CHG: @marshmellow42 's changes to lfops.c /lfsampling.c

[proxmark3-svn] / armsrc / lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index a7b8d819109cee3c1baa89de8b803ce33c54644b..20e4efd3c7d7a5b2acb9bde3e4df325afe84eb1f 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -326,7 +326,6 @@ void AcquireTiType(void)
 // if not provided a valid crc will be computed from the data and written.
 void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
 {
-       StartTicks();
        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        if(crc == 0) {
                crc = update_crc16(crc, (idlo)&0xff);
@@ -347,8 +346,10 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
        // whether we're modulating the antenna (high)
        // or listening to the antenna (low)
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU);
+       StartTicks();
+       
        LED_A_ON();
-
+       
        // steal this pin from the SSP and use it to control the modulation
        AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
        AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
@@ -361,7 +362,7 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
        // then write 80 bits of data (or 64 bit data + 16 bit crc if you prefer)
        // finally end with 0x0300 (write frame)
        // all data is sent lsb first
-       // finish with 15ms programming time
+       // finish with 50ms programming time
 
        // modulate antenna
        HIGH(GPIO_SSC_DOUT);
@@ -399,7 +400,8 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
        int i = 0;
        uint8_t *buf = BigBuf_get_addr();
 
-       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU);
+       //FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
        //FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_READER_FIELD);
        //FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_TOGGLE_MODE );
 
@@ -420,8 +422,9 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
        AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
 
        // power on antenna
-       // OPEN_COIL();
-       // SpinDelay(50);
+       OPEN_COIL();
+       // charge time
+       WaitMS(50);
                
        for(;;) {
                WDT_HIT();
@@ -1699,7 +1702,6 @@ void EM4xLogin(uint32_t pwd) {
 void EM4xReadWord(uint8_t addr, uint32_t pwd, uint8_t usepwd) {
 
        LED_A_ON();
-
        uint8_t len;
        
        //clear buffer now so it does not interfere with timing later
@@ -1719,7 +1721,9 @@ void EM4xReadWord(uint8_t addr, uint32_t pwd, uint8_t usepwd) {
 
        SendForward(len);
 
-       DoAcquisition_default(0, TRUE);
+       WaitUS(400);
+       // Now do the acquisition
+       DoPartialAcquisition(20, true, 6000);
 
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        cmd_send(CMD_ACK,0,0,0,0,0);
@@ -1753,10 +1757,10 @@ void EM4xWriteWord(uint32_t flag, uint32_t data, uint32_t pwd) {
        SendForward(len);
 
        //Wait 20ms for write to complete?
-       WaitMS(10);
+       WaitMS(6);
 
        //Capture response if one exists
-       DoAcquisition_default(20, TRUE);
+       DoPartialAcquisition(20, true, 6000);
        
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        cmd_send(CMD_ACK,0,0,0,0,0);