New protocol: Skyartec

Multiprotocol/Multi.txt

@@ -65,3 +65,4 @@
 65,FrSkyR9,915MHz,868MHz,915_8ch,868_8ch
 66,PROPEL,74-Z
 67,LR12,LR12,LR12_6ch
+68,Skyartec

Multiprotocol/Multi_Names.ino

@@ -81,6 +81,7 @@ const char STR_XK[]			="XK";
 const char STR_XN297DUMP[]	="XN297DP";
 const char STR_FRSKYR9[]	="FrSkyR9";
 const char STR_PROPEL[]		="PROPEL";
+const char STR_SKYARTEC[]	="Skyartc";
 
 const char STR_SUBTYPE_FLYSKY[] =     "\x04""Std\0""V9x9""V6x6""V912""CX20";
 const char STR_SUBTYPE_HUBSAN[] =     "\x04""H107""H301""H501";
@@ -227,7 +228,7 @@ const mm_protocol_definition multi_protocols[] = {
 		{PROTO_FRSKYL,     STR_FRSKYL,    2, STR_SUBTYPE_FRSKYL,    OPTION_RFTUNE  },
 	#endif
 	#if defined(FRSKYR9_SX1276_INO)
-		{PROTO_FRSKY_R9,   STR_FRSKYR9,   4, STR_SUBTYPE_FRSKYR9,   OPTION_NONE  },
+		{PROTO_FRSKY_R9,   STR_FRSKYR9,   4, STR_SUBTYPE_FRSKYR9,   OPTION_NONE    },
 	#endif
 	#if defined(FX816_NRF24L01_INO)
 		{PROTO_FX816,      STR_FX816,     1, STR_SUBTYPE_FX816,     OPTION_NONE    },
@@ -284,7 +285,7 @@ const mm_protocol_definition multi_protocols[] = {
 		{PROTO_POTENSIC,   STR_POTENSIC,  1, STR_SUBTYPE_POTENSIC,  OPTION_NONE    },
 	#endif
 	#if defined(PROPEL_NRF24L01_INO)
-		{PROTO_PROPEL,     STR_PROPEL,    4, STR_SUBTYPE_PROPEL,    OPTION_NONE  },
+		{PROTO_PROPEL,     STR_PROPEL,    4, STR_SUBTYPE_PROPEL,    OPTION_NONE    },
 	#endif
 	#if defined(CX10_NRF24L01_INO)
 		{PROTO_Q2X2,       STR_Q2X2,      3, STR_SUBTYPE_Q2X2,      OPTION_NONE    },
@@ -304,8 +305,11 @@ const mm_protocol_definition multi_protocols[] = {
 	#if defined(SHENQI_NRF24L01_INO)
 		{PROTO_SHENQI,     STR_SHENQI,    0, NO_SUBTYPE,            OPTION_NONE    },
 	#endif
+	#if defined(SKYARTEC_CC2500_INO)
+		{PROTO_SKYARTEC,   STR_SKYARTEC,  0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
 	#if defined(SLT_NRF24L01_INO)
-		{PROTO_SLT,        STR_SLT,       5, STR_SUBTYPE_SLT,       OPTION_RFTUNE    },
+		{PROTO_SLT,        STR_SLT,       5, STR_SUBTYPE_SLT,       OPTION_RFTUNE  },
 	#endif
 	#if defined(SYMAX_NRF24L01_INO)
 		{PROTO_SYMAX,      STR_SYMAX,     2, STR_SUBTYPE_SYMAX,     OPTION_NONE    },

Multiprotocol/Multiprotocol.h

@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		3
 #define VERSION_REVISION	0
-#define VERSION_PATCH_LEVEL	88
+#define VERSION_PATCH_LEVEL	89
 
