ADD: added the "hf snoop" patch original from @Enio, rearranged by @Etmatrix.

ADD:  added the "t55x7" refactoring by @marshmellow42

common/Makefile.common

@@ -67,7 +67,8 @@ VPATH = . ../common ../fpga ../zlib
 
 INCLUDES = ../include/proxmark3.h ../include/at91sam7s512.h ../include/config_gpio.h ../include/usb_cmd.h $(APP_INCLUDES)
 
-CFLAGS =  -c $(INCLUDE) -Wall -Werror -pedantic -std=c99 $(APP_CFLAGS) -Os
+#-Wunused -Wsign-compare -Wtype-limits -Wuninitialized -Wno-deprecated -Wstrict-aliasing -Wpointer-arith -Wpointer-arith -Wformat-nonliteral -Winit-self -Wparentheses -Wunreachable-code
+CFLAGS =  -c $(INCLUDE) -Wall -Werror -pedantic -Wunused -std=c99 $(APP_CFLAGS) -Os
 LDFLAGS = -nostartfiles -nodefaultlibs -Wl,-gc-sections -n
 
 LIBS = -lgcc

common/lfdemod.c

@@ -282,6 +282,16 @@ int manrawdecode(uint8_t * BitStream, size_t *size, uint8_t invert)
 	return bestErr;
 }
 
+uint32_t manchesterEncode2Bytes(uint16_t datain) {
+	uint32_t output = 0;
+	uint8_t curBit = 0;
+	for (uint8_t i=0; i<16; i++) {
+		curBit = (datain >> (15-i) & 1);
+		output |= (1<<(((15-i)*2)+curBit));
+	}
+	return output;
+}
+
 //by marshmellow
 //encode binary data into binary manchester 
 int ManchesterEncode(uint8_t *BitStream, size_t size)

common/lfdemod.h

@@ -30,6 +30,7 @@ int      DetectStrongAskClock(uint8_t dest[], size_t size, uint8_t high, uint8_t
 uint8_t  Em410xDecode(uint8_t *BitStream, size_t *size, size_t *startIdx, uint32_t *hi, uint64_t *lo);
 int      fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow);
 int      getHiLo(uint8_t *BitStream, size_t size, int *high, int *low, uint8_t fuzzHi, uint8_t fuzzLo);
+uint32_t manchesterEncode2Bytes(uint16_t datain);
 int      ManchesterEncode(uint8_t *BitStream, size_t size);
 int      manrawdecode(uint8_t *BitStream, size_t *size, uint8_t invert);
 int      nrzRawDemod(uint8_t *dest, size_t *size, int *clk, int *invert, int maxErr);

common/protocols.c

@@ -3,13 +3,36 @@
 #include <stdint.h>
 #include <stdarg.h>
 #include "protocols.h"
+
+// ATA55xx shared presets & routines
+uint32_t GetT55xxClockBit(uint32_t clock) {
+	switch (clock) {
+		case 128:
+			return T55x7_BITRATE_RF_128;
+		case 100:
+			return T55x7_BITRATE_RF_100;
+		case 64:
+			return T55x7_BITRATE_RF_64;
+		case 50:
+			return T55x7_BITRATE_RF_50;
+		case 40:
+			return T55x7_BITRATE_RF_40;
+		case 32:
+			return T55x7_BITRATE_RF_32;
+		case 16:
+			return T55x7_BITRATE_RF_16;
+		case 8:
+			return T55x7_BITRATE_RF_8;
+		default:
+			return 0;
+	}
+}
+
 #ifndef ON_DEVICE
 #include "ui.h"
 #define prnt PrintAndLog
-#endif
-
-
 
+// iclass / picopass chip config structures and shared routines
 typedef struct {
 	uint8_t app_limit;      //[8]
 	uint8_t otp[2];         //[9-10]
@@ -31,20 +54,7 @@ typedef struct {
 
 }picopass_hdr;
 
-
-//#define prnt printf
-/*void prnt(char *fmt,...)
-{
-	va_list argptr;
-	va_start(argptr, fmt);
-	vprintf(fmt, argptr);
-	printf("          "); // cleaning prompt
-	va_end(argptr);
-	printf("\n");
-}
-*/
-uint8_t isset(uint8_t val, uint8_t mask)
-{
+uint8_t isset(uint8_t val, uint8_t mask) {
 	return (val & mask);
 }
 
@@ -52,8 +62,7 @@ uint8_t notset(uint8_t val, uint8_t mask){
 	return !(val & mask);
 }
 
-void fuse_config(const picopass_hdr *hdr)
-{
+void fuse_config(const picopass_hdr *hdr) {
 	uint8_t fuses = hdr->conf.fuses;
 
 	if (isset(fuses,FUSE_FPERS))prnt("	Mode: Personalization [Programmable]");
@@ -104,8 +113,7 @@ void getMemConfig(uint8_t mem_cfg, uint8_t chip_cfg, uint8_t *max_blk, uint8_t *
 	}
 }
 
