SITL: add parameter MAG_DEVID in SITL

libraries/SITL/SITL.cpp

@@ -217,10 +217,19 @@ const AP_Param::GroupInfo SITL::var_info2[] = {
 const AP_Param::GroupInfo SITL::var_info3[] = {
     AP_GROUPINFO("ODOM_ENABLE",   1, SITL,  odom_enable, 0),
     AP_GROUPINFO("GPS2_POS",      2, SITL,  gps_pos_offset[1], 0),
+    AP_GROUPINFO("MAG1_DEVID",    3, SITL,  mag_devid[0], 97539),    
+    AP_GROUPINFO("MAG2_DEVID",    4, SITL,  mag_devid[1], 131874),
+    AP_GROUPINFO("MAG3_DEVID",    5, SITL,  mag_devid[2], 263178),
+    AP_GROUPINFO("MAG4_DEVID",    6, SITL,  mag_devid[3], 97283),    
+    AP_GROUPINFO("MAG5_DEVID",    7, SITL,  mag_devid[4], 97795),
+    AP_GROUPINFO("MAG6_DEVID",    8, SITL,  mag_devid[5], 98051),
+    AP_GROUPINFO("MAG7_DEVID",    9, SITL,  mag_devid[6], 0),
+    AP_GROUPINFO("MAG8_DEVID",    10, SITL,  mag_devid[7], 0),
+
     AP_GROUPEND
+
 };
     
-
 /* report SITL state via MAVLink */
 void SITL::simstate_send(mavlink_channel_t chan)
 {

libraries/SITL/SITL.h

@@ -7,7 +7,7 @@
 #include <AP_Math/AP_Math.h>
 #include <GCS_MAVLink/GCS_MAVLink.h>
 #include <AP_Common/Location.h>
-
+#include <AP_Compass/AP_Compass.h>
 #include "SIM_Buzzer.h"
 #include "SIM_Gripper_EPM.h"
 #include "SIM_Gripper_Servo.h"
@@ -185,6 +185,7 @@ public:
     AP_Int8 gps_hdg_enabled; // enable the output of a NMEA heading HDT sentence
     AP_Int32 loop_delay; // extra delay to add to every loop
     AP_Float mag_scaling; // scaling factor on first compasses
+    AP_Int32 mag_devid[MAX_CONNECTED_MAGS]; // Mag devid
 
     // EFI type
     enum EFIType {