New protocol FrSkyL: LR12

Model: L9R RX
2 sub protocols: LR12 and LR12_6CH

Multiprotocol/Convert.ino

@@ -143,10 +143,10 @@ uint16_t convert_channel_frsky(uint8_t num)
 
 // 0-2047, 0 = 817, 1024 = 1500, 2047 = 2182
 //64=860,1024=1500,1984=2140//Taranis 125%
-static uint16_t  __attribute__((unused)) FrSkyX_scaleForPXX( uint8_t i )
+static uint16_t  __attribute__((unused)) FrSkyX_scaleForPXX( uint8_t i, uint8_t num_chan=8)
 {	//mapped 860,2140(125%) range to 64,1984(PXX values);
 	uint16_t chan_val=convert_channel_frsky(i)-1226;
-	if(i>7) chan_val|=2048;   // upper channels offset
+	if(i>=num_chan) chan_val|=2048;   // upper channels offset
 	return chan_val;
 }
 

Multiprotocol/FrSkyDVX_common.ino

@@ -17,7 +17,7 @@
 /**  FrSky D and X routines  **/
 /******************************/
 
-#if defined(FRSKYX_CC2500_INO) || defined(FRSKY_RX_CC2500_INO) || defined(FRSKYR9_SX1276_INO)
+#if defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO) || defined(FRSKY_RX_CC2500_INO) || defined(FRSKYR9_SX1276_INO)
 //**CRC**
 const uint16_t PROGMEM FrSkyX_CRC_Short[]={
 	0x0000, 0x1189, 0x2312, 0x329B, 0x4624, 0x57AD, 0x6536, 0x74BF,
@@ -29,9 +29,9 @@ static uint16_t __attribute__((unused)) FrSkyX_CRCTable(uint8_t val)
 	val /= 16 ;
 	return word ^ (0x1081 * val) ;
 }
-uint16_t FrSkyX_crc(uint8_t *data, uint8_t len)
+uint16_t FrSkyX_crc(uint8_t *data, uint8_t len, uint8_t init=0)
 {
-	uint16_t crc = 0;
+	uint16_t crc = init;
 	for(uint8_t i=0; i < len; i++)
 		crc = (crc<<8) ^ FrSkyX_CRCTable((uint8_t)(crc>>8) ^ *data++);
 	return crc;
@@ -39,7 +39,7 @@ uint16_t FrSkyX_crc(uint8_t *data, uint8_t len)
 #endif
 
 
-#if defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO)
+#if defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYX_CC2500_INO)
 enum {
 	FRSKY_BIND		= 0,
 	FRSKY_BIND_DONE	= 1000,
@@ -122,7 +122,7 @@ void Frsky_init_clone(void)
 /******************************/
 /**  FrSky V, D and X routines  **/
 /******************************/
-#if defined(FRSKYV_CC2500_INO) || defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO)
+#if defined(FRSKYV_CC2500_INO) || defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO)
 	const PROGMEM uint8_t FRSKY_common_startreg_cc2500_conf[]= {
 		 CC2500_02_IOCFG0 ,		
 		 CC2500_00_IOCFG2 ,
@@ -190,7 +190,7 @@ void Frsky_init_clone(void)
 		/*15_DEVIATN*/ 	 0x42  };
 	#endif
 
