From d6a120a25ba4838c3991643e026fc10ef821e42a Mon Sep 17 00:00:00 2001
From: Martin Holst Swende <martin@swende.se>
Date: Sun, 30 Nov 2014 22:30:36 +0100
Subject: [PATCH] Added Enios cool tuning-trick (LF) from forum-post:
 http://www.proxmark.org/forum/viewtopic.php?pid=13060#p13060

---
 armsrc/appmain.c |  2 +-
 client/cmddata.c | 21 +++++++++++++++++++++
 client/cmddata.h |  1 +
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index a3f507d6..8f676c8e 100644
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -203,7 +203,7 @@ void MeasureAntennaTuning(void)
 
   LED_B_ON();
 	DbpString("Measuring antenna characteristics, please wait...");
-	memset(dest,0,sizeof(FREE_BUFFER_SIZE));
+	memset(dest,0,FREE_BUFFER_SIZE);
 
 /*
  * Sweeps the useful LF range of the proxmark from
diff --git a/client/cmddata.c b/client/cmddata.c
index 7d9ec1b7..b34ed8e0 100644
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -479,6 +479,26 @@ int CmdSamples(const char *Cmd)
   return 0;
 }
 
+int CmdTuneSamples(const char *Cmd)
+{
+  int cnt = 0;
+  int n = 255;
+  uint8_t got[255];
+
+  PrintAndLog("Reading %d samples\n", n);
+  GetFromBigBuf(got,n,7256); // armsrc/apps.h: #define FREE_BUFFER_OFFSET 7256
+  WaitForResponse(CMD_ACK,NULL);
+  for (int j = 0; j < n; j++) {
+    GraphBuffer[cnt++] = ((int)got[j]) - 128;
+  }
+  
+  PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n");
+  PrintAndLog("\n");
+  GraphTraceLen = n;
+  RepaintGraphWindow();
+  return 0;
+}
+
 int CmdLoad(const char *Cmd)
 {
   FILE *f = fopen(Cmd, "r");
@@ -906,6 +926,7 @@ static command_t CommandTable[] =
   {"norm",          CmdNorm,            1, "Normalize max/min to +/-500"},
   {"plot",          CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},
   {"samples",       CmdSamples,         0, "[512 - 40000] -- Get raw samples for graph window"},
+  {"tune",          CmdTuneSamples,     0, "Get hw tune samples for graph window"},
   {"save",          CmdSave,            1, "<filename> -- Save trace (from graph window)"},
   {"scale",         CmdScale,           1, "<int> -- Set cursor display scale"},
   {"threshold",     CmdThreshold,       1, "<threshold> -- Maximize/minimize every value in the graph window depending on threshold"},
diff --git a/client/cmddata.h b/client/cmddata.h
index 716c9c39..8dcefc30 100644
--- a/client/cmddata.h
+++ b/client/cmddata.h
@@ -35,6 +35,7 @@ int CmdManchesterMod(const char *Cmd);
 int CmdNorm(const char *Cmd);
 int CmdPlot(const char *Cmd);
 int CmdSamples(const char *Cmd);
+int CmdTuneSamples(const char *Cmd);
 int CmdSave(const char *Cmd);
 int CmdScale(const char *Cmd);
 int CmdThreshold(const char *Cmd);
-- 
2.39.2