lf demod cleanup nrz clock detect fixes

[proxmark3-svn] / armsrc / lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 5f21738a23962fe25c634414a6c7364efb13b816..0691098b82ec5cb6330a70122d8e93c1cdb330e1 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -1078,21 +1078,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 #define WRITE_GAP 20*8 // was 160 // SPEC:  1*8 to 20*8 - typ 10*8 (or 10fc)
 #define WRITE_0   18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (or 24fc)
 #define WRITE_1   50*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (or 56fc)  432 for T55x7; 448 for E5550
-#define READ_GAP  52*8 
-
-//  VALUES TAKEN FROM EM4x function: SendForward
-//  START_GAP = 440;       (55*8) cycles at 125Khz (8us = 1cycle)
-//  WRITE_GAP = 128;       (16*8)
-//  WRITE_1   = 256 32*8;  (32*8) 
-
-//  These timings work for 4469/4269/4305 (with the 55*8 above)
-//  WRITE_0 = 23*8 , 9*8  SpinDelayUs(23*8); 
-
-// Sam7s has several timers, we will use the source TIMER_CLOCK1 (aka AT91C_TC_CLKS_TIMER_DIV1_CLOCK)
-// TIMER_CLOCK1 = MCK/2, MCK is running at 48 MHz, Timer is running at 48/2 = 24 MHz
-// Hitag units (T0) have duration of 8 microseconds (us), which is 1/125000 per second (carrier)
-// T0 = TIMER_CLOCK1 / 125000 = 192
-// 1 Cycle = 8 microseconds(us)  == 1 field clock
+#define READ_GAP  15*8 
 
 void TurnReadLFOn(int delay) {
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
@@ -1191,7 +1177,7 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {
        cmd_send(CMD_ACK,0,0,0,0,0);
 }
 
-// Read one card block in page 0
+// Read one card block in page [page]
 void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
        LED_A_ON();
        bool PwdMode = arg0 & 0x1;
@@ -1312,6 +1298,9 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
        // load chip config block
        data[0] = T55x7_BITRATE_RF_50 | T55x7_MODULATION_FSK2a | last_block << T55x7_MAXBLOCK_SHIFT;
 
+       //TODO add selection of chip for Q5 or T55x7
+       // data[0] = (((50-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | last_block << T5555_MAXBLOCK_SHIFT;
+
        LED_D_ON();
        // Program the data blocks for supplied ID
        // and the block 0 for HID format
@@ -1324,6 +1313,8 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
 
 void CopyIOtoT55x7(uint32_t hi, uint32_t lo) {
        uint32_t data[] = {T55x7_BITRATE_RF_64 | T55x7_MODULATION_FSK2a | (2 << T55x7_MAXBLOCK_SHIFT), hi, lo};
+       //TODO add selection of chip for Q5 or T55x7
+       // data[0] = (((64-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 2 << T5555_MAXBLOCK_SHIFT;
 
        LED_D_ON();
        // Program the data blocks for supplied ID
@@ -1340,6 +1331,9 @@ void CopyIndala64toT55x7(uint32_t hi, uint32_t lo) {
        //Program the 2 data blocks for supplied 64bit UID
        // and the Config for Indala 64 format (RF/32;PSK1 with RF/2;Maxblock=2)
        uint32_t data[] = { T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (2 << T55x7_MAXBLOCK_SHIFT), hi, lo};
+       //TODO add selection of chip for Q5 or T55x7
+       // data[0] = (((32-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_PSK1 | 2 << T5555_MAXBLOCK_SHIFT;
+
        WriteT55xx(data, 0, 3);
        //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data)
        //      T5567WriteBlock(0x603E1042,0);
@@ -1352,6 +1346,8 @@ void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t
        // and the block 0 for Indala224 format 
        //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7)
        data[0] = T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (7 << T55x7_MAXBLOCK_SHIFT);
+       //TODO add selection of chip for Q5 or T55x7
+       // data[0] = (((32-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_PSK1 | 7 << T5555_MAXBLOCK_SHIFT;
        WriteT55xx(data, 0, 8);
        //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data)
        //      T5567WriteBlock(0x603E10E2,0);
@@ -1423,19 +1419,20 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) {
 
        // Write EM410x ID
        uint32_t data[] = {0, id>>32, id & 0xFFFFFFFF};
-       if (card) {
-               clock = (card & 0xFF00) >> 8;
-               clock = (clock == 0) ? 64 : clock;
-               Dbprintf("Clock rate: %d", clock);
-               clock = GetT55xxClockBit(clock);
+
+       clock = (card & 0xFF00) >> 8;
+       clock = (clock == 0) ? 64 : clock;
+       Dbprintf("Clock rate: %d", clock);
+       if (card & 0xFF) { //t55x7
+               clock = GetT55xxClockBit(clock);                        
                if (clock == 0) {
                        Dbprintf("Invalid clock rate: %d", clock);
                        return;
                }
-
                data[0] = clock | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT);
-       } else {
-               data[0] = (0x1F << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | (2 << T5555_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);
        }
 
        WriteT55xx(data, 0, 3);
@@ -1464,6 +1461,14 @@ uint8_t * fwd_write_ptr; //forwardlink bit pointer
 // see EM4469 spec
 //====================================================================
 //--------------------------------------------------------------------
+//  VALUES TAKEN FROM EM4x function: SendForward
+//  START_GAP = 440;       (55*8) cycles at 125Khz (8us = 1cycle)
+//  WRITE_GAP = 128;       (16*8)
+//  WRITE_1   = 256 32*8;  (32*8) 
+
+//  These timings work for 4469/4269/4305 (with the 55*8 above)
+//  WRITE_0 = 23*8 , 9*8  SpinDelayUs(23*8); 
+
 uint8_t Prepare_Cmd( uint8_t cmd ) {
        //--------------------------------------------------------------------