X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/6980d66b054071c75dfa522ad36eda97a2556159..refs/pull/274/head:/armsrc/lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 2ddd2a06..a3f7a02f 100644
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -72,7 +72,7 @@ void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t period_0, uint
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
 
 	// now do the read
-	DoAcquisition_config(false);
+	DoAcquisition_config(false, 0);
 }
 
 /* blank r/w tag data stream
@@ -1096,7 +1096,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 void TurnReadLFOn(int delay) {
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
 	// Give it a bit of time for the resonant antenna to settle.
-	SpinDelayUs(delay); //155*8 //50*8
+	WaitUS(delay); //155*8 //50*8
 }
 
 // Write one bit to card
@@ -1106,7 +1106,7 @@ void T55xxWriteBit(int bit) {
 	else
 		TurnReadLFOn(WRITE_1);
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-	SpinDelayUs(WRITE_GAP);
+	WaitUS(WRITE_GAP);
 }
 
 // Send T5577 reset command then read stream (see if we can identify the start of the stream)
@@ -1117,20 +1117,22 @@ void T55xxResetRead(void) {
 
 	// Set up FPGA, 125kHz
 	LFSetupFPGAForADC(95, true);
-
+	StartTicks();
+	// make sure tag is fully powered up...
+	WaitMS(5);
+	
 	// Trigger T55x7 in mode.
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-	SpinDelayUs(START_GAP);
+	WaitUS(START_GAP);
 
 	// reset tag - op code 00
 	T55xxWriteBit(0);
 	T55xxWriteBit(0);
 
-	// Turn field on to read the response
 	TurnReadLFOn(READ_GAP);
 
 	// Acquisition
-	doT55x7Acquisition(BigBuf_max_traceLen());
+	DoPartialAcquisition(0, true, BigBuf_max_traceLen());
 
 	// Turn the field off
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
@@ -1143,19 +1145,24 @@ void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg
 	LED_A_ON();
 	bool PwdMode = arg & 0x1;
 	uint8_t Page = (arg & 0x2)>>1;
+	bool testMode = arg & 0x4;
 	uint32_t i = 0;
 
 	// Set up FPGA, 125kHz
 	LFSetupFPGAForADC(95, true);
-
+	StartTicks();
+	// make sure tag is fully powered up...
+	WaitMS(5);
 	// Trigger T55x7 in mode.
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-	SpinDelayUs(START_GAP);
+	WaitUS(START_GAP);
 
-	// Opcode 10
-	T55xxWriteBit(1);
-	T55xxWriteBit(Page); //Page 0
-	if (PwdMode){
+	if (testMode) Dbprintf("TestMODE");
+	// Std Opcode 10
+	T55xxWriteBit(testMode ? 0 : 1);
+	T55xxWriteBit(testMode ? 1 : Page); //Page 0
+
+	if (PwdMode) {
 		// Send Pwd
 		for (i = 0x80000000; i != 0; i >>= 1)
 			T55xxWriteBit(Pwd & i);
@@ -1173,11 +1180,31 @@ void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg
 
 	// Perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550,
 	// so wait a little more)
-	TurnReadLFOn(20 * 1000);
+
+	// "there is a clock delay before programming" 
+	//  - programming takes ~5.6ms for t5577 ~18ms for E5550 or t5567
+	//  so we should wait 1 clock + 5.6ms then read response? 
+	//  but we need to know we are dealing with t5577 vs t5567 vs e5550 (or q5) marshmellow...
+	if (testMode) {
+		//TESTMODE TIMING TESTS: 
+		// <566us does nothing 
+		// 566-568 switches between wiping to 0s and doing nothing
+		// 5184 wipes and allows 1 block to be programmed.
+		// indefinite power on wipes and then programs all blocks with bitshifted data sent.
+		TurnReadLFOn(5184); 
+
+	} else {
+		TurnReadLFOn(20 * 1000);
 		//could attempt to do a read to confirm write took
 		// as the tag should repeat back the new block 
 		// until it is reset, but to confirm it we would 
-		// need to know the current block 0 config mode
+		// need to know the current block 0 config mode for
+		// modulation clock an other details to demod the response...
+		// response should be (for t55x7) a 0 bit then (ST if on) 
+		// block data written in on repeat until reset. 
+
+		//DoPartialAcquisition(20, true, 12000);
+	}
 
 	// turn field off
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
@@ -1196,7 +1223,7 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
 	bool PwdMode = arg0 & 0x1;
 	uint8_t Page = (arg0 & 0x2) >> 1;
 	uint32_t i = 0;
-	bool RegReadMode = (Block == 0xFF);
+	bool RegReadMode = (Block == 0xFF);//regular read mode
 
 	//clear buffer now so it does not interfere with timing later
 	BigBuf_Clear_ext(false);
@@ -1206,10 +1233,12 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
 
 	// Set up FPGA, 125kHz to power up the tag
 	LFSetupFPGAForADC(95, true);
-
+	StartTicks();
+	// make sure tag is fully powered up...
+	WaitMS(5);
 	// Trigger T55x7 Direct Access Mode with start gap
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-	SpinDelayUs(START_GAP);
+	WaitUS(START_GAP);
 
 	// Opcode 1[page]
 	T55xxWriteBit(1);
@@ -1229,10 +1258,13 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
 			T55xxWriteBit(Block & i);		
 
