From 38bc46fd1af5823c58a84abc7c08172e82a85039 Mon Sep 17 00:00:00 2001
From: Daniel Agar <daniel@agar.ca>
Date: Fri, 16 Apr 2021 09:49:01 -0400
Subject: [PATCH] re-add RC_MAP_RATT_SW (unused) and mark active for QGC

---
 src/modules/rc_update/params_deprecated.c | 60 +++++++++++++++++++++++
 src/modules/rc_update/rc_update.cpp       | 12 +++++
 2 files changed, 72 insertions(+)
 create mode 100644 src/modules/rc_update/params_deprecated.c

diff --git a/src/modules/rc_update/params_deprecated.c b/src/modules/rc_update/params_deprecated.c
new file mode 100644
index 0000000000..7664aeef31
--- /dev/null
+++ b/src/modules/rc_update/params_deprecated.c
@@ -0,0 +1,60 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 2021 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/**
+ * Rattitude switch channel (deprecated)
+ *
+ * @min 0
+ * @max 18
+ * @group Radio Switches
+ * @value 0 Unassigned
+ * @value 1 Channel 1
+ * @value 2 Channel 2
+ * @value 3 Channel 3
+ * @value 4 Channel 4
+ * @value 5 Channel 5
+ * @value 6 Channel 6
+ * @value 7 Channel 7
+ * @value 8 Channel 8
+ * @value 9 Channel 9
+ * @value 10 Channel 10
+ * @value 11 Channel 11
+ * @value 12 Channel 12
+ * @value 13 Channel 13
+ * @value 14 Channel 14
+ * @value 15 Channel 15
+ * @value 16 Channel 16
+ * @value 17 Channel 17
+ * @value 18 Channel 18
+ */
+PARAM_DEFINE_INT32(RC_MAP_RATT_SW, 0);
diff --git a/src/modules/rc_update/rc_update.cpp b/src/modules/rc_update/rc_update.cpp
index d259496866..7e80417a4f 100644
--- a/src/modules/rc_update/rc_update.cpp
+++ b/src/modules/rc_update/rc_update.cpp
@@ -155,6 +155,18 @@ void RCUpdate::parameters_updated()
 	}
 
 	update_rc_functions();
+
+	// deprecated parameters, will be removed post v1.12 once QGC is updated
+	{
+		int32_t rc_map_value = 0;
+
+		if (param_get(param_find("RC_MAP_RATT_SW"), &rc_map_value) == PX4_OK) {
+			if (rc_map_value != 0) {
+				PX4_WARN("RC_MAP_RATT_SW deprecated");
+				param_reset(param_find("RC_MAP_RATT_SW"));
+			}
+		}
+	}
 }
 
 void RCUpdate::update_rc_functions()