RfidResearchGroup/proxmark3
1
1
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-03-20 03:48:33 +08:00
Code Issues Projects Releases Packages Wiki Activity

FIX: longer t55xx timings to compensate for delay of field damping, and minor adjustments.

Browse source
This commit is contained in:
Chris 2018-09-04 20:35:29 +02:00
parent e12d22b6d9
commit ac6bd61544
1 changed files with 15 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
armsrc/lfops.c
View file

@ -27,10 +27,10 @@
#endif
#define START_GAP 31*8 // was 250 // SPEC: 1*8 to 50*8 - typ 15*8 (15fc)
#define WRITE_GAP 20*8 // was 160 // SPEC: 1*8 to 20*8 - typ 10*8 (10fc)
#define WRITE_0 18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (24fc)
#define WRITE_1 50*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (56fc) 432 for T55x7; 448 for E5550
#define START_GAP 48*8 // was 250 // SPEC: 1*8 to 50*8 - typ 15*8 (15fc)
#define WRITE_GAP 18*8 // was 160 // SPEC: 1*8 to 20*8 - typ 10*8 (10fc)
#define WRITE_0 24*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (24fc)
#define WRITE_1 54*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (56fc) 432 for T55x7; 448 for E5550
#define READ_GAP 15*8
// VALUES TAKEN FROM EM4x function: SendForward
@ -474,9 +474,9 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
StopTicks();
}
// note: a call to FpgaDownloadAndGo(FPGA_BITSTREAM_LF) must be done before, but
// this may destroy the bigbuf so be sure this is called before calling SimulateTagLowFrequencyEx
void SimulateTagLowFrequencyEx(int period, int gap, int ledcontrol, int numcycles) {
// note this may destroy the bigbuf so be sure this is called before now...
//FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
//FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_TOGGLE_MODE );
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
@ -514,7 +514,7 @@ void SimulateTagLowFrequencyEx(int period, int gap, int ledcontrol, int numcycle
// wait until SSC_CLK goes HIGH
// used as a simple detection of a reader field?
while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {
while (!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {
WDT_HIT();
if ( usb_poll_validate_length() || BUTTON_PRESS() )
goto OUT;
@ -526,7 +526,7 @@ void SimulateTagLowFrequencyEx(int period, int gap, int ledcontrol, int numcycle
SHORT_COIL();
//wait until SSC_CLK goes LOW
while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {
while (AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {
WDT_HIT();
//if ( usb_poll_validate_length() || BUTTON_PRESS() )
if ( BUTTON_PRESS() )
@ -918,7 +918,7 @@ void CmdHIDdemodFSK(int findone, uint32_t *high, uint32_t *low, int ledcontrol)
idx = HIDdemodFSK(dest, &size, &hi2, &hi, &lo, &dummyIdx);
if ( idx < 0 ) continue;
if (idx>0 && lo>0 && (size==96 || size==192)){
if (idx > 0 && lo > 0 && (size == 96 || size == 192)){
// go over previously decoded manchester data and decode into usable tag ID
if (hi2 != 0){ //extra large HID tags 88/192 bits
Dbprintf("TAG ID: %x%08x%08x (%d)",
@ -1007,7 +1007,7 @@ void CmdAWIDdemodFSK(int findone, uint32_t *high, uint32_t *low, int ledcontrol)
LFSetupFPGAForADC(95, true);
while(!BUTTON_PRESS() && !usb_poll_validate_length()) {
while (!BUTTON_PRESS() && !usb_poll_validate_length()) {
WDT_HIT();
if (ledcontrol) LED_A_ON();
@ -1107,6 +1107,7 @@ void CmdEM410xdemod(int findone, uint32_t *high, uint64_t *low, int ledcontrol)
if (ledcontrol) LED_A_ON();
DoAcquisition_default(-1, true);
size = BigBuf_max_traceLen();
//askdemod and manchester decode
if (size > 16385) size = 16385; //big enough to catch 2 sequences of largest format
@ -1169,7 +1170,9 @@ void CmdIOdemodFSK(int findone, uint32_t *high, uint32_t *low, int ledcontrol) {
while (!BUTTON_PRESS() && !usb_poll_validate_length()) {
WDT_HIT();
if (ledcontrol) LED_A_ON();
DoAcquisition_default(-1,true);
DoAcquisition_default(-1, true);
//fskdemod and get start index
WDT_HIT();
idx = detectIOProx(dest, &size, &dummyIdx);