KF606: subprotocol ZC-Z50v2 Cessna

Maybe newer iteration of Z50. My plane does not have front propeller.
But if there is one, its just for design. This model does not have front motor.

Thanks @pascallanger for support and reviews.

Lua_scripts/MultiChan.txt

@@ -117,6 +117,7 @@
 71,1,JJRC345,SkyTmblr,1,Flip,HLess,RTH,LED,UNK1,UNK2,UNK3
 49,0,KF606,KF606,1,Trim
 49,1,KF606,MIG320,1,Trim,LED
+49,2,KF606,ZCZ50,1,Trim,UNK
 9,0,KN,WLToys,0,DRate,THold,IdleUp,Gyro,Ttrim,Atrim,Etrim
 9,1,KN,Feilun,0,DRate,THold,IdleUp,Gyro,Ttrim,Atrim,Etrim
 73,0,Kyosho,Std,0,CH5,CH6,CH7,CH8,CH9,CH10,CH11,CH12,CH13,CH14

Multiprotocol/KF606_ccnrf.ino

@@ -20,6 +20,7 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 //#define FORCE_KF606_ORIGINAL_ID
 //#define FORCE_MIG320_ORIGINAL_ID
+//#define FORCE_ZCZ50_ORIGINAL_ID
 
 #define KF606_INITIAL_WAIT    500
 #define KF606_PACKET_PERIOD   3000
@@ -30,11 +31,17 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 static void __attribute__((unused)) KF606_send_packet()
 {
+	uint8_t len = KF606_PAYLOAD_SIZE;
 	if(IS_BIND_IN_PROGRESS)
+	{
+		if(sub_protocol != KF606_ZCZ50)
 		{
 			packet[0] = 0xAA;
 			memcpy(&packet[1],rx_tx_addr,3);
 		}
+		else
+			memcpy(packet,rx_tx_addr,4);
+	}
 	else
 	{
 		XN297_Hopping(hopping_frequency_no);
@@ -43,13 +50,13 @@ static void __attribute__((unused)) KF606_send_packet()
 		packet[0] = 0x55;
 		packet[1] = convert_channel_8b(THROTTLE);					// 0..255
 		// Deadband is needed on aileron, 40 gives +-6%
-		if(sub_protocol == KF606_KF606)
+		switch(sub_protocol)
 		{
+			case KF606_KF606:
 				packet[2] = convert_channel_8b_limit_deadband(AILERON,0x20,0x80,0xE0,40);	// Aileron: Max values:20..80..E0, Low rates:50..80..AF, High rates:3E..80..C1
 				packet[3] = convert_channel_16b_limit(CH5,0xC1,0xDF);						// Aileron trim must be on a separated channel C1..D0..DF
-		}
+				break;
-		else
+			case KF606_MIG320:
-		{
 				packet[2] = convert_channel_8b_limit_deadband(AILERON,0x00,0x80,0xFF,40);	// Aileron: High rate:2B..80..DA
 				packet[3] = convert_channel_16b_limit(CH5,0x01,0x1F);						// Aileron trim must be on a separated channel 01..10..1F
 				packet[3] += (packet[2]-0x80)>>3;											// Drive trims for more aileron authority
@@ -58,10 +65,17 @@ static void __attribute__((unused)) KF606_send_packet()
 				else if(packet[3] > 0x1F)
 					packet[3] = 0x1F;
 				packet[3] |= GET_FLAG(CH6_SW, 0xC0);										// 0xC0 and 0xE0 are both turning the LED off, not sure if there is another hidden feature
+				break;
+			case KF606_ZCZ50:
+				len--;																		// uses only 3 bytes of payload
+				packet[0] = packet[1];														// Throttle: 0x00..0xFF
+				packet[1] = convert_channel_8b_limit_deadband(AILERON,0x20,0x80,0xE0,40);	// Aileron: Max values:20..80..E0, low rate 0x52..0x80..0xB1, high rate: 0x41..0x80..0xC3.
+				packet[2] = convert_channel_16b_limit(CH5,0x01,0x1F);						// Trim: 0x01..0x10..0x1F
+				packet[2] |= GET_FLAG(CH6_SW, 0xC0);										// Unknown: 0x00 or 0xC0. Left top switch on original TX changes nothing on my plane. Maybe ON/OFF for main motor?
+				break;
 		}
 	}
 
-	uint8_t len = KF606_PAYLOAD_SIZE;
 	if(sub_protocol == KF606_MIG320)
 	{
 		len++;
@@ -107,6 +121,19 @@ static void __attribute__((unused)) KF606_initialize_txid()
 		hopping_frequency[0]=68;
 		hopping_frequency[1]=71;
 	#endif
+	if(sub_protocol == KF606_ZCZ50)
+	{
+		rx_tx_addr[1] = rx_tx_addr[0];
+		rx_tx_addr[0]=0xAA;
+	}
+	#ifdef FORCE_ZCZ50_ORIGINAL_ID
+		rx_tx_addr[0]=0xAA;
+		rx_tx_addr[1]=0x67;
+		rx_tx_addr[2]=0x64;
+		rx_tx_addr[3]=0x01;
+		hopping_frequency[0]=48;
+		hopping_frequency[1]=51;
+	#endif
 }
 