-	#if defined(FRSKYX_CC2500_INO)
+	#if defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO)
 		const PROGMEM uint8_t FRSKYX_cc2500_conf[]= {
 	//FRSKYX
 		/*02_IOCFG0*/  	 0x06 ,
@@ -232,6 +232,26 @@ void Frsky_init_clone(void)
 		/*13_MDMCFG1*/ 	 0x23 ,
 		/*14_MDMCFG0*/ 	 0x7a ,
 		/*15_DEVIATN*/ 	 0x53  };
+		const PROGMEM uint8_t FRSKYL_cc2500_conf[]= {
+		/*02_IOCFG0*/  	 0x02 ,
+		/*00_IOCFG2*/  	 0x02 ,
+		/*17_MCSM1*/   	 0x0C ,
+		/*18_MCSM0*/   	 0x18 ,
+		/*06_PKTLEN*/  	 0xFF ,
+		/*07_PKTCTRL1*/	 0x00 ,
+		/*08_PKTCTRL0*/	 0x02 ,
+		/*3E_PATABLE*/ 	 0xFE ,
+		/*0B_FSCTRL1*/ 	 0x0A ,
+		/*0C_FSCTRL0*/ 	 0x00 ,
+		/*0D_FREQ2*/   	 0x5c ,
+		/*0E_FREQ1*/   	 0x76 ,
+		/*0F_FREQ0*/   	 0x27 ,
+		/*10_MDMCFG4*/ 	 0x5C ,
+		/*11_MDMCFG3*/ 	 0x3B ,
+		/*12_MDMCFG2*/ 	 0x00 ,
+		/*13_MDMCFG1*/ 	 0x03 ,
+		/*14_MDMCFG0*/ 	 0x7A ,
+		/*15_DEVIATN*/ 	 0x47  };
 	#endif
 
 	const PROGMEM uint8_t FRSKY_common_end_cc2500_conf[][2]= {
@@ -276,7 +296,7 @@ void Frsky_init_clone(void)
 	}
 #endif
 
-#if defined(FRSKYX_CC2500_INO) || defined(FRSKYX2_CC2500_INO)
+#if defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO)
 uint8_t FrSkyX_chanskip;
 uint8_t FrSkyX_TX_Seq, FrSkyX_TX_IN_Seq;
 uint8_t FrSkyX_RX_Seq ;
@@ -302,7 +322,10 @@ static void __attribute__((unused)) FrSkyX_set_start(uint8_t ch )
 
 static void __attribute__((unused)) FrSkyX_init()
 {
-	FRSKY_init_cc2500((sub_protocol&2)?FRSKYXEU_cc2500_conf:FRSKYX_cc2500_conf); // LBT or FCC
+	if(protocol==PROTO_FRSKYL)
+		FRSKY_init_cc2500(FRSKYL_cc2500_conf);
+	else
+		FRSKY_init_cc2500((sub_protocol&2)?FRSKYXEU_cc2500_conf:FRSKYX_cc2500_conf); // LBT or FCC
 	if(protocol==PROTO_FRSKYX2)
 	{
 		CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x05);		// Enable CRC

