From 1eb7596aad742392643a52fc0935798c618e986b Mon Sep 17 00:00:00 2001
From: "daniel.boteanu" <daniel.boteanu@ef4ab9da-24cd-11de-8aaa-f3a34680c41f>
Date: Sat, 9 Jan 2010 14:59:42 +0000
Subject: [PATCH] Added hitune command for continuously measuring HF antenna
 tuning

---
 armsrc/appmain.c  | 25 +++++++++++++++++++++++++
 client/command.c  |  7 +++++++
 client/prox.h     |  1 +
 include/usb_cmd.h |  5 +++--
 4 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index 237159c9..6edf138b 100644
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -202,6 +202,27 @@ void MeasureAntennaTuning(void)
 	UsbSendPacket((BYTE *)&c, sizeof(c));
 }
 
+void MeasureAntennaTuningHf(void)
+{
+	int vHf = 0;	// in mV
+
+	DbpString("Measuring HF antenna characteristics, press button to exit");
+
+	for (;;) {
+		// Let the FPGA drive the high-frequency antenna around 13.56 MHz.
+		FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+		SpinDelay(20);
+		// Vref = 3300mV, and an 10:1 voltage divider on the input
+		// can measure voltages up to 33000 mV
+		vHf = (33000 * AvgAdc(ADC_CHAN_HF)) >> 10;
+	
+		Dbprintf("%d mV",vHf);
+		if (BUTTON_PRESS()) break;
+	}
+	DbpString("cancelled");
+}
+
+
 void SimulateTagHfListen(void)
 {
 	BYTE *dest = (BYTE *)BigBuf;
@@ -643,6 +664,10 @@ void UsbPacketReceived(BYTE *packet, int len)
 			MeasureAntennaTuning();
 			break;
 
+		case CMD_MEASURE_ANTENNA_TUNING_HF:
+			MeasureAntennaTuningHf();
+			break;
+
 		case CMD_LISTEN_READER_FIELD:
 			ListenReaderField(c->arg[0]);
 			break;
diff --git a/client/command.c b/client/command.c
index 9bfb18f2..5d27870e 100644
--- a/client/command.c
+++ b/client/command.c
@@ -93,6 +93,12 @@ static void CmdTune(char *str)
 	SendCommand(&c);
 }
 
+static void CmdHiTune(char *str)
+{
+	UsbCommand c={CMD_MEASURE_ANTENNA_TUNING_HF};
+	SendCommand(&c);
+}
+
 static void CmdHi15read(char *str)
 {
 	UsbCommand c={CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_15693};
@@ -2825,6 +2831,7 @@ static struct {
 /* low-level hardware control */
 	{"fpgaoff",			CmdFPGAOff,			0, "Set FPGA off"},
 	{"tune",			CmdTune,			0, "Measure antenna tuning"},
+	{"hitune",			CmdHiTune,			0, "Continuously measure HF antenna tuning"},
 	{"readmem",			CmdReadmem,			0, "[address] -- Read memory at decimal address from flash"},
 	{"reset",			CmdReset,			0, "Reset the Proxmark3"},
 	{"setlfdivisor",	CmdSetDivisor,		0, "<19 - 255> -- Drive LF antenna at 12Mhz/(divisor+1)"},
diff --git a/client/prox.h b/client/prox.h
index 10429dc1..4742ba9a 100644
--- a/client/prox.h
+++ b/client/prox.h
@@ -44,6 +44,7 @@ int GetClock(char *str, int peak);
 static void CmdHIDdemodFSK(char *str);
 static void Cmdmanchestermod(char *str);
 static void CmdTune(char *str);
+static void CmdHiTune(char *str);
 static void CmdHi15read(char *str);
 static void CmdHi14read(char *str);
 static void CmdSri512read(char *str);
diff --git a/include/usb_cmd.h b/include/usb_cmd.h
index 9e2acf6e..71f0221c 100644
--- a/include/usb_cmd.h
+++ b/include/usb_cmd.h
@@ -84,8 +84,9 @@ typedef struct {
 
 // For measurements of the antenna tuning
 #define CMD_MEASURE_ANTENNA_TUNING			0x0400
-#define CMD_MEASURED_ANTENNA_TUNING			0x0401
-#define CMD_LISTEN_READER_FIELD				0x0402
+#define CMD_MEASURE_ANTENNA_TUNING_HF			0x0401
+#define CMD_MEASURED_ANTENNA_TUNING			0x0410
+#define CMD_LISTEN_READER_FIELD				0x0420
 
 // For direct FPGA control
 #define CMD_FPGA_MAJOR_MODE_OFF				0x0500
-- 
2.39.2