RfidResearchGroup/proxmark3
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duration isnt 15bits, its 16. length is 15bits.

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This commit is contained in:
iceman1001 2020-07-21 10:49:29 +02:00
parent e94cbd8da5
commit df404a652a
2 changed files with 17 additions and 4 deletions
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17
armsrc/BigBuf.c
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@ -221,17 +221,17 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
duration = (UINT32_MAX - timestamp_start) + timestamp_end;
}
if (duration > 0x7FFF) {
if (duration > 0xFFFF) {
/*
if (DBGLEVEL >= DBG_DEBUG) {
Dbprintf("Error in LogTrace: duration too long for 15 bits encoding: 0x%08x start: 0x%08x end: 0x%08x", duration, timestamp_start, timestamp_end);
Dbprintf("Error in LogTrace: duration too long for 16 bits encoding: 0x%08x start: 0x%08x end: 0x%08x", duration, timestamp_start, timestamp_end);
}
*/
duration /= 32;
duration = 0;
}
hdr->timestamp = timestamp_start;
hdr->duration = duration & 0x7FFF;
hdr->duration = duration & 0xFFFF;
hdr->data_len = iLen;
hdr->isResponse = !readerToTag;
trace_len += TRACELOG_HDR_LEN;
@ -254,6 +254,15 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
return true;
}
// specific LogTrace function for ISO15693: the duration needs to be scaled because otherwise it won't fit into a uint16_t
bool LogTrace_ISO15693(const uint8_t *bytes, uint16_t len, uint32_t ts_start, uint32_t ts_end, uint8_t *parity, bool reader2tag) {
uint32_t duration = ts_end - ts_start;
duration /= 32;
ts_end = ts_start + duration;
return LogTrace(bytes, len, ts_start, ts_end, parity, reader2tag);
}
// Emulator memory
uint8_t emlSet(uint8_t *data, uint32_t offset, uint32_t length) {
uint8_t *mem = BigBuf_get_EM_addr();

4
armsrc/BigBuf.h
View file

@ -42,7 +42,11 @@ void clear_trace(void);
void set_tracing(bool enable);
void set_tracelen(uint32_t value);
bool get_tracing(void);
bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag);
bool LogTrace_ISO15693(const uint8_t *bytes, uint16_t len, uint32_t ts_start, uint32_t ts_end, uint8_t *parity, bool reader2tag);
uint8_t emlSet(uint8_t *data, uint32_t offset, uint32_t length);