Multiprotocol/FrSkyL_cc2500.ino

@@ -0,0 +1,262 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#if defined(FRSKYL_CC2500_INO)
+
+#include "iface_cc2500.h"
+
+#define FRSKYL_FORCE_ID
+#define FRSKYL_PACKET_LEN	256
+#define FRSKYL_PERIOD		18000
+
+uint8_t FrSkyL_buffer[FRSKYL_PACKET_LEN];
+
+static void __attribute__((unused)) FrSkyL_build_bind_packet()
+{
+	//Header
+	packet[0] = 0x4E;				// Unknown but constant
+	//Bind packet
+	memset(&packet[1],0x00,3);
+	//ID
+	packet[4 ] = rx_tx_addr[3];		// ID
+	packet[5 ] = rx_tx_addr[2];		// ID
+	int idx = ((state -FRSKY_BIND) % 10) * 5;
+	packet[6 ] = idx;
+	packet[7 ] = hopping_frequency[idx++];
+	packet[8 ] = hopping_frequency[idx++];
+	packet[9 ] = hopping_frequency[idx++];
+	packet[10] = hopping_frequency[idx++];
+	packet[11] = hopping_frequency[idx++];
+	packet[12] = rx_tx_addr[1];		// ID or hw ver?
+	packet[13] = RX_num;
+	packet[14] = 0x00;				// Unknown but constant
+	//CRC
+	uint16_t lcrc = FrSkyX_crc(&packet[1], 14);
+	packet[15] = lcrc >> 8;
+	packet[16] = lcrc;
+	//Debug
+/*	debug("Bind:");
+	for(uint8_t i=0;i<17;i++)
+		debug(" %02X",packet[i]);
+	debugln("");*/
+}
+
+static void __attribute__((unused)) FrSkyL_build_packet()
+{
+	static uint8_t chan_offset=0;
+	uint16_t chan_0,chan_1;
+
+	//Header
+	packet[0 ] = 0x4E;				// Unknown but constant
+	//ID
+	packet[1 ] = rx_tx_addr[3];		// ID
+	packet[2 ] = rx_tx_addr[2];		// ID
+	packet[3 ] = rx_tx_addr[1];		// ID or hw ver?
+	//skip_hop
+	packet[4 ] = (FrSkyX_chanskip<<6)|hopping_frequency_no; 
+	packet[5 ] = FrSkyX_chanskip>>2;
+	//Channels
+	uint8_t startChan = chan_offset;
+	for(uint8_t i = 0; i <9 ; i+=3)
+	{//9 bytes of channel data
+		chan_0 = FrSkyX_scaleForPXX(startChan,6);
+		startChan++;
+		//
+		chan_1 = FrSkyX_scaleForPXX(startChan,6);
+		startChan++;
+		//
+		packet[6+i] = lowByte(chan_0);									//3 bytes*4
+		packet[6+i+1]=(((chan_0>>8) & 0x0F)|(chan_1 << 4));
+		packet[6+i+2]=chan_1>>4;
+	}
+	if(sub_protocol & 0x01 )											//6ch mode only??
+		chan_offset = 0 ;
+	else
+		chan_offset^=0x06;
+	//CRC
+	uint16_t lcrc = FrSkyX_crc(&packet[1], 14, RX_num);
+	packet[15] = lcrc >> 8;
+	packet[16] = lcrc;
+	//Debug
+	/*debug("Norm:");
+	for(uint8_t i=0;i<17;i++)
+		debug(" %02X",packet[i]);
+	debugln("");*/
+}
+
+static void __attribute__((unused))  FrSkyL_encode_packet(bool type)
+{
+	#define FRSKYL_BIT0 0xED
+	#define FRSKYL_BIT1 0x712
+	
+	uint32_t bits = 0;
+	uint8_t bitsavailable = 0;
+	uint8_t idx = 0,len=6;
+	if(type)
+	{//just replace packet content
+		idx=66;
+		len=17;
+	}
+
+	//debugln("Encode:");
+	for (uint8_t i = 0; i < len; i++)
+	{
+		uint8_t tmp=packet[i];
+		//debug("%02X =",tmp);
+		for(uint8_t j=0;j<8;j++)
+		{
+			bits <<= 11;
+			if(tmp&0x01)
+				bits |= FRSKYL_BIT1;
+			else
+				bits |= FRSKYL_BIT0;
+			tmp >>=1;
+			bitsavailable += 11;
+			while (bitsavailable >= 8) {
+				uint32_t bits_tmp=bits>>(bitsavailable-8);
+				bitsavailable -= 8;
