Add continuous mode for hf 14a reader

client/src/cmdhf14a.c

@@ -27,6 +27,10 @@
 #include "crc16.h"
 #include "util_posix.h"  // msclock
 #include "aidsearch.h"
+#include "proxgui.h"
+#include "cmddata.h"
+#include "graph.h"
+#include "fpga.h"
 
 bool APDUInFramingEnable = true;
 
@@ -265,6 +269,7 @@ static int usage_hf_14a_reader(void) {
     PrintAndLogEx(NORMAL, "       s    silent (no messages)");
     PrintAndLogEx(NORMAL, "       x    just drop the signal field");
     PrintAndLogEx(NORMAL, "       3    ISO14443-3 select only (skip RATS)");
+    PrintAndLogEx(NORMAL, "       @    continuous mode. Updates hf plot as well");
     return PM3_SUCCESS;
 }
 
@@ -475,9 +480,9 @@ int Hf14443_4aGetCardData(iso14a_card_select_t *card) {
 static int CmdHF14AReader(const char *Cmd) {
 
     uint32_t cm = ISO14A_CONNECT;
-    bool disconnectAfter = true, silent = false;
+    bool disconnectAfter = true, silent = false, continuous = false;
     int cmdp = 0;
-
+    int res = PM3_SUCCESS;
     while (param_getchar(Cmd, cmdp) != 0x00) {
         switch (tolower(param_getchar(Cmd, cmdp))) {
             case 'h':
@@ -494,6 +499,9 @@ static int CmdHF14AReader(const char *Cmd) {
             case 'x':
                 cm &= ~ISO14A_CONNECT;
                 break;
+            case '@':
+                continuous = true;
+                break;
             default:
                 PrintAndLogEx(WARNING, "Unknown command.");
                 return PM3_EINVARG;
@@ -503,7 +511,10 @@ static int CmdHF14AReader(const char *Cmd) {
 
     if (!disconnectAfter)
         cm |= ISO14A_NO_DISCONNECT;
-
+    if (continuous) {
+        PrintAndLogEx(INFO, "Press " _GREEN_("Enter") " to exit");
+    }
+    do {
         clearCommandBuffer();
         SendCommandMIX(CMD_HF_ISO14443A_READER, cm, 0, 0, NULL, 0);
 
@@ -512,7 +523,8 @@ static int CmdHF14AReader(const char *Cmd) {
             if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)) {
                 if (!silent) PrintAndLogEx(WARNING, "iso14443a card select failed");
                 DropField();
-            return PM3_ESOFT;
+                res = PM3_ESOFT;
+                goto plot;
             }
 
             iso14a_card_select_t card;
@@ -529,16 +541,20 @@ static int CmdHF14AReader(const char *Cmd) {
             if (select_status == 0) {
                 if (!silent) PrintAndLogEx(WARNING, "iso14443a card select failed");
                 DropField();
-            return PM3_ESOFT;
+                res = PM3_ESOFT;
+                goto plot;
             }
 
             if (select_status == 3) {
+                if (!(silent && continuous)) {
                     PrintAndLogEx(INFO, "Card doesn't support standard iso14443-3 anticollision");
                     PrintAndLogEx(SUCCESS, "ATQA: %02x %02x", card.atqa[1], card.atqa[0]);
-            DropField();
-            return PM3_ESOFT;
                 }
-
+                DropField();
+                res = PM3_ESOFT;
+                goto plot;
+            }
+            if (!(silent && continuous)) {
                 PrintAndLogEx(SUCCESS, " UID: " _GREEN_("%s"), sprint_hex(card.uid, card.uidlen));
                 PrintAndLogEx(SUCCESS, "ATQA: " _GREEN_("%02x %02x"), card.atqa[1], card.atqa[0]);
                 PrintAndLogEx(SUCCESS, " SAK: " _GREEN_("%02x [%" PRIu64 "]"), card.sak, resp.oldarg[0]);
@@ -546,17 +562,45 @@ static int CmdHF14AReader(const char *Cmd) {
                 if (card.ats_len >= 3) { // a valid ATS consists of at least the length byte (TL) and 2 CRC bytes
                     PrintAndLogEx(SUCCESS, " ATS: " _GREEN_("%s"), sprint_hex(card.ats, card.ats_len));
                 }
-
+            }
             if (!disconnectAfter) {
                 if (!silent) PrintAndLogEx(SUCCESS, "Card is selected. You can now start sending commands");
             }
         }
+plot:
+        if (continuous) {
+            uint8_t buf[FPGA_TRACE_SIZE];
 
+            PacketResponseNG response;
+            if (!GetFromDevice(FPGA_MEM, buf, FPGA_TRACE_SIZE, 0, NULL, 0, &response, 4000, true)) {
+                PrintAndLogEx(WARNING, "timeout while waiting for reply.");
+                return PM3_ETIMEOUT;
+            }
+
+            for (size_t i = 0; i < FPGA_TRACE_SIZE; i++) {
+                GraphBuffer[i] = ((int)buf[i]) - 127;
+            }
+
+            GraphTraceLen = FPGA_TRACE_SIZE;
+
+            // remove signal offset
+            CmdHpf("");
+
+            setClockGrid(0, 0);
+            DemodBufferLen = 0;
+            RepaintGraphWindow();
+        }
+        if (kbd_enter_pressed()) {
+            break;
+        }
+    } while (continuous);
     if (disconnectAfter) {
         if (!silent) PrintAndLogEx(INFO, "field dropped.");
     }
-
+    if (continuous)
         return PM3_SUCCESS;
+    else
+        return res;
 }
 
 static int CmdHF14AInfo(const char *Cmd) {