 //******************
 // Protocols
@@ -94,6 +94,7 @@ enum PROTOCOLS
 	PROTO_FRSKY_R9	= 65,	// =>SX1276
 	PROTO_PROPEL	= 66,	// =>NRF24L01
 	PROTO_FRSKYL	= 67,	// =>CC2500
+	PROTO_SKYARTEC	= 68,	// =>CC2500
 };
 
 enum Flysky
@@ -396,7 +397,7 @@ enum MultiPacketTypes
 //***  Tests  ***
 //***************
 #define IS_FAILSAFE_PROTOCOL	( (protocol==PROTO_HISKY && sub_protocol==HK310) || protocol==PROTO_AFHDS2A || protocol==PROTO_DEVO || protocol==PROTO_SFHSS || protocol==PROTO_WK2x01 || protocol== PROTO_HOTT || protocol==PROTO_FRSKYX || protocol==PROTO_FRSKYX2 )
-#define IS_CHMAP_PROTOCOL		( (protocol==PROTO_HISKY && sub_protocol==HK310) || protocol==PROTO_AFHDS2A || protocol==PROTO_DEVO || protocol==PROTO_SFHSS || protocol==PROTO_WK2x01 || protocol== PROTO_DSM || protocol==PROTO_SLT || protocol==PROTO_FLYSKY || protocol==PROTO_ESKY || protocol==PROTO_J6PRO || protocol==PROTO_PELIKAN )
+#define IS_CHMAP_PROTOCOL		( (protocol==PROTO_HISKY && sub_protocol==HK310) || protocol==PROTO_AFHDS2A || protocol==PROTO_DEVO || protocol==PROTO_SFHSS || protocol==PROTO_WK2x01 || protocol== PROTO_DSM || protocol==PROTO_SLT || protocol==PROTO_FLYSKY || protocol==PROTO_ESKY || protocol==PROTO_J6PRO || protocol==PROTO_PELIKAN  || protocol==PROTO_SKYARTEC )
 
 //***************
 //***  Flags  ***
@@ -751,6 +752,8 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 				FRSKYX2		64
 				FRSKY_R9	65
 				PROPEL		66
+				FRSKYL		67
+				SKYARTEC	68
    BindBit=>		0x80	1=Bind/0=No
    AutoBindBit=>	0x40	1=Yes /0=No
    RangeCheck=>		0x20	1=Yes /0=No

Multiprotocol/Multiprotocol.ino

@@ -529,6 +529,11 @@ void setup()
 				option			=	FORCE_CORONA_TUNING;		// Use config-defined tuning value for CORONA
 			else
 		#endif
+		#if defined(FORCE_SKYARTEC_TUNING) && defined(SKYARTEC_CC2500_INO)
+			if (protocol==PROTO_SKYARTEC)
+				option			=	FORCE_SKYARTEC_TUNING;		// Use config-defined tuning value for SKYARTEC
+			else
+		#endif
 		#if defined(FORCE_REDPINE_TUNING) && defined(REDPINE_CC2500_INO)
 			if (protocol==PROTO_REDPINE)
 				option			=	FORCE_REDPINE_TUNING;		// Use config-defined tuning value for REDPINE
@@ -1158,6 +1163,14 @@ static void protocol_init()
 						remote_callback = ReadCORONA;
 						break;
 				#endif
+				#if defined(SKYARTEC_CC2500_INO)
+					case PROTO_SKYARTEC:
+						PE1_off;	//antenna RF2
+						PE2_on;
+						next_callback = initSKYARTEC();
+						remote_callback = ReadSKYARTEC;
+						break;
+				#endif
 				#if defined(REDPINE_CC2500_INO)
 					case PROTO_REDPINE:
 						PE1_off;	//antenna RF2
@@ -1646,6 +1659,11 @@ void update_serial_data()
 			option=FORCE_CORONA_TUNING;			// Use config-defined tuning value for CORONA
 		else
 	#endif
+	#if defined(FORCE_SKYARTEC_TUNING) && defined(SKYARTEC_CC2500_INO)
+		if (protocol==PROTO_SKYARTEC)
+			option=FORCE_SKYARTEC_TUNING;			// Use config-defined tuning value for SKYARTEC
+		else
+	#endif
 	#if defined(FORCE_REDPINE_TUNING) && defined(REDPINE_CC2500_INO)
 		if (protocol==PROTO_REDPINE)
 			option=FORCE_REDPINE_TUNING;		// Use config-defined tuning value for REDPINE

