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Merge pull request #84 from marshmellow42/master

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EM410x bug fix
This commit is contained in:
Martin Holst Swende 2015-03-25 11:10:51 +01:00
commit 062e28912c
3 changed files with 46 additions and 51 deletions
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1
armsrc/lfops.c
View file

@ -896,6 +896,7 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
//Dbprintf("DEBUG: No Tag");
}
WDT_HIT();
hi = 0;
lo = 0;
clk=0;
invert=0;

51
client/cmddata.c
View file

@ -280,24 +280,22 @@ void printEM410x(uint32_t hi, uint64_t id)
}
if (hi){
//output 88 bit em id
PrintAndLog("EM TAG ID : %06x%016llx", hi, id);
PrintAndLog("\nEM TAG ID : %06x%016llx", hi, id);
} else{
//output 40 bit em id
PrintAndLog("EM TAG ID : %010llx", id);
PrintAndLog("Unique TAG ID: %010llx", id2lo);
PrintAndLog("");
PrintAndLog("Possible de-scramble patterns");
PrintAndLog("HoneyWell IdentKey");
PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
PrintAndLog("DEZ 14/IK2 : %014lld",id);
PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
PrintAndLog("Other : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
PrintAndLog("\nEM TAG ID : %010llx", id);
PrintAndLog("Unique TAG ID : %010llx", id2lo);
PrintAndLog("\nPossible de-scramble patterns");
PrintAndLog("HoneyWell IdentKey {");
PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
PrintAndLog("DEZ 14/IK2 : %014lld",id);
PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
(id2lo & 0xf000000000) >> 36,
(id2lo & 0x0f00000000) >> 32,
(id2lo & 0x00f0000000) >> 28,
@ -309,10 +307,9 @@ void printEM410x(uint32_t hi, uint64_t id)
(id2lo & 0x00000000f0) >> 4,
(id2lo & 0x000000000f)
);
PrintAndLog("");
uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
PrintAndLog("Pattern Paxton : %0d", paxton);
PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
PrintAndLog("Pattern Paxton : %0d", paxton);
uint32_t p1id = (id & 0xFFFFFF);
uint8_t arr[32] = {0x00};
@ -322,7 +319,7 @@ void printEM410x(uint32_t hi, uint64_t id)
arr[i] = (p1id >> i) & 1;
}
uint32_t p1 = 0;
uint32_t p1 = 0;
p1 |= arr[23] << 21;
p1 |= arr[22] << 23;
@ -337,7 +334,7 @@ void printEM410x(uint32_t hi, uint64_t id)
p1 |= arr[15] << 13;
p1 |= arr[14] << 15;
p1 |= arr[13] << 12;
p1 |= arr[12] << 14;
p1 |= arr[12] << 14;
p1 |= arr[11] << 6;
p1 |= arr[10] << 2;
@ -347,18 +344,18 @@ void printEM410x(uint32_t hi, uint64_t id)
p1 |= arr[7] << 0;
p1 |= arr[6] << 8;
p1 |= arr[5] << 11;
p1 |= arr[4] << 3;
p1 |= arr[4] << 3;
p1 |= arr[3] << 10;
p1 |= arr[2] << 4;
p1 |= arr[1] << 5;
p1 |= arr[0] << 9;
PrintAndLog("Pattern 1 : 0x%X - %d", p1, p1);
p1 |= arr[0] << 9;
PrintAndLog("Pattern 1 : 0x%X - %d", p1, p1);
uint16_t sebury1 = id & 0xFFFF;
uint8_t sebury2 = (id >> 16) & 0x7F;
uint32_t sebury3 = id & 0x7FFFFF;
PrintAndLog("Pattern Sebury : %d %d %d (hex: %X %X %X)", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
PrintAndLog("Pattern Sebury : %d %d %d (hex: %X %X %X)", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
}
}
return;
@ -400,8 +397,8 @@ int CmdAskEM410xDemod(const char *Cmd)
PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
return 0;
}
uint32_t hi;
uint64_t lo;
uint32_t hi = 0;
uint64_t lo = 0;
if (AskEm410xDemod(Cmd, &hi, &lo)) {
PrintAndLog("EM410x pattern found: ");
printEM410x(hi, lo);

45
common/lfdemod.c
View file

@ -88,37 +88,34 @@ uint8_t Em410xDecode(uint8_t *BitStream, size_t *size, size_t *startIdx, uint32_
return 0;
}
// 111111111 bit pattern represent start of frame
uint8_t preamble[] = {1,1,1,1,1,1,1,1,1};
// include 0 in front to help get start pos
uint8_t preamble[] = {0,1,1,1,1,1,1,1,1,1};
uint32_t idx = 0;
uint32_t parityBits = 0;
uint8_t errChk = 0;
uint8_t FmtLen = 10;
*startIdx = 0;
for (uint8_t extraBitChk=0; extraBitChk<5; extraBitChk++){
errChk = preambleSearch(BitStream+extraBitChk+*startIdx, preamble, sizeof(preamble), size, startIdx);
if (errChk == 0) return 0;
if (*size>64) FmtLen = 22;
if (*size<64) return 0;
idx = *startIdx + 9;
for (i=0; i<FmtLen; i++){ //loop through 10 or 22 sets of 5 bits (50-10p = 40 bits or 88 bits)
parityBits = bytebits_to_byte(BitStream+(i*5)+idx,5);
//check even parity
if (parityTest(parityBits, 5, 0) == 0){
//parity failed try next bit (in the case of 1111111111) but last 9 = preamble
startIdx++;
errChk = 0;
break;
}
//set uint64 with ID from BitStream
for (uint8_t ii=0; ii<4; ii++){
*hi = (*hi << 1) | (*lo >> 63);
*lo = (*lo << 1) | (BitStream[(i*5)+ii+idx]);
}
errChk = preambleSearch(BitStream, preamble, sizeof(preamble), size, startIdx);
if (errChk == 0 || *size < 64) return 0;
if (*size > 64) FmtLen = 22;
*startIdx += 1; //get rid of 0 from preamble
idx = *startIdx + 9;
for (i=0; i<FmtLen; i++){ //loop through 10 or 22 sets of 5 bits (50-10p = 40 bits or 88 bits)
parityBits = bytebits_to_byte(BitStream+(i*5)+idx,5);
//check even parity
if (parityTest(parityBits, 5, 0) == 0){
//parity failed quit
return 0;
}
//set uint64 with ID from BitStream
for (uint8_t ii=0; ii<4; ii++){
*hi = (*hi << 1) | (*lo >> 63);
*lo = (*lo << 1) | (BitStream[(i*5)+ii+idx]);
}
if (errChk != 0) return 1;
//skip last 5 bit parity test for simplicity.
// *size = 64 | 128;
}
if (errChk != 0) return 1;
//skip last 5 bit parity test for simplicity.
// *size = 64 | 128;
return 0;
}