From 33a1fe9636ddc00cedfec34e0d8a77899ca4494c Mon Sep 17 00:00:00 2001
From: marshmellow42 <marshmellowrf@gmail.com>
Date: Wed, 22 Feb 2017 10:41:40 -0500
Subject: [PATCH 1/1] small text adjustments plus...

small improvement to fsk clock detect + fixed a bug where it would
default to rf/16 when it couldn't find a valid one...
---
 armsrc/lfops.c     |  6 +++---
 client/cmdlfem4x.c | 13 ++++++++-----
 common/lfdemod.c   |  7 +++++--
 3 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 0bbd62c2..d79c75a0 100644
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -1626,9 +1626,9 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 	fwd_bit_count += Prepare_Addr( Address );
 
 	SendForward(fwd_bit_count);
-	SpinDelayUs(700);
+	SpinDelayUs(400);
 	// Now do the acquisition
-	DoPartialAcquisition(20, true, 5500);
+	DoPartialAcquisition(20, true, 6000);
 	
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
 	LED_A_OFF();
@@ -1660,7 +1660,7 @@ void EM4xWriteWord(uint32_t flag, uint32_t Data, uint32_t Pwd) {
 
 	SpinDelayUs(6500);
 	//Capture response if one exists
-	DoPartialAcquisition(20, true, 5500);
+	DoPartialAcquisition(20, true, 6000);
 
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
 	LED_A_OFF();
diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c
index d1245306..0788b138 100644
--- a/client/cmdlfem4x.c
+++ b/client/cmdlfem4x.c
@@ -675,7 +675,7 @@ int EM4x05ReadWord(uint8_t addr, uint32_t pwd, bool usePwd) {
 	uint32_t wordData = 0;
 	int success = EM4x05ReadWord_ext(addr, pwd, usePwd, &wordData);
 	if (success == 1)
-		PrintAndLog(" Got Address %02d | %08X",addr,wordData);
+		PrintAndLog("%s Address %02d | %08X", (addr>13) ? "Lock":" Got",addr,wordData);
 	else
 		PrintAndLog("Read Address %02d | failed",addr);
 
@@ -859,11 +859,11 @@ void printEM4x05config(uint32_t wordData) {
 	}
 	PrintAndLog("ConfigWord: %08X (Word 4)\n", wordData);
 	PrintAndLog("Config Breakdown:", wordData);
-	PrintAndLog(" Data Rate:  %02X | RF/%u", wordData & 0x3F, datarate);
+	PrintAndLog(" Data Rate:  %02u | RF/%u", wordData & 0x3F, datarate);
 	PrintAndLog("   Encoder:   %u | %s", encoder, enc);
 	PrintAndLog("    PSK CF:   %u | %s", PSKcf, cf);
 	PrintAndLog("     Delay:   %u | %s", delay, cdelay);
-	PrintAndLog(" LastWordR:  %02u | Address of last default word read", LWR);
+	PrintAndLog(" LastWordR:  %02u | Address of last word for default read", LWR);
 	PrintAndLog(" ReadLogin:   %u | Read Login is %s", (wordData & 0x40000)>>18, (wordData & 0x40000) ? "Required" : "Not Required");	
 	PrintAndLog("   ReadHKL:   %u | Read Housekeeping Words Login is %s", (wordData & 0x80000)>>19, (wordData & 0x80000) ? "Required" : "Not Required");	
 	PrintAndLog("WriteLogin:   %u | Write Login is %s", (wordData & 0x100000)>>20, (wordData & 0x100000) ? "Required" : "Not Required");	
@@ -898,8 +898,11 @@ void printEM4x05info(uint8_t chipType, uint8_t cap, uint16_t custCode, uint32_t
 }
 
 void printEM4x05ProtectionBits(uint32_t wordData) {
-	for (uint8_t i = 0; i < 14; i++) {
-		PrintAndLog("      Word:  %02u | %s", i, (((1 << i) & wordData ) || i < 2) ? "Is Locked" : "Is Not Locked");
+	for (uint8_t i = 0; i < 15; i++) {
+		PrintAndLog("      Word:  %02u | %s", i, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked");
+		if (i==14) {
+			PrintAndLog("      Word:  %02u | %s", i+1, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked");
+		}
 	}
 }
 
diff --git a/common/lfdemod.c b/common/lfdemod.c
index 406b0445..e9f19311 100644
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -1343,7 +1343,10 @@ uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fc
 			continue;		
 		// else new peak 
 		// if we got less than the small fc + tolerance then set it to the small fc
-		if (fcCounter < fcLow+fcTol) 
+		// if it is inbetween set it to the last counter
+		if (fcCounter < fcHigh && fcCounter > fcLow)
+			fcCounter = lastFCcnt;
+		else if (fcCounter < fcLow+fcTol) 
 			fcCounter = fcLow;
 		else //set it to the large fc
 			fcCounter = fcHigh;
@@ -1409,7 +1412,7 @@ uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fc
 		}
 	}
 
-	if (ii<0) return 0; // oops we went too far
+	if (ii<2) return 0; // oops we went too far
 
 	return clk[ii];
 }
-- 
2.39.5