Multiprotocol/Skyartec_cc2500.ino

@@ -0,0 +1,174 @@
+/*
+ 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(SKYARTEC_CC2500_INO)
+
+#include "iface_cc2500.h"
+
+//#define SKYARTEC_FORCE_ID
+
+#define SKYARTEC_BIND_CHANNEL		0x7D
+#define SKYARTEC_COARSE				0x00
+#define SKYARTEC_TX_ADDR			rx_tx_addr[1]
+#define SKYARTEC_TX_CHANNEL			rx_tx_addr[0]
+
+enum {
+    SKYARTEC_PKT1 = 0,
+    SKYARTEC_SLEEP1, 
+    SKYARTEC_PKT2,
+    SKYARTEC_SLEEP2, 
+    SKYARTEC_PKT3,
+    SKYARTEC_SLEEP3, 
+    SKYARTEC_PKT4,
+    SKYARTEC_SLEEP4, 
+    SKYARTEC_PKT5,
+    SKYARTEC_SLEEP5, 
+    SKYARTEC_PKT6,
+    SKYARTEC_LAST,
+};
+
+const PROGMEM uint8_t SKYARTEC_init_values[] = {
+  /* 04 */ 0x13, 0x18, 0xFF, 0x05,
+  /* 08 */ 0x05, 0x43, SKYARTEC_BIND_CHANNEL, 0x09, 0x00, 0x5D, 0x93, 0xB1 + SKYARTEC_COARSE,
+  /* 10 */ 0x2D, 0x20, 0x73, 0x22, 0xF8, 0x50, 0x07, 0x30,
+  /* 18 */ 0x18, 0x1D, 0x1C, 0xC7, 0x00, 0xB2, 0x87, 0x6B,
+  /* 20 */ 0xF8, 0xB6, 0x10, 0xEA, 0x0A, 0x00, 0x11, 0x41,
+  /* 28 */ 0x00, 0x59, 0x7F, 0x3F, 0x88, 0x31, 0x0B
+};
+
+static void __attribute__((unused)) SKYARTEC_rf_init()
+{
+	CC2500_Strobe(CC2500_SIDLE);
+
+	for (uint8_t i = 4; i <= 0x2E; ++i)
+		CC2500_WriteReg(i, pgm_read_byte_near(&SKYARTEC_init_values[i-4]));
+	
+	prev_option = option;
+	CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+
+	CC2500_SetTxRxMode(TX_EN);
+	CC2500_SetPower();
+}
+
+static void __attribute__((unused)) SKYARTEC_send_data_packet()
+{
+	//13 c5 01 0259 0168 0000 0259 030c 021a 0489 f3 7e 0a
+	//header
+	packet[0] = 0x13;				//Length
+	packet[1] = SKYARTEC_TX_ADDR;	//Tx Addr?
+	packet[2] = 0x01;				//???
+	//channels
+	for(uint8_t i = 0; i < 7; i++)
+	{
+		uint16_t value = convert_channel_16b_limit(CH_AETR[i],0x000,0x500);
+		packet[3+2*i] = value >> 8;
+		packet[4+2*i] = value & 0xff;
+	}
+	//checks
+    uint8_t xor1 = 0;
+    for(uint8_t i = 3; i <= 16; i++)
+        xor1 ^= packet[i];
+    packet[17] = xor1;
+    uint8_t xor2 = 0;
+    for(uint8_t i = 3; i <= 14; i++)
+        xor2 ^= packet[i];
+    packet[18] = xor2;
+    packet[19] = packet[3] + packet[5] + packet[7] + packet[9] + packet[11] + packet[13];
+
+	CC2500_WriteReg(CC2500_04_SYNC1,	rx_tx_addr[3]);
+	CC2500_WriteReg(CC2500_05_SYNC0,	rx_tx_addr[2]);
+	CC2500_WriteReg(CC2500_09_ADDR,		SKYARTEC_TX_ADDR);
+	CC2500_WriteReg(CC2500_0A_CHANNR,	SKYARTEC_TX_CHANNEL);
+	CC2500_WriteData(packet, 20);
+}
+
+static void __attribute__((unused)) SKYARTEC_send_bind_packet()
+{
+	//0b 7d 01 01 b2 c5 4a 2f 00 00 c5 d6
+	packet[0] = 0x0b;       //Length
+	packet[1] = 0x7d;
+	packet[2] = 0x01;
+	packet[3] = 0x01;
+	memcpy(&packet[4], rx_tx_addr, 4);
+	packet[8] = 0x00;
+	packet[9] = 0x00;
+	packet[10] = SKYARTEC_TX_ADDR;
+	uint8_t xor1 = 0;
+	for(uint8_t i = 3; i < 11; i++)
+		xor1 ^= packet[i];
+	packet[11] = xor1;
+	CC2500_WriteReg(CC2500_04_SYNC1,	0x7d);
+	CC2500_WriteReg(CC2500_05_SYNC0,	0x7d);
+	CC2500_WriteReg(CC2500_09_ADDR,		0x7d);
+	CC2500_WriteReg(CC2500_0A_CHANNR,	SKYARTEC_BIND_CHANNEL);
+	CC2500_WriteData(packet, 12);
+}
+
+uint16_t ReadSKYARTEC()
+{
+	if (phase & 0x01)
+	{
+		CC2500_Strobe(CC2500_SIDLE);
+		if (phase == SKYARTEC_LAST)
+		{
+			CC2500_SetPower();
+			// Tune frequency if it has been changed
+			if ( prev_option != option )
+			{
+				CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+				prev_option = option ;
+			}
+			phase = SKYARTEC_PKT1;
+		}
+		else
+			phase++;
+		return 3000;
+	}
+	if (phase == SKYARTEC_PKT1 && bind_counter)
+	{
+		SKYARTEC_send_bind_packet();
+		bind_counter--;
+		if(bind_counter == 0)
+			BIND_DONE;
+	}
+	else
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(6000);
+		#endif
+		SKYARTEC_send_data_packet();
+	}
+	phase++;
+	return 3000;
+}
+
+uint16_t initSKYARTEC()
+{
+    SKYARTEC_rf_init();
+
+	#ifdef SKYARTEC_FORCEID
+		memset(rx_tx_addr,0x00,4);
+	#endif
+	if(rx_tx_addr[0]==0) rx_tx_addr[0]=0xB2;
+	if(rx_tx_addr[1]==0) rx_tx_addr[1]=0xC5;
+	if(rx_tx_addr[2]==0) rx_tx_addr[2]=0x4A;
+	if(rx_tx_addr[3]==0) rx_tx_addr[3]=0x2F;
+
+	bind_counter = 250;
+	phase = SKYARTEC_PKT1;
+	return 10000;
+}
+
+#endif

