From 0e40f64c6b95467254533ac9fd92f4552892c236 Mon Sep 17 00:00:00 2001
From: pascallanger <pascal_langer@yahoo.fr>
Date: Sun, 10 Nov 2019 18:55:03 +0100
Subject: [PATCH] Enable HoTT RX config menu

Use OpenTX lua script
---
 Multiprotocol/HOTT_cc2500.ino   | 18 ++++++++++++++++++
 Multiprotocol/Multiprotocol.h   |  2 +-
 Multiprotocol/Multiprotocol.ino | 14 ++++++++++++++
 Protocols_Details.md            |  2 +-
 4 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/Multiprotocol/HOTT_cc2500.ino b/Multiprotocol/HOTT_cc2500.ino
index e3f3cea..d82f410 100644
--- a/Multiprotocol/HOTT_cc2500.ino
+++ b/Multiprotocol/HOTT_cc2500.ino
@@ -211,6 +211,20 @@ static void __attribute__((unused)) HOTT_data_packet()
 		packet[i+1] = val>>8;
 	}
 
+	#ifdef HOTT_FW_TELEMETRY
+		if(HoTT_SerialRX && HoTT_SerialRX_val >= 0xD7 && HoTT_SerialRX_val <= 0xDF)
+		{
+			packet[28] = HoTT_SerialRX_val;				// 0xDX->config menu
+			packet[29] = 0x01;							// 0x01->config menu
+			HoTT_SerialRX_val = 0xDF;					// no touch pressed
+		}
+		else
+		{
+			packet[28] = 0x8C;							// unknown 0x80 when bind starts then when RX replies start normal, 0x89/8A/8B/8C/8D/8E during normal packets, 0x0F->config menu
+			packet[29] = 0x02;							// unknown 0x02 when bind starts then when RX replies cycle in sequence 0x1A/22/2A/0A/12, 0x02 during normal packets, 0x01->config menu, 0x0A->no more RX telemetry
+		}
+	#endif
+
 	CC2500_SetTxRxMode(TX_EN);
 	CC2500_SetPower();
 	CC2500_WriteReg(CC2500_06_PKTLEN, 0x32);
@@ -354,6 +368,10 @@ uint16_t initHOTT()
 	HOTT_init();
 	HOTT_rf_init();
 	packet_count=0;
+	#ifdef HOTT_FW_TELEMETRY
+		HoTT_SerialRX_val=0;
+		HoTT_SerialRX=false;
+	#endif
 	phase = HOTT_START;
 	return 10000;
 }
diff --git a/Multiprotocol/Multiprotocol.h b/Multiprotocol/Multiprotocol.h
index 02964db..15a1152 100644
--- a/Multiprotocol/Multiprotocol.h
+++ b/Multiprotocol/Multiprotocol.h
@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		3
 #define VERSION_REVISION	0
-#define VERSION_PATCH_LEVEL	42
+#define VERSION_PATCH_LEVEL	43
 
 //******************
 // Protocols
diff --git a/Multiprotocol/Multiprotocol.ino b/Multiprotocol/Multiprotocol.ino
index f517db9..789292b 100644
--- a/Multiprotocol/Multiprotocol.ino
+++ b/Multiprotocol/Multiprotocol.ino
@@ -243,6 +243,10 @@ uint8_t packet_in[TELEMETRY_BUFFER_SIZE];//telemetry receiving packets
 		extern const mm_protocol_definition multi_protocols[];
 		uint8_t multi_protocols_index=0xFF;
 	#endif
+	#ifdef HOTT_FW_TELEMETRY
+		uint8_t HoTT_SerialRX_val=0;
+		bool HoTT_SerialRX=false;
+	#endif
 #endif // TELEMETRY
 
 // Callback
@@ -1682,6 +1686,9 @@ void update_serial_data()
 				Channel_data[i]=temp;			//value range 0..2047, 0=-125%, 2047=+125%
 	}
 
+	#ifdef HOTT_FW_TELEMETRY
+		HoTT_SerialRX=false;
+	#endif
 	if(rx_len>27)
 	{ // Data available for the current protocol
 		#ifdef SPORT_SEND
@@ -1720,6 +1727,13 @@ void update_serial_data()
 				}
 			}
 		#endif //SPORT_SEND
+		#ifdef HOTT_FW_TELEMETRY
+			if(protocol==PROTO_HOTT && rx_len==28)
+			{//Protocol waiting for 1 byte
+				HoTT_SerialRX_val=rx_ok_buff[27];
+				HoTT_SerialRX=true;
+			}
+		#endif
 	}
 
 	RX_DONOTUPDATE_off;
diff --git a/Protocols_Details.md b/Protocols_Details.md
index a008e4f..91c1bf0 100644
--- a/Protocols_Details.md
+++ b/Protocols_Details.md
@@ -417,7 +417,7 @@ Extended limits  and failsafe supported
 
 **Failsafe MUST be configured once with the desired channel values (hold or position) while the RX is up (wait 10+sec for the RX to learn the config) and then failsafe MUST be set to RX/Receiver otherwise the servos will jitter!!!**
 
-**The RX features must be configured first on a Graupner radio before binding it with Multi (RX config not implemented).**
+The RX features configuration are done using the OpenTX script "Graupner HoTT.lua" .
 
 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.