From 75862b3e2758da803b3e69cfd67d5ce8c5511a4e Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Mon, 27 Jun 2022 16:39:33 +1000
Subject: [PATCH] AP_LTM_Telem: add AP_LTM_TELEM_ENABLED

---
 libraries/AP_LTM_Telem/AP_LTM_Telem.cpp | 4 ++++
 libraries/AP_LTM_Telem/AP_LTM_Telem.h   | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/libraries/AP_LTM_Telem/AP_LTM_Telem.cpp b/libraries/AP_LTM_Telem/AP_LTM_Telem.cpp
index 66e9554cb1..8d4dc952c0 100644
--- a/libraries/AP_LTM_Telem/AP_LTM_Telem.cpp
+++ b/libraries/AP_LTM_Telem/AP_LTM_Telem.cpp
@@ -17,6 +17,8 @@
 
 #include "AP_LTM_Telem.h"
 
+#if AP_LTM_TELEM_ENABLED
+
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_GPS/AP_GPS.h>
 #include <AP_BattMonitor/AP_BattMonitor.h>
@@ -216,3 +218,5 @@ void AP_LTM_Telem::tick(void)
         generate_LTM();
     }
 }
+
+#endif  // AP_LTM_TELEM_ENABLED
diff --git a/libraries/AP_LTM_Telem/AP_LTM_Telem.h b/libraries/AP_LTM_Telem/AP_LTM_Telem.h
index 2461a9534a..03a3833fd7 100644
--- a/libraries/AP_LTM_Telem/AP_LTM_Telem.h
+++ b/libraries/AP_LTM_Telem/AP_LTM_Telem.h
@@ -16,6 +16,12 @@
 
 #include <AP_HAL/AP_HAL.h>
 
+#ifndef AP_LTM_TELEM_ENABLED
+#define AP_LTM_TELEM_ENABLED !HAL_MINIMIZE_FEATURES
+#endif
+
+#if AP_LTM_TELEM_ENABLED
+
 static const uint8_t LTM_GFRAME_SIZE = 18;
 static const uint8_t LTM_AFRAME_SIZE = 10;
 static const uint8_t LTM_SFRAME_SIZE = 11;
@@ -45,3 +51,5 @@ private:
     void send_LTM(uint8_t lt_packet[], uint8_t lt_packet_size);
     void tick(void); // tick - main call to send updates to transmitter (called by scheduler at 1kHz)
 };
+
+#endif