+				FrSkyL_buffer[idx] = bits_tmp;
+				//debug(" %02X",FrSkyL_buffer[idx]);
+				idx++;
+			}
+		}
+		//debugln("");
+	}
+}
+
+uint16_t ReadFrSkyL()
+{
+	static uint8_t written=0, send=0;
+	switch(send)
+	{
+		case 1:
+			CC2500_Strobe(CC2500_SIDLE);
+			CC2500_Strobe(CC2500_SFTX);
+			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, FrSkyL_buffer, 64);
+			CC2500_Strobe(CC2500_STX);
+			CC2500_Strobe(CC2500_SIDLE);	// This cancels the current transmission???
+			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, FrSkyL_buffer, 64);
+			CC2500_Strobe(CC2500_SFTX);		// This just clears what we've written???
+			CC2500_Strobe(CC2500_STX);
+			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, FrSkyL_buffer, 64);
+			written=64;
+			send++;
+			return 2623;
+		case 2:
+			len=FRSKYL_PACKET_LEN-written;
+			if(len>31)
+				len=31;
+			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, FrSkyL_buffer+written, len);
+			written+=len;
+			if(len!=31)			//everything has been sent
+			{
+				send=0;
+				return 2936;
+			}
+			return 1984;
+	}
+	
+	switch(state)
+	{	
+		default: 
+			//Bind
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(9000);
+			#endif
+			FrSkyX_set_start(47);
+			CC2500_SetPower();
+			CC2500_Strobe(CC2500_SFRX);
+			//		
+			FrSkyL_build_bind_packet();
+			FrSkyL_encode_packet(true);
+
+			CC2500_Strobe(CC2500_SIDLE);
+			if(IS_BIND_DONE)
+				state = FRSKY_BIND_DONE;
+			else
+			{
+				state++;
+				send=1;
+			}
+			return 537;
+		case FRSKY_BIND_DONE:
+			FrSkyX_initialize_data(0);
+			hopping_frequency_no=0;
+			BIND_DONE;
+			state++;													//FRSKY_DATA1
+			break;
+
+		case FRSKY_DATA1:
+			if ( prev_option != option )
+			{
+				CC2500_WriteReg(CC2500_0C_FSCTRL0,option);				//Frequency offset hack 
+				prev_option = option ;
+			}
+			FrSkyX_set_start(hopping_frequency_no);
+			FrSkyL_build_packet();
+			FrSkyL_encode_packet(true);
+			CC2500_SetPower();
+			hopping_frequency_no = (hopping_frequency_no+FrSkyX_chanskip)%47;
+			send=1;
+			return 537;
+	}		
+	return 1;		
+}
+
+uint16_t initFrSkyL()
+{
+	set_rx_tx_addr(MProtocol_id_master);
+	rx_tx_addr[1]=0x02;		// ID related, hw version?
+
+	#ifdef FRSKYL_FORCE_ID
+		rx_tx_addr[3]=0x0E;
+		rx_tx_addr[2]=0x1C;
+		rx_tx_addr[1]=0x02;
+	#endif
+	FrSkyX2_init_hop();
+	
+	while(!FrSkyX_chanskip)
+		FrSkyX_chanskip=random(0xfefefefe)%47;
+
+	FrSkyX_init();
+
+	//Prepare frame
+	memset(FrSkyL_buffer,0x00,FRSKYL_PACKET_LEN-3);
+	memset(&FrSkyL_buffer[FRSKYL_PACKET_LEN-3],0x55,3);
+	memset(packet,0xAA,6);
+	FrSkyL_encode_packet(false);
+	/*debugln("Frame:");
+	for(uint16_t i=0;i<FRSKYL_PACKET_LEN;i++)
+	{
+		debug(" %02X",FrSkyL_buffer[i]);
+		if(i%11==10)
+			debugln("");
+	}
+	debugln("");*/
+	
+	if(IS_BIND_IN_PROGRESS)
+	{	   
+		state = FRSKY_BIND;
+		FrSkyX_initialize_data(1);
+	}
+	else
+	{
+		state = FRSKY_DATA1;
+		FrSkyX_initialize_data(0);
+	}
+	return 10000;
+}	
+#endif

