AP_Arming: use ArmingMethod enumeration

libraries/AP_Arming/AP_Arming.cpp

@@ -541,7 +541,7 @@ bool AP_Arming::board_voltage_checks(bool report)
 bool AP_Arming::pre_arm_checks(bool report)
 {
 #if !APM_BUILD_TYPE(APM_BUILD_ArduCopter)
-    if (armed || require == NONE) {
+    if (armed || require == NO) {
         // if we are already armed or don't need any arming checks
         // then skip the checks
         return true;
@@ -560,7 +560,7 @@ bool AP_Arming::pre_arm_checks(bool report)
         &  board_voltage_checks(report);
 }
 
-bool AP_Arming::arm_checks(uint8_t method)
+bool AP_Arming::arm_checks(ArmingMethod method)
 {
     // ensure the GPS drivers are ready on any final changes
     if ((checks_to_perform & ARMING_CHECK_ALL) ||
@@ -585,7 +585,7 @@ bool AP_Arming::arm_checks(uint8_t method)
 }
 
 //returns true if arming occurred successfully
-bool AP_Arming::arm(uint8_t method, const bool do_arming_checks)
+bool AP_Arming::arm(AP_Arming::ArmingMethod method, const bool do_arming_checks)
 {
 #if APM_BUILD_TYPE(APM_BUILD_ArduCopter)
     // Copter should never use this function

libraries/AP_Arming/AP_Arming.h

@@ -34,9 +34,10 @@ public:
     };
 
     enum ArmingMethod {
-        NONE = 0,
         RUDDER,
-        MAVLINK
+        MAVLINK,
+        AUXSWITCH,
+        MOTORTEST,
     };
 
     enum ArmingRequired {
@@ -47,7 +48,7 @@ public:
 
     // these functions should not be used by Copter which holds the armed state in the motors library
     ArmingRequired arming_required();
-    virtual bool arm(uint8_t method, bool do_arming_checks=true);
+    virtual bool arm(ArmingMethod method, bool do_arming_checks=true);
     bool disarm();
     bool is_armed();
 
@@ -61,7 +62,7 @@ public:
     // some arming checks have side-effects, or require some form of state
     // change to have occurred, and thus should not be done as pre-arm
     // checks.  Those go here:
-    bool arm_checks(uint8_t method);
+    bool arm_checks(ArmingMethod method);
 
     // get expected magnetic field strength
     uint16_t compass_magfield_expected() const;