From 22a0d793150d02b36fe6e170906145ddd5dbd11b Mon Sep 17 00:00:00 2001
From: pascallanger <pascal_langer@yahoo.fr>
Date: Sun, 22 Sep 2019 17:05:46 +0200
Subject: [PATCH] FrskyX_RX documentation

---
 Multiprotocol/FrSkyX_Rx_cc2500.ino |  4 ++--
 Multiprotocol/_Config.h            |  4 ++--
 Protocols_Details.md               | 27 +++++++++++++++++++++++++++
 3 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/Multiprotocol/FrSkyX_Rx_cc2500.ino b/Multiprotocol/FrSkyX_Rx_cc2500.ino
index c66c632..a83e7e5 100644
--- a/Multiprotocol/FrSkyX_Rx_cc2500.ino
+++ b/Multiprotocol/FrSkyX_Rx_cc2500.ino
@@ -183,7 +183,7 @@ uint16_t initFrSkyX_Rx()
 		phase = FRSKYX_RX_BIND;
 	}
 	else {
-		uint16_t temp = FRSKYX_RX_EEPROM_OFFSET + ((RX_num & 0x03) * 50);
+		uint16_t temp = FRSKYX_RX_EEPROM_OFFSET;
 		rx_tx_addr[0] = eeprom_read_byte(temp++);
 		rx_tx_addr[1] = eeprom_read_byte(temp++);
 		rx_tx_addr[2] = eeprom_read_byte(temp++);
@@ -239,7 +239,7 @@ uint16_t FrSkyX_Rx_callback()
 				phase = FRSKYX_RX_DATA;
 				frskyx_rx_set_channel(hopping_frequency_no);
 				// store txid and channel list
-				uint16_t temp = FRSKYX_RX_EEPROM_OFFSET+((RX_num & 0x03) * 50);
+				uint16_t temp = FRSKYX_RX_EEPROM_OFFSET;
 				eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[0]);
 				eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[1]);
 				eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[2]);
diff --git a/Multiprotocol/_Config.h b/Multiprotocol/_Config.h
index 168601f..226738d 100644
--- a/Multiprotocol/_Config.h
+++ b/Multiprotocol/_Config.h
@@ -550,8 +550,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		EU_16
 		EU_8
 	PROTO_FRSKYX_RX
-		FCC
-		LBT
+		FRSKYX_FCC
+		FRSKYX_LBT
 	PROTO_FY326
 		FY326
 		FY319
diff --git a/Protocols_Details.md b/Protocols_Details.md
index 45aa253..4ac7f5d 100644
--- a/Protocols_Details.md
+++ b/Protocols_Details.md
@@ -89,6 +89,7 @@ CFlie|38|CFlie||||||||NRF24L01|
 [FrskyD](Protocols_Details.md#FRSKYD---3)|3|FrskyD||||||||CC2500|
 [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|
+[FrskyX_RX](Protocols_Details.md#FRSKYX_RX---55)|55|FCC|EU_LBT|||||CC2500|
 [FY326](Protocols_Details.md#FY326---20)|20|FY326|FY319|||||||NRF24L01|
 [GD00X](Protocols_Details.md#GD00X---47)|47|GD_V1*|GD_V2*|||||||NRF24L01|
 [GW008](Protocols_Details.md#GW008---32)|32|GW008||||||||NRF24L01|XN297
@@ -341,6 +342,32 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 ---|---|---|---|---|---|---|---
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 
+## FRSKYX_RX - *55*
+The FrSkyX receiver protocol enables master/slave trainning, separate access from 2 different radios to the same model,...
+
+Extended limits supported
+
+Option for this protocol corresponds to fine frequency tuning.
+If the value is equal to 0, the RX will auto tune otherwise it will use the indicated value.
+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.
+
+Low power: enable/disable the LNA stage on the RF component to use depending on the distance with the TX.
+
+### Sub_protocol FCC - *0*
+FCC protocol 8 or 16 channels.
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+---|---|---|---|---|---|---|---|---|----|----|----|----|----|----|----
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+
+### Sub_protocol EU_LBT - *1*
+EU_LBT protocol 8 or 16 channels.
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+---|---|---|---|---|---|---|---|---|----|----|----|----|----|----|----
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+
 ## HITEC - *39*
 Models: OPTIMA, MINIMA and MICRO receivers.