Multiprotocol/Validate.h

@@ -99,6 +99,11 @@
 		#error "The HITEC forced frequency tuning value is outside of the range -127..127."
 	#endif
 #endif
+#ifdef FORCE_HOTT_TUNING
+	#if ( FORCE_HOTT_TUNING < -127 ) || ( FORCE_HOTT_TUNING > 127 )
+		#error "The HOTT forced frequency tuning value is outside of the range -127..127."
+	#endif
+#endif
 #ifdef FORCE_REDPINE_TUNING
 	#if ( FORCE_REDPINE_TUNING < -127 ) || ( FORCE_REDPINE_TUNING > 127 )
 		#error "The REDPINE forced frequency tuning value is outside of the range -127..127."
@@ -109,9 +114,9 @@
 		#error "The SFHSS forced frequency tuning value is outside of the range -127..127."
 	#endif
 #endif
-#ifdef FORCE_HOTT_TUNING
+#ifdef FORCE_SKYARTEC_TUNING
-	#if ( FORCE_HOTT_TUNING < -127 ) || ( FORCE_HOTT_TUNING > 127 )
+	#if ( FORCE_SKYARTEC_TUNING < -127 ) || ( FORCE_SKYARTEC_TUNING > 127 )
-		#error "The HOTT forced frequency tuning value is outside of the range -127..127."
+		#error "The SKYARTEC forced frequency tuning value is outside of the range -127..127."
 	#endif
 #endif
 //A7105
@@ -188,12 +193,12 @@
 