Multiprotocol/FrSkyX_cc2500.ino

@@ -1,19 +1,17 @@
-/*  **************************
+/*
-	* By Midelic on RCGroups *
+ This project is free software: you can redistribute it and/or modify
-	**************************
+ it under the terms of the GNU General Public License as published by
-	This project is free software: you can redistribute it and/or modify
+ the Free Software Foundation, either version 3 of the License, or
-	it under the terms of the GNU General Public License as published by
+ (at your option) any later version.
-	the Free Software Foundation, either version 3 of the License, or
-	(at your option) any later version.
 
-	Multiprotocol is distributed in the hope that it will be useful,
+ Multiprotocol is distributed in the hope that it will be useful,
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-	GNU General Public License for more details.
+ GNU General Public License for more details.
 
-	You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU General Public License
-	along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
-*/
+ */
 
 #if defined(FRSKYX_CC2500_INO)
 

Multiprotocol/Multi.txt

@@ -64,3 +64,4 @@
 64,FrskyX2,CH_16,CH_8,EU_16,EU_8
 65,FrSkyR9,915MHz,868MHz,915_8ch,868_8ch
 66,PROPEL,74-Z
+67,LR12,LR12,LR12_6ch

Multiprotocol/Multi_Names.ino

@@ -29,6 +29,7 @@ const char STR_SLT[]		="SLT";
 const char STR_CX10[]		="CX10";
 const char STR_CG023[]		="CG023";
 const char STR_BAYANG[]		="Bayang";
+const char STR_FRSKYL[]		="FrSky L";
 const char STR_FRSKYX[]		="FrSky X";
 const char STR_FRSKYX2[]	="FrSkyX2";
 const char STR_ESKY[]		="ESky";
@@ -124,6 +125,7 @@ const char STR_SUBTYPE_FRSKYR9[] =    "\x07""915MHz\0""868MHz\0""915 8ch""868 8c
 const char STR_SUBTYPE_ESKY[] =       "\x03""Std""ET4";
 const char STR_SUBTYPE_PROPEL[] =     "\x04""74-Z";
 const char STR_SUBTYPE_FRSKY_RX[] =   "\x07""RX\0    ""CloneTX";
+const char STR_SUBTYPE_FRSKYL[] =     "\x08""LR12\0   ""LR12 6ch";
 
 enum
 {
@@ -334,6 +336,9 @@ const mm_protocol_definition multi_protocols[] = {
 #endif
 #if defined(PROPEL_NRF24L01_INO)
 	{PROTO_PROPEL,     STR_PROPEL,    4, STR_SUBTYPE_PROPEL,    OPTION_NONE  },
+#endif
+#if defined(FRSKYL_CC2500_INO)
+	{PROTO_FRSKYL,     STR_FRSKYL,    2, STR_SUBTYPE_FRSKYL,    OPTION_RFTUNE  },
 #endif
 	{0x00,             nullptr,       0, nullptr,               0 }
 };

Multiprotocol/Multiprotocol.h

@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		3
 #define VERSION_REVISION	0
-#define VERSION_PATCH_LEVEL	85
+#define VERSION_PATCH_LEVEL	86
 
 //******************
 // Protocols
@@ -93,6 +93,7 @@ enum PROTOCOLS
 	PROTO_FRSKYX2	= 64,	// =>CC2500
 	PROTO_FRSKY_R9	= 65,	// =>SX1276
 	PROTO_PROPEL	= 66,	// =>NRF24L01
+	PROTO_FRSKYL	= 67,	// =>CC2500
 };
 
 enum Flysky
@@ -340,6 +341,12 @@ enum FRSKY_RX
 	FRSKY_CLONE	= 1,
 };
 
+enum FRSKYL
+{
+	LR12		= 0,
+	LR12_6CH	= 1,
+};
+
 #define NONE 		0
 #define P_HIGH		1
 #define P_LOW		0
@@ -894,8 +901,11 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 			ESKY_STD	0
 			ESKY_ET4	1
 		sub_protocol==FRSKY_RX
-			FRSKY_RX	= 0,
+			FRSKY_RX	0
-			FRSKY_CLONE	= 1,
+			FRSKY_CLONE	1
+		sub_protocol==FRSKYL
+			LR12		0
+			LR12_6CH	1
 
    Power value => 0x80	0=High/1=Low
   Stream[3]   = option_protocol;

