adjust t55x7 testmode write timing

[proxmark3-svn] / armsrc / lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 35cf90cad25abd63f8bc60015beb6ef058733e75..f70ea896f1d040e061326692278ee4d8f03391fc 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -1161,7 +1161,8 @@ void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg
        // Std Opcode 10
        T55xxWriteBit(testMode ? 0 : 1);
        T55xxWriteBit(testMode ? 1 : Page); //Page 0
-       if (PwdMode){
+
+       if (PwdMode) {
                // Send Pwd
                for (i = 0x80000000; i != 0; i >>= 1)
                        T55xxWriteBit(Pwd & i);
@@ -1181,22 +1182,19 @@ void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg
        // so wait a little more)
 
        // "there is a clock delay before programming" 
-       //  - programming takes ~5.6ms for t5577 ~18ms for E5550
+       //  - 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 t55x7 vs e5550 (or q5) marshmellow...
+       //  but we need to know we are dealing with t5577 vs t5567 vs e5550 (or q5) marshmellow...
        if (testMode) {
-               // Turn field on to read the response
-               TurnReadLFOn(READ_GAP);
-
-               // Acquisition
-               // Now do the acquisition
-               // Now do the acquisition
-               DoPartialAcquisition(20, true, 12000);
+               //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); 
 
-               //doT55x7Acquisition(12000);
        } 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 
@@ -1205,6 +1203,9 @@ void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg
                // 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);
        LED_A_OFF();
@@ -1222,7 +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);
@@ -1257,7 +1258,9 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
                        T55xxWriteBit(Block & i);               
 
        // Turn field on to read the response
-       TurnReadLFOn(135*8);
+       // 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
        // Now do the acquisition