Plane: use new board_voltage() method

ArduPlane/ArduPlane.pde

@@ -314,8 +314,6 @@ static AP_SpdHgtControl *SpdHgt_Controller = &TECS_controller;
 // a pin for reading the receiver RSSI voltage. 
 static AP_HAL::AnalogSource *rssi_analog_source;
 
-static AP_HAL::AnalogSource *vcc_pin;
-
 ////////////////////////////////////////////////////////////////////////////////
 // Sonar
 ////////////////////////////////////////////////////////////////////////////////
@@ -757,8 +755,6 @@ void setup() {
 
     rssi_analog_source = hal.analogin->channel(ANALOG_INPUT_NONE);
 
-    vcc_pin = hal.analogin->channel(ANALOG_INPUT_BOARD_VCC);
-
     init_ardupilot();
 
     // initialise the main loop scheduler

ArduPlane/GCS_Mavlink.pde

@@ -532,7 +532,7 @@ static void NOINLINE send_hwstatus(mavlink_channel_t chan)
 {
     mavlink_msg_hwstatus_send(
         chan,
-        board_voltage(),
+        hal.analogin->board_voltage()*1000,
         hal.i2c->lockup_count());
 }
 

ArduPlane/Log.pde

@@ -441,7 +441,7 @@ static void Log_Write_Current()
         throttle_in             : channel_throttle->control_in,
         battery_voltage         : (int16_t)(battery.voltage() * 100.0),
         current_amps            : (int16_t)(battery.current_amps() * 100.0),
-        board_voltage           : board_voltage(),
+        board_voltage           : (uint16_t)(hal.analogin->board_voltage()*1000),
         current_total           : battery.current_total_mah()
     };
     DataFlash.WriteBlock(&pkt, sizeof(pkt));

ArduPlane/system.pde

@@ -535,15 +535,6 @@ static void check_usb_mux(void)
 }
 
 
-/*
- * Read Vcc vs 1.1v internal reference
- */
-uint16_t board_voltage(void)
-{
-    return vcc_pin->voltage_latest() * 1000;
-}
-
-
 static void
 print_flight_mode(AP_HAL::BetterStream *port, uint8_t mode)
 {