 //Make sure protocols are selected correctly
 #ifndef A7105_INSTALLED
-	#undef FLYSKY_A7105_INO
-	#undef HUBSAN_A7105_INO
 	#undef AFHDS2A_A7105_INO
-	#undef BUGS_A7105_INO
-	#undef FLYZONE_A7105_INO
 	#undef AFHDS2A_RX_A7105_INO
+	#undef BUGS_A7105_INO
+	#undef FLYSKY_A7105_INO
+	#undef FLYZONE_A7105_INO
+	#undef HUBSAN_A7105_INO
 	#undef PELIKAN_A7105_INO
 #endif
 #ifndef CYRF6936_INSTALLED
@@ -201,62 +206,63 @@
 	#undef	DSM_CYRF6936_INO
 	#undef	HOTT_CC2500_INO
 	#undef	J6PRO_CYRF6936_INO
+	#undef	TRAXXAS_CYRF6936_INO
 	#undef	WFLY_CYRF6936_INO
 	#undef	WK2x01_CYRF6936_INO
-	#undef	TRAXXAS_CYRF6936_INO
 #endif
 #ifndef CC2500_INSTALLED
+	#undef	CORONA_CC2500_INO
 	#undef	FRSKYD_CC2500_INO
 	#undef	FRSKYL_CC2500_INO
 	#undef	FRSKYV_CC2500_INO
 	#undef	FRSKYX_CC2500_INO
-	#undef	SFHSS_CC2500_INO
-	#undef	CORONA_CC2500_INO
-	#undef	REDPINE_CC2500_INO
-	#undef	HITEC_CC2500_INO
-	#undef	SCANNER_CC2500_INO
 	#undef	FRSKY_RX_CC2500_INO
+	#undef	HITEC_CC2500_INO
 	#undef	HOTT_CC2500_INO
+	#undef	REDPINE_CC2500_INO
+	#undef	SCANNER_CC2500_INO
+	#undef	SFHSS_CC2500_INO
+	#undef	SKYARTEC_CC2500_INO
 #endif
 #ifndef NRF24L01_INSTALLED
+	#undef	ASSAN_NRF24L01_INO
 	#undef	BAYANG_NRF24L01_INO
+	#undef	BAYANG_RX_NRF24L01_INO
+	#undef	BUGSMINI_NRF24L01_INO
+	#undef	CABELL_NRF24L01_INO
+	#undef	CFLIE_NRF24L01_INO
 	#undef	CG023_NRF24L01_INO
 	#undef	CX10_NRF24L01_INO
+	#undef	DM002_NRF24L01_INO
+	#undef	E01X_NRF24L01_INO
 	#undef	ESKY_NRF24L01_INO
-	#undef	HISKY_NRF24L01_INO
+	#undef	ESKY150_NRF24L01_INO
-	#undef	KF606_NRF24L01_INO
+	#undef	FQ777_NRF24L01_INO
-	#undef	KN_NRF24L01_INO
-	#undef	SLT_NRF24L01_INO
-	#undef	SYMAX_NRF24L01_INO
-	#undef	V2X2_NRF24L01_INO
-	#undef	YD717_NRF24L01_INO
-	#undef	MT99XX_NRF24L01_INO
-	#undef	MJXQ_NRF24L01_INO
-	#undef	SHENQI_NRF24L01_INO
 	#undef	FX816_NRF24L01_INO
 	#undef	FY326_NRF24L01_INO
-	#undef	FQ777_NRF24L01_INO
-	#undef	ASSAN_NRF24L01_INO
-	#undef	HONTAI_NRF24L01_INO
-	#undef	Q303_NRF24L01_INO
-	#undef	GW008_NRF24L01_INO
 	#undef	GD00X_NRF24L01_INO
-	#undef	DM002_NRF24L01_INO
+	#undef	GW008_NRF24L01_INO
-	#undef	CABELL_NRF24L01_INO
-	#undef	ESKY150_NRF24L01_INO
 	#undef	H8_3D_NRF24L01_INO
-	#undef	CFLIE_NRF24L01_INO
+	#undef	HISKY_NRF24L01_INO
-	#undef	BUGSMINI_NRF24L01_INO
+	#undef	HONTAI_NRF24L01_INO
+	#undef	KF606_NRF24L01_INO
+	#undef	KN_NRF24L01_INO
+	#undef	MJXQ_NRF24L01_INO
+	#undef	MT99XX_NRF24L01_INO
 	#undef	NCC1701_NRF24L01_INO
-	#undef	E01X_NRF24L01_INO
+	#undef	POTENSIC_NRF24L01_INO
+	#undef	PROPEL_NRF24L01_INO
+	#undef	Q303_NRF24L01_INO
+	#undef	SHENQI_NRF24L01_INO
+	#undef	SLT_NRF24L01_INO
+	#undef	SYMAX_NRF24L01_INO
+	#undef	TIGER_NRF24L01_INO
+	#undef	V2X2_NRF24L01_INO
 	#undef	V761_NRF24L01_INO
 	#undef	V911S_NRF24L01_INO
-	#undef	POTENSIC_NRF24L01_INO
-	#undef	ZSX_NRF24L01_INO
-	#undef	BAYANG_RX_NRF24L01_INO
-	#undef	TIGER_NRF24L01_INO
 	#undef	XK_NRF24L01_INO
-	#undef	PROPEL_NRF24L01_INO
+	#undef	YD717_NRF24L01_INO
+	#undef	ZSX_NRF24L01_INO
 #endif
 #if not defined(STM32_BOARD)
 	#undef SX1276_INSTALLED

