added @broken_bad's imp of showing T555/Q5 trace data. (with my modifications ;) )

[proxmark3-svn] / armsrc / lfsampling.c

diff --git a/armsrc/lfsampling.c b/armsrc/lfsampling.c
index 6eecf4075ebf82a94cd6324e3afb4721e76376e2..7d55fa3cfae938b11edf054422ff461cd6f74869 100644 (file)
--- a/armsrc/lfsampling.c
+++ b/armsrc/lfsampling.c
@@ -254,7 +254,8 @@ uint32_t SnoopLF() {
 **/
 void doT55x7Acquisition(size_t sample_size) {
 
 **/
 void doT55x7Acquisition(size_t sample_size) {
 

-       #define T55xx_READ_UPPER_THRESHOLD 128+40  // 40 grph
+       #define T55xx_READ_UPPER_THRESHOLD 128+60  // 60 grph
+       #define T55xx_READ_LOWER_THRESHOLD 128-60  // -60 grph

        #define T55xx_READ_TOL   5
 
        uint8_t *dest = BigBuf_get_addr();
        #define T55xx_READ_TOL   5
 
        uint8_t *dest = BigBuf_get_addr();


@@ -266,10 +267,11 @@ void doT55x7Acquisition(size_t sample_size) {
        uint16_t i = 0;
        bool startFound = false;
        bool highFound = false;
        uint16_t i = 0;
        bool startFound = false;
        bool highFound = false;

+       bool lowFound = false;

        uint8_t curSample = 0;
        uint8_t curSample = 0;

-       uint8_t firstSample = 0;
+       uint8_t lastSample = 0;

        uint16_t skipCnt = 0;
        uint16_t skipCnt = 0;

-       while(!BUTTON_PRESS() && !usb_poll_validate_length() && skipCnt<1000) {
+       while(!BUTTON_PRESS() && !usb_poll_validate_length() && skipCnt < 1000 && (i < bufsize) ) {

                WDT_HIT();              
                if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
                        AT91C_BASE_SSC->SSC_THR = 0x43;
                WDT_HIT();              
                if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
                        AT91C_BASE_SSC->SSC_THR = 0x43;


@@ -281,24 +283,33 @@ void doT55x7Acquisition(size_t sample_size) {
                
                        // skip until the first high sample above threshold
                        if (!startFound && curSample > T55xx_READ_UPPER_THRESHOLD) {
                
                        // skip until the first high sample above threshold
                        if (!startFound && curSample > T55xx_READ_UPPER_THRESHOLD) {

-                               if (curSample > firstSample) 
-                                       firstSample = curSample;
+                               //if (curSample > lastSample) 
+                               //      lastSample = curSample;

                                highFound = true;
                        } else if (!highFound) {
                                skipCnt++;
                                continue;
                        }
                                highFound = true;
                        } else if (!highFound) {
                                skipCnt++;
                                continue;
                        }

+                       // skip until the first Low sample below threshold
+                       if (!startFound && curSample < T55xx_READ_LOWER_THRESHOLD) {
+                               //if (curSample > lastSample) 
+                               lastSample = curSample;
+                               lowFound = true;
+                       } else if (!lowFound) {
+                               skipCnt++;
+                               continue;
+                       }
+

 
                        // skip until first high samples begin to change
 
                        // skip until first high samples begin to change

-                       if (startFound || curSample < firstSample-T55xx_READ_TOL){
+                       if (startFound || curSample > T55xx_READ_LOWER_THRESHOLD+T55xx_READ_TOL){

                                // if just found start - recover last sample
                                if (!startFound) {
                                // if just found start - recover last sample
                                if (!startFound) {

-                                       dest[i++] = firstSample;
-                               startFound = true;
+                                       dest[i++] = lastSample;
+                                       startFound = true;

                                }
                                // collect samples
                                dest[i++] = curSample;
                                }
                                // collect samples
                                dest[i++] = curSample;

-                               if (i >= bufsize-1) break;

                        }
                }
        }
                        }
                }
        }