 	// Turn field on to read the response
-	TurnReadLFOn(READ_GAP);
+	// 137*8 seems to get to the start of data pretty well... 
+	//  but we want to go past the start and let the repeating data settle in...
+	TurnReadLFOn(210*8); 
 
 	// Acquisition
-	doT55x7Acquisition(12000);
+	// Now do the acquisition
+	DoPartialAcquisition(0, true, 12000);
 
 	// Turn the field off
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
@@ -1246,10 +1278,13 @@ void T55xxWakeUp(uint32_t Pwd){
 	
 	// Set up FPGA, 125kHz
 	LFSetupFPGAForADC(95, true);
+	StartTicks();
+	// make sure tag is fully powered up...
+	WaitMS(5);
 	
 	// Trigger T55x7 Direct Access Mode
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-	SpinDelayUs(START_GAP);
+	WaitUS(START_GAP);
 	
 	// Opcode 10
 	T55xxWriteBit(1);
@@ -1367,7 +1402,7 @@ void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t
 // clone viking tag to T55xx
 void CopyVikingtoT55xx(uint32_t block1, uint32_t block2, uint8_t Q5) {
 	uint32_t data[] = {T55x7_BITRATE_RF_32 | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT), block1, block2};
-	if (Q5) data[0] = ( ((32-2)>>1) << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | 2 << T5555_MAXBLOCK_SHIFT;
+	if (Q5) data[0] = T5555_SET_BITRATE(32) | T5555_MODULATION_MANCHESTER | 2 << T5555_MAXBLOCK_SHIFT;
 	// Program the data blocks for supplied ID and the block 0 config
 	WriteT55xx(data, 0, 3);
 	LED_D_OFF();
@@ -1451,8 +1486,7 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) {
 		}
 		data[0] = clock | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT);
 	} else { //t5555 (Q5)
-		clock = (clock-2)>>1;  //n = (RF-2)/2
-		data[0] = (clock << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT);
+		data[0] = T5555_SET_BITRATE(clock) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT);
 	}
 
 	WriteT55xx(data, 0, 3);
@@ -1571,27 +1605,27 @@ void SendForward(uint8_t fwd_bit_count) {
 	fwd_write_ptr = forwardLink_data;
 	fwd_bit_sz = fwd_bit_count;
 
-	// Set up FPGA, 125kHz
+	// Set up FPGA, 125kHz or 95 divisor
 	LFSetupFPGAForADC(95, true);
-	
+
 	// force 1st mod pulse (start gap must be longer for 4305)
 	fwd_bit_sz--; //prepare next bit modulation
 	fwd_write_ptr++;
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-	SpinDelayUs(55*8); //55 cycles off (8us each)for 4305
+	WaitUS(55*8); //55 cycles off (8us each)for 4305  //another reader has 37 here...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
-	SpinDelayUs(16*8); //16 cycles on (8us each)
+	WaitUS(18*8); //18 cycles on (8us each)
 
 	// now start writting
 	while(fwd_bit_sz-- > 0) { //prepare next bit modulation
 		if(((*fwd_write_ptr++) & 1) == 1)
-			SpinDelayUs(32*8); //32 cycles at 125Khz (8us each)
+			WaitUS(32*8); //32 cycles at 125Khz (8us each)
 		else {
 			//These timings work for 4469/4269/4305 (with the 55*8 above)
 			FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-			SpinDelayUs(20*8); //16-4 cycles off (8us each) //23
+			WaitUS(23*8); //23 cycles off (8us each)
 			FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
-			SpinDelayUs(12*8); //16 cycles on (8us each) //9
+			WaitUS(18*8); //18 cycles on (8us each)
 		}
 	}
 }
@@ -1618,6 +1652,7 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 	BigBuf_Clear_ext(false);
 
 	LED_A_ON();
+	StartTicks();
 	//If password mode do login
 	if (PwdMode == 1) EM4xLogin(Pwd);
 
@@ -1626,9 +1661,9 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 	fwd_bit_count += Prepare_Addr( Address );
 
 	SendForward(fwd_bit_count);
-
+	WaitUS(400);
 	// Now do the acquisition
-	DoAcquisition_default(0,TRUE);
+	DoPartialAcquisition(20, true, 6000);
 	
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
 	LED_A_OFF();
@@ -1645,6 +1680,7 @@ void EM4xWriteWord(uint32_t flag, uint32_t Data, uint32_t Pwd) {
 	BigBuf_Clear_ext(false);
 
 	LED_A_ON();
+	StartTicks();
 	//If password mode do login
 	if (PwdMode) EM4xLogin(Pwd);
 
@@ -1656,10 +1692,11 @@ void EM4xWriteWord(uint32_t flag, uint32_t Data, uint32_t Pwd) {
 	SendForward(fwd_bit_count);
 
 	//Wait for write to complete
-	SpinDelay(10);
+	//SpinDelay(10);
 
+	WaitUS(6500);
 	//Capture response if one exists
-	DoAcquisition_default(20, TRUE);
+	DoPartialAcquisition(20, true, 6000);
 
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
 	LED_A_OFF();
@@ -1716,7 +1753,7 @@ void Cotag(uint32_t arg0) {
 	switch(rawsignal) {
 		case 0: doCotagAcquisition(50000); break;
 		case 1: doCotagAcquisitionManchester(); break;
-		case 2: DoAcquisition_config(TRUE); break;
+		case 2: DoAcquisition_config(true, 0); break;
 	}
 
 	// Turn the field off