Multiprotocol/_Config.h

@@ -96,6 +96,7 @@
 //#define FORCE_FRSKYV_TUNING	0
 //#define FORCE_FRSKYX_TUNING	0
 //#define FORCE_SFHSS_TUNING	0
+//#define FORCE_SKYARTEC_TUNING	0
 //#define FORCE_HITEC_TUNING	0
 //#define FORCE_HOTT_TUNING		0
 //#define FORCE_REDPINE_TUNING	0
@@ -185,6 +186,7 @@
 #define	HOTT_CC2500_INO
 #define	SCANNER_CC2500_INO
 #define	SFHSS_CC2500_INO
+#define	SKYARTEC_CC2500_INO
 #define	REDPINE_CC2500_INO
 
 //The protocols below need a NRF24L01 to be installed
@@ -671,6 +673,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		NONE
 	PROTO_SHENQI
 		NONE
+	PROTO_SKYARTEC
+		NONE
 	PROTO_SLT
 		SLT_V1
 		SLT_V2

Protocols_Details.md

@@ -118,8 +118,9 @@ CFlie|38|CFlie||||||||NRF24L01|
 [Q303](Protocols_Details.md#Q303---31)|31|Q303|CX35|CX10D|CX10WD|||||NRF24L01|XN297
 [Redpine](Protocols_Details.md#Redpine---50)|50|FAST|SLOW|||||||NRF24L01|
 [Scanner](Protocols_Details.md#Scanner---54)|54|||||||||CC2500|
-[SFHSS](Protocols_Details.md#SFHSS---21)|21|SFHSS||||||||CC2500|
+[SFHSS](Protocols_Details.md#SFHSS---21)|21|||||||||CC2500|
-[Shenqi](Protocols_Details.md#Shenqi---19)|19|Shenqi||||||||NRF24L01|LT8900
+[Shenqi](Protocols_Details.md#Shenqi---19)|19|||||||||NRF24L01|LT8900
+[Skyartec](Protocols_Details.md#Skyartec---68)|68|||||||||CC2500|CC2500
 [SLT](Protocols_Details.md#SLT---11)|11|SLT_V1|SLT_V2|Q100|Q200|MR100||||NRF24L01|
 [SymaX](Protocols_Details.md#Symax---10)|10|SYMAX|SYMAX5C|||||||NRF24L01|
 [Tiger](Protocols_Details.md#Tiger---61)|61|Tiger||||||||NRF24L01|XN297
@@ -499,6 +500,9 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
 
 Basic telemetry is available on OpenTX 2.3.3+ with RX voltage, Rx temperature, RX RSSI, RX LQI, TX RSSI and TX LQI. Lowest the TX_LQI value is best the quality link is, it's a good indicator of how well the module is tuned.
 
+## Scanner - *54*
+2.4GHz scanner accessible using the OpenTX 2.3 Spectrum Analyser tool.
+
 ## SFHSS - *21*
 Models: Futaba RXs and XK models.
 
@@ -511,8 +515,14 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 ---|---|---|---|---|---|---|---
 A|E|T|R|CH5|CH6|CH7|CH8
 
-## Scanner - *54*
+## Skyartec - *68*
-2.4GHz scanner accessible using the OpenTX 2.3 Spectrum Analyser tool.
+
+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.
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7
+---|---|---|---|---|---|---
+A|E|T|R|CH5|CH6|CH7
 
 ***
 # CYRF6936 RF Module