_frame
// it is now safe to assert a sync signal. This sets all timers to 0 on next active clock edge