 static void __attribute__((unused)) KF606_RF_init()
@@ -126,7 +153,7 @@ uint16_t KF606_callback()
 		if(--bind_counter==0)
 		{
 			BIND_DONE;
-			XN297_SetTXAddr(rx_tx_addr, 3);
+			XN297_SetTXAddr(rx_tx_addr, sub_protocol != KF606_ZCZ50 ? 3 : 4);
 		}
 	KF606_send_packet();
 	return KF606_PACKET_PERIOD;
@@ -153,3 +180,14 @@ void KF606_init()
 // P[2] = AIL 2B..80..DA
 // P[3] = TRIM 01..10..1F
 // channels 68=BB&3F+9 and 71
+
+
+// ZCZ50v2 protocol (with fake front propeller)
+// Bind
+// 250K C=7 S=Y A= E7 E7 E7 E7 E7 P(4)= AA 67 64 01
+// 3ms on ch7
+// Normal
+// 250K C=48 S=Y A= AA 67 64 01 P(3)= 00 80 10
+// P[0] = THR 0x00..0xFF
+// P[1] = AIL low rate 0x52..0x80..0xB1, high rate: 0x41..0x80..0xC3
+// P[2] = TRIM 0x01..0x10..0x1F + UNKNOWN 0x00 or 0xC0

Multiprotocol/Multi.txt

@@ -46,7 +46,7 @@
 46,V911S,V911S,E119
 47,GD00x,GD_V1,GD_V2
 48,V761,3CH,4CH,TOPRC
-49,KF606,KF606,MIG320
+49,KF606,KF606,MIG320,ZCZ50
 50,Redpine,Fast,Slow
 51,Potensic,A20
 52,ZSX,280

Multiprotocol/Multi_Protos.ino

@@ -171,7 +171,7 @@ const char STR_SUBTYPE_KYOSHO2[] =    "\x05""KT-17";
 const char STR_SUBTYPE_FUTABA[] =     "\x05""SFHSS";
 const char STR_SUBTYPE_JJRC345[] =    "\x08""JJRC345\0""SkyTmblr";
 const char STR_SUBTYPE_MOULKG[] =     "\x06""Analog""Digit\0";
-const char STR_SUBTYPE_KF606[] =      "\x06""KF606\0""MIG320";
+const char STR_SUBTYPE_KF606[] =      "\x06""KF606\0""MIG320""ZCZ50\0";
 const char STR_SUBTYPE_E129[] =       "\x04""E129""C186";
 const char STR_SUBTYPE_FX[] =         "\x03""816""620";
 #define NO_SUBTYPE		nullptr
@@ -360,7 +360,7 @@ const mm_protocol_definition multi_protocols[] = {
 		{PROTO_JOYSWAY,    STR_JOYSWAY,   NO_SUBTYPE,            0, OPTION_NONE,    0, 0, SW_A7105,  JOYSWAY_init,    JOYSWAY_callback    },
 	#endif
 	#if defined(KF606_CCNRF_INO)
-		{PROTO_KF606,      STR_KF606,     STR_SUBTYPE_KF606,     2, OPTION_RFTUNE,  0, 0, SW_NRF,    KF606_init,      KF606_callback      },
+		{PROTO_KF606,      STR_KF606,     STR_SUBTYPE_KF606,     3, OPTION_RFTUNE,  0, 0, SW_NRF,    KF606_init,      KF606_callback      },
 	#endif
 	#if defined(KN_NRF24L01_INO)
 		{PROTO_KN,         STR_KN,        STR_SUBTYPE_KN,        2, OPTION_NONE,    0, 0, SW_NRF,    KN_init,         KN_callback         },

Multiprotocol/Multiprotocol.h

@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		3
 #define VERSION_REVISION	3
-#define VERSION_PATCH_LEVEL	24
+#define VERSION_PATCH_LEVEL	25
 
 #define MODE_SERIAL 0
 
@@ -450,6 +450,7 @@ enum KF606
 {
 	KF606_KF606		= 0,
 	KF606_MIG320	= 1,
+	KF606_ZCZ50		= 2,
 };
 enum E129
 {

Multiprotocol/_Config.h

@@ -717,6 +717,7 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 	PROTO_KF606
 		KF606_KF606
 		KF606_MIG320
+		KF606_ZCZ50
 	PROTO_KN
 		WLTOYS
 		FEILUN

Protocols_Details.md

@@ -110,7 +110,7 @@ CFlie|38|CFlie||||||||NRF24L01|
 [J6Pro](Protocols_Details.md#J6Pro---22)|22|||||||||CYRF6936|
 [JJRC345](Protocols_Details.md#JJRC345---71)|71|JJRC345|SkyTmblr|||||||NRF24L01|XN297
 [JOYSWAY](Protocols_Details.md#JOYSWAY---84)|84|||||||||NRF24L01|XN297
-[KF606](Protocols_Details.md#KF606---49)|49|KF606|MIG320|||||||NRF24L01|XN297
+[KF606](Protocols_Details.md#KF606---49)|49|KF606|MIG320|ZCZ50||||||NRF24L01|XN297
 [KN](Protocols_Details.md#KN---9)|9|WLTOYS|FEILUN|||||||NRF24L01|
 [Kyosho](Protocols_Details.md#Kyosho---73)|73|FHSS|Hype|||||||A7105|
 [Kyosho2](Protocols_Details.md#Kyosho2---93)|93|KT-17||||||||NRF24L01|
@@ -1049,6 +1049,15 @@ CH1|CH2|CH3|CH4|CH5|CH6
 ---|---|---|---|---|---
 A||T||TRIM|LED
 
+### Sub_protocol ZCZ50v2 - *2*
+Model: ZC-Z50 Cessna
+
+This might be newer version of the model. My plane does not have front propeller, but its just fake anyway (no motor in the front).
+
+CH1|CH2|CH3|CH4|CH5|CH6
+---|---|---|---|---|---
+A||T||TRIM|UNKNOWN
+
 ## MJXQ - *18*
 Autobind protocol