Merge pull request #250 from pwpiwi/fix_mfkey

[proxmark3-svn] / armsrc / lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 72ab360e7315e1b61132d3357369718990f2e025..75aa134240aedffa1eb5b73f4482a76920ef637f 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -1571,27 +1571,27 @@ 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 +1618,7 @@ 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 +1627,9 @@ 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(30,TRUE);
+       DoPartialAcquisition(20, true, 6000);
        
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
        LED_A_OFF();
@@ -1645,6 +1646,7 @@ 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 +1658,11 @@ void EM4xWriteWord(uint32_t flag, uint32_t Data, uint32_t Pwd) {
        SendForward(fwd_bit_count);
 
        //Wait for write to complete
-       SpinDelayUs(8000);
+       //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();