Multiprotocol/Multiprotocol.ino

@@ -504,6 +504,11 @@ void setup()
 				option			=	FORCE_FRSKYD_TUNING;		// Use config-defined tuning value for FrSkyD
 			else
 		#endif
+		#if defined(FORCE_FRSKYL_TUNING) && defined(FRSKYL_CC2500_INO)
+			if(protocol==PROTO_FRSKYL) 
+				option			=	FORCE_FRSKYL_TUNING;		// Use config-defined tuning value for FrSkyL
+			else
+		#endif
 		#if defined(FORCE_FRSKYV_TUNING) && defined(FRSKYV_CC2500_INO)
 			if(protocol==PROTO_FRSKYV)
 				option			=	FORCE_FRSKYV_TUNING;		// Use config-defined tuning value for FrSkyV
@@ -753,8 +758,8 @@ bool Update_All()
 		{ // Autobind is on and BIND_CH went down
 			BIND_CH_PREV_off;
 			//Request protocol to terminate bind
-			#if defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYV_CC2500_INO) || defined(AFHDS2A_A7105_INO)
+			#if defined(FRSKYD_CC2500_INO) || defined(FRSKYL_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYV_CC2500_INO) || defined(AFHDS2A_A7105_INO)
-			if(protocol==PROTO_FRSKYD || protocol==PROTO_FRSKYX || protocol==PROTO_FRSKYX2 || protocol==PROTO_FRSKYV || protocol==PROTO_AFHDS2A )
+			if(protocol==PROTO_FRSKYD || protocol==PROTO_FRSKYL || protocol==PROTO_FRSKYX || protocol==PROTO_FRSKYX2 || protocol==PROTO_FRSKYV || protocol==PROTO_AFHDS2A )
 				BIND_DONE;
 			else
 			#endif
@@ -1112,6 +1117,14 @@ static void protocol_init()
 						remote_callback = ReadFrSky_2way;
 						break;
 				#endif
+				#if defined(FRSKYL_CC2500_INO)
+					case PROTO_FRSKYL:
+						PE1_off;	//antenna RF2
+						PE2_on;
+						next_callback = initFrSkyL();
+						remote_callback = ReadFrSkyL;
+						break;
+				#endif
 				#if defined(FRSKYV_CC2500_INO)
 					case PROTO_FRSKYV:
 						PE1_off;	//antenna RF2
@@ -1608,6 +1621,11 @@ void update_serial_data()
 			option=FORCE_FRSKYD_TUNING;			// Use config-defined tuning value for FrSkyD
 		else
 	#endif
+	#if defined(FORCE_FRSKYL_TUNING) && defined(FRSKYL_CC2500_INO)
+		if(protocol==PROTO_FRSKYL)
+			option=FORCE_FRSKYL_TUNING;			// Use config-defined tuning value for FrSkyL
+		else
+	#endif
 	#if defined(FORCE_FRSKYV_TUNING) && defined(FRSKYV_CC2500_INO)
 		if(protocol==PROTO_FRSKYV)
 			option=FORCE_FRSKYV_TUNING;			// Use config-defined tuning value for FrSkyV
@@ -1720,8 +1738,8 @@ void update_serial_data()
 		else
 			if( ((rx_ok_buff[1]&0x80)==0) && ((cur_protocol[1]&0x80)!=0) )	// Bind flag has been reset
 			{ // Request protocol to end bind
-				#if defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYV_CC2500_INO) || defined(AFHDS2A_A7105_INO) || defined(FRSKYR9_SX1276_INO)
+				#if defined(FRSKYD_CC2500_INO) || defined(FRSKYL_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYV_CC2500_INO) || defined(AFHDS2A_A7105_INO) || defined(FRSKYR9_SX1276_INO)
-				if(protocol==PROTO_FRSKYD || protocol==PROTO_FRSKYX || protocol==PROTO_FRSKYX2 || protocol==PROTO_FRSKYV || protocol==PROTO_AFHDS2A || protocol==PROTO_FRSKY_R9 )
+				if(protocol==PROTO_FRSKYD || protocol==PROTO_FRSKYL || protocol==PROTO_FRSKYX || protocol==PROTO_FRSKYX2 || protocol==PROTO_FRSKYV || protocol==PROTO_AFHDS2A || protocol==PROTO_FRSKY_R9 )
 					BIND_DONE;
 				else
 				#endif