-void mem_app_config(const picopass_hdr *hdr)
-{
+void mem_app_config(const picopass_hdr *hdr) {
 	uint8_t mem = hdr->conf.mem_config;
 	uint8_t chip = hdr->conf.chip_config;
 	uint8_t applimit = hdr->conf.app_limit;
@@ -118,28 +126,25 @@ void mem_app_config(const picopass_hdr *hdr)
 	prnt("	AA1: blocks 06-%02X", applimit);
 	prnt("	AA2: blocks %02X-%02X", applimit+1, max_blk);
 }
-void print_picopass_info(const picopass_hdr *hdr)
-{
+void print_picopass_info(const picopass_hdr *hdr) {
 	fuse_config(hdr);
 	mem_app_config(hdr);
 }
-void printIclassDumpInfo(uint8_t* iclass_dump)
-{
-//	picopass_hdr hdr;
-//	memcpy(&hdr, iclass_dump, sizeof(picopass_hdr));
+void printIclassDumpInfo(uint8_t* iclass_dump) {
 	print_picopass_info((picopass_hdr *) iclass_dump);
 }
 
 /*
-void test()
-{
+void test() {
 	picopass_hdr hdr = {0x27,0xaf,0x48,0x01,0xf9,0xff,0x12,0xe0,0x12,0xff,0xff,0xff,0x7f,0x1f,0xff,0x3c};
 	prnt("Picopass configuration:");
 	print_picopass_info(&hdr);
 }
-int main(int argc, char *argv[])
-{
+int main(int argc, char *argv[]) {
 	test();
 	return 0;
 }
 */
+
+#endif
+//ON_DEVICE

common/protocols.h

@@ -267,4 +267,57 @@ ISO 7816-4 Basic interindustry commands. For command APDU's.
 void printIclassDumpInfo(uint8_t* iclass_dump);
 void getMemConfig(uint8_t mem_cfg, uint8_t chip_cfg, uint8_t *max_blk, uint8_t *app_areas, uint8_t *kb);
 
-#endif // PROTOCOLS_H
+/* T55x7 configuration register definitions */
+#define T55x7_POR_DELAY			0x00000001
+#define T55x7_ST_TERMINATOR		0x00000008
+#define T55x7_PWD			0x00000010
+#define T55x7_MAXBLOCK_SHIFT		5
+#define T55x7_AOR			0x00000200
+#define T55x7_PSKCF_RF_2		0
+#define T55x7_PSKCF_RF_4		0x00000400
+#define T55x7_PSKCF_RF_8		0x00000800
+#define T55x7_MODULATION_DIRECT		0
+#define T55x7_MODULATION_PSK1		0x00001000
+#define T55x7_MODULATION_PSK2		0x00002000
+#define T55x7_MODULATION_PSK3		0x00003000
+#define T55x7_MODULATION_FSK1		0x00004000
+#define T55x7_MODULATION_FSK2		0x00005000
+#define T55x7_MODULATION_FSK1a		0x00006000
+#define T55x7_MODULATION_FSK2a		0x00007000
+#define T55x7_MODULATION_MANCHESTER	0x00008000
+#define T55x7_MODULATION_BIPHASE	0x00010000
+#define T55x7_MODULATION_DIPHASE	0x00018000
+#define T55x7_BITRATE_RF_8		0
+#define T55x7_BITRATE_RF_16		0x00040000
+#define T55x7_BITRATE_RF_32		0x00080000
+#define T55x7_BITRATE_RF_40		0x000C0000
+#define T55x7_BITRATE_RF_50		0x00100000
+#define T55x7_BITRATE_RF_64		0x00140000
+#define T55x7_BITRATE_RF_100		0x00180000
+#define T55x7_BITRATE_RF_128		0x001C0000
+
+/* T5555 (Q5) configuration register definitions */
+#define T5555_ST_TERMINATOR		0x00000001
+#define T5555_MAXBLOCK_SHIFT		0x00000001
+#define T5555_MODULATION_MANCHESTER	0
+#define T5555_MODULATION_PSK1		0x00000010
+#define T5555_MODULATION_PSK2		0x00000020
+#define T5555_MODULATION_PSK3		0x00000030
+#define T5555_MODULATION_FSK1		0x00000040
+#define T5555_MODULATION_FSK2		0x00000050
+#define T5555_MODULATION_BIPHASE	0x00000060
+#define T5555_MODULATION_DIRECT		0x00000070
+#define T5555_INVERT_OUTPUT		0x00000080
+#define T5555_PSK_RF_2			0
+#define T5555_PSK_RF_4			0x00000100
+#define T5555_PSK_RF_8			0x00000200
+#define T5555_USE_PWD			0x00000400
+#define T5555_USE_AOR			0x00000800
+#define T5555_BITRATE_SHIFT		12
+#define T5555_FAST_WRITE		0x00004000
+#define T5555_PAGE_SELECT		0x00008000
+
+uint32_t GetT55xxClockBit(uint32_t clock);
+
+#endif 
+// PROTOCOLS_H