Plane: added AP_Button support for plane

this also adds the g2 parameter table

ArduPlane/ArduPlane.cpp

@@ -85,6 +85,7 @@ const AP_Scheduler::Task Plane::scheduler_tasks[] = {
     SCHED_TASK(update_is_flying_5Hz,    5,    100),
     SCHED_TASK(dataflash_periodic,     50,    400),
     SCHED_TASK(adsb_update,            10,    100),
+    SCHED_TASK(button_update,           5,    100),
 };
 
 void Plane::setup() 

ArduPlane/Parameters.cpp

@@ -1357,9 +1357,25 @@ const AP_Param::Info Plane::var_info[] = {
     // @Path: ../libraries/AP_Notify/AP_Notify.cpp
     GOBJECT(notify, "NTF_",  AP_Notify),
 
+    // @Group: 
+    // @Path: Parameters.cpp
+    GOBJECT(g2, "",  ParametersG2),
+    
     AP_VAREND
 };
 
+/*
+  2nd group of parameters
+ */
+const AP_Param::GroupInfo ParametersG2::var_info[] = {
+
+    // @Group: BTN_
+    // @Path: ../libraries/AP_Button/AP_Button.cpp
+    AP_SUBGROUPINFO(button, "BTN_", 1, ParametersG2, AP_Button),
+
+    AP_GROUPEND
+};
+
 /*
   This is a conversion table from old parameter values to new
   parameter names. The startup code looks for saved values of the old

ArduPlane/Parameters.h

@@ -50,6 +50,7 @@ public:
         k_param_software_type,
         k_param_num_resets,
         k_param_NavEKF2,
+        k_param_g2,
 
         // Misc
         //
@@ -568,4 +569,18 @@ public:
         {}
 };
 
+/*
+  2nd block of parameters, to avoid going past 256 top level keys
+ */
+class ParametersG2 {
+public:
+    ParametersG2(void) { AP_Param::setup_object_defaults(this, var_info); }
+
+    // var_info for holding Parameter information
+    static const struct AP_Param::GroupInfo var_info[];
+
+    // button reporting library
+    AP_Button button;
+};
+
 extern const AP_Param::Info var_info[];

ArduPlane/Plane.h

@@ -88,6 +88,7 @@
 #include <AP_RSSI/AP_RSSI.h>                   // RSSI Library
 #include <AP_Parachute/AP_Parachute.h>
 #include <AP_ADSB/AP_ADSB.h>
+#include <AP_Button/AP_Button.h>
 
 #include "GCS_Mavlink.h"
 #include "quadplane.h"
@@ -146,8 +147,9 @@ private:
     AP_Vehicle::FixedWing aparm;
     AP_HAL::BetterStream* cliSerial;
 
-    // Global parameters are all contained within the 'g' class.
+    // Global parameters are all contained within the 'g' and 'g2' classes.
     Parameters g;
+    ParametersG2 g2;
 
     // main loop scheduler
     AP_Scheduler scheduler;
@@ -638,7 +640,6 @@ private:
         Location prev_wp;
     } adsb_state;
 
-
     // Outback Challenge Failsafe Support
 #if OBC_FAILSAFE == ENABLED
     APM_OBC obc {mission, barometer, gps, rcmap};
@@ -955,6 +956,7 @@ private:
     void read_battery(void);
     void read_receiver_rssi(void);
     void rpm_update(void);
+    void button_update(void);
     void report_radio();
     void report_ins();
     void report_compass();

ArduPlane/sensors.cpp

@@ -156,3 +156,11 @@ void Plane::rpm_update(void)
         }
     }
 }
+
+/*
+  update AP_Button
+ */
+void Plane::button_update(void)
+{
+    g2.button.update();
+}