Multiprotocol/Validate.h

@@ -202,6 +202,7 @@
 #endif
 #ifndef CC2500_INSTALLED
 	#undef	FRSKYD_CC2500_INO
+	#undef	FRSKYL_CC2500_INO
 	#undef	FRSKYV_CC2500_INO
 	#undef	FRSKYX_CC2500_INO
 	#undef	SFHSS_CC2500_INO

Multiprotocol/_Config.h

@@ -92,6 +92,7 @@
 //Uncomment the lines below (remove the "//") and set an appropriate value (replace the "0") to enable. Valid range is -127 to +127.
 //#define FORCE_CORONA_TUNING	0
 //#define FORCE_FRSKYD_TUNING	0
+//#define FORCE_FRSKYL_TUNING	0
 //#define FORCE_FRSKYV_TUNING	0
 //#define FORCE_FRSKYX_TUNING	0
 //#define FORCE_SFHSS_TUNING	0
@@ -176,6 +177,7 @@
 //The protocols below need a CC2500 to be installed
 #define	CORONA_CC2500_INO
 #define	FRSKYD_CC2500_INO
+#define	FRSKYL_CC2500_INO
 #define	FRSKYV_CC2500_INO
 #define	FRSKYX_CC2500_INO
 #define	FRSKY_RX_CC2500_INO
@@ -563,6 +565,9 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		FRSKY_CLONE
 	PROTO_FRSKYD
 		NONE
+	PROTO_FRSKYL
+		LR12
+		LR12_6CH
 	PROTO_FRSKYR9
 		R9_915
 		R9_868

Protocols_Details.md

@@ -86,8 +86,9 @@ CFlie|38|CFlie||||||||NRF24L01|
 [Flysky AFHDS2A](Protocols_Details.md#FLYSKY-AFHDS2A---28)|28|PWM_IBUS|PPM_IBUS|PWM_SBUS|PPM_SBUS|||||A7105|
 [Flysky AFHDS2A RX](Protocols_Details.md#FLYSKY-AFHDS2A-RX---56)|56|||||||||A7105|
 [Flyzone](Protocols_Details.md#FLYZONE---53)|53|FZ410||||||||A7105|
-[FQ777](Protocols_Details.md#FQ777---23)|23|FQ777||||||||NRF24L01|SSV7241
+[FQ777](Protocols_Details.md#FQ777---23)|23|||||||||NRF24L01|SSV7241
-[FrskyD](Protocols_Details.md#FRSKYD---3)|3|FrskyD||||||||CC2500|
+[FrskyD](Protocols_Details.md#FRSKYD---3)|3|||||||||CC2500|
+[FrskyL](Protocols_Details.md#FRSKYL---67)|67|LR12|LR12 6CH|||||||CC2500|
 [FrskyR9](Protocols_Details.md#FRSKYR9---65)|65|FrskyR9|R9_915|R9_868||||||SX1276|
 [FrskyV](Protocols_Details.md#FRSKYV---25)|25|FrskyV||||||||CC2500|
 [FrskyX](Protocols_Details.md#FRSKYX---15)|15|CH_16|CH_8|EU_16|EU_8|||||CC2500|
@@ -335,6 +336,28 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 ---|---|---|---|---|---|---|---
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 
+## FRSKYL - *67*
+Models: FrSky receivers L9R. Also known as LR12.
+
+Extended limits supported
+
+Option for this protocol corresponds to fine frequency tuning. This value is different for each Module and **must** be accurate otherwise the link will not be stable.
+Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it.
+
+### Sub_protocol LR12 - *0*
+Refresh rate: 36ms
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
+---|---|---|---|---|---|---|---|---|----|----|----
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
+
+### Sub_protocol LR12 6ch - *1*
+Refresh rate: 18ms
+
+CH1|CH2|CH3|CH4|CH5|CH6
+---|---|---|---|---|---
+CH1|CH2|CH3|CH4|CH5|CH6
+
 ## FRSKYX - *15*
 Models: FrSky v1.xxx receivers X4R, X6R and X8R. Protocol also known as D16.