github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-19 21:03:48 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

CHG; still looking at 14b, this time started to look at the tracelog times not working.

Browse source
This commit is contained in:
iceman1001 2016-08-09 23:13:18 +02:00
commit 86db8973b0
2 changed files with 50 additions and 41 deletions
Download patch file Download diff file Expand all files Collapse all files

65
armsrc/iso14443b.c
View file

@ -40,7 +40,7 @@
//#define SEND4STUFFBIT(x) ToSendStuffBit(x);
// iceman, this threshold value, what makes 8 a good amplituted for this IQ values?
#ifndef SUBCARRIER_DETECT_THRESHOLD
# define SUBCARRIER_DETECT_THRESHOLD 6
# define SUBCARRIER_DETECT_THRESHOLD 8
#endif
static void iso14b_set_timeout(uint32_t timeout);
@ -280,13 +280,14 @@ static void CodeIso14443bAsTag(const uint8_t *cmd, int len) {
// Data bits
b = cmd[i];
for(j = 0; j < 8; ++j) {
if(b & 1) {
SEND4STUFFBIT(1);
//ToSendStuffBit(1);
} else {
SEND4STUFFBIT(0);
//ToSendStuffBit(0);
}
// if(b & 1) {
// SEND4STUFFBIT(1);
// //ToSendStuffBit(1);
// } else {
// SEND4STUFFBIT(0);
// //ToSendStuffBit(0);
// }
SEND4STUFFBIT( b & 1 );
b >>= 1;
}
@ -802,7 +803,6 @@ static RAMFUNC int Handle14443bTagSamplesDemod(int ci, int cq) {
case DEMOD_UNSYNCD:
CHECK_FOR_SUBCARRIER();
if (MF_DBGLEVEL >= 3) { Dbprintf("Demod.state = %d", v); }
// subcarrier detected
if (v > SUBCARRIER_DETECT_THRESHOLD) {
@ -858,7 +858,7 @@ static RAMFUNC int Handle14443bTagSamplesDemod(int ci, int cq) {
Demod.state = DEMOD_UNSYNCD;
} else {
LED_C_ON(); // Got SOF
Demod.startTime = GetCountSspClk();
//Demod.startTime = GetCountSspClk();
Demod.state = DEMOD_AWAITING_START_BIT;
Demod.posCount = 0;
Demod.len = 0;
@ -904,7 +904,7 @@ static RAMFUNC int Handle14443bTagSamplesDemod(int ci, int cq) {
Demod.thisBit += v;
Demod.shiftReg >>= 1;
// logic '1'
// OR in a logic '1'
if (Demod.thisBit > 0) Demod.shiftReg |= 0x200;
++Demod.bitCount;
@ -923,7 +923,7 @@ static RAMFUNC int Handle14443bTagSamplesDemod(int ci, int cq) {
} else {
// this one is a bit hard, either its a correc byte or its unsynced.
Demod.state = DEMOD_UNSYNCD;
Demod.endTime = GetCountSspClk();
//Demod.endTime = GetCountSspClk();
LED_C_OFF();
// This is EOF (start, stop and all data bits == '0'
@ -1018,7 +1018,7 @@ static void GetTagSamplesFor14443bDemod() {
Dbhexdump(ISO14443B_DMA_BUFFER_SIZE, (uint8_t *)dmaBuf, FALSE);
if ( Demod.len > 0 )
LogTrace(Demod.output, Demod.len, Demod.startTime, Demod.endTime, NULL, FALSE);
LogTrace(Demod.output, Demod.len, time_0, time_stop, NULL, FALSE);
}
@ -1075,8 +1075,7 @@ static void TransmitFor14443b_AsReader(void) {
// Code a layer 2 command (string of octets, including CRC) into ToSend[],
// so that it is ready to transmit to the tag using TransmitFor14443b().
//-----------------------------------------------------------------------------
static void CodeIso14443bAsReader(const uint8_t *cmd, int len)
{
static void CodeIso14443bAsReader(const uint8_t *cmd, int len) {
/*
* Reader data transmission:
* - no modulation ONES
@ -1112,14 +1111,24 @@ static void CodeIso14443bAsReader(const uint8_t *cmd, int len)
ToSendStuffBit(0);
// Data bits
b = cmd[i];
if ( b & 1 ) ToSendStuffBit(1); else ToSendStuffBit(0);
if ( (b>>1) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
if ( (b>>2) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
if ( (b>>3) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
if ( (b>>4) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
if ( (b>>5) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
if ( (b>>6) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
if ( (b>>7) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
// if ( b & 1 ) ToSendStuffBit(1); else ToSendStuffBit(0);
// if ( (b>>1) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
// if ( (b>>2) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
// if ( (b>>3) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
// if ( (b>>4) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
// if ( (b>>5) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
// if ( (b>>6) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
// if ( (b>>7) & 1) ToSendStuffBit(1); else ToSendStuffBit(0);
ToSendStuffBit( b & 1);
ToSendStuffBit( (b>>1) & 1);
ToSendStuffBit( (b>>2) & 1);
ToSendStuffBit( (b>>3) & 1);
ToSendStuffBit( (b>>4) & 1);
ToSendStuffBit( (b>>5) & 1);
ToSendStuffBit( (b>>6) & 1);
ToSendStuffBit( (b>>7) & 1);
// Stop bit
ToSendStuffBit(1);
// EGT extra guard time
@ -1145,15 +1154,15 @@ static void CodeIso14443bAsReader(const uint8_t *cmd, int len)
}
/**
Convenience function to encode, transmit and trace iso 14443b comms
**/
/*
* Convenience function to encode, transmit and trace iso 14443b comms
*/
static void CodeAndTransmit14443bAsReader(const uint8_t *cmd, int len) {
CodeIso14443bAsReader(cmd, len);
uint32_t time_start = GetCountSspClk();
CodeIso14443bAsReader(cmd, len);
TransmitFor14443b_AsReader();
if(trigger) LED_A_ON();