AP_BattMonitor: support Disco battery monitoring

libraries/AP_BattMonitor/AP_BattMonitor.cpp

@@ -155,7 +155,7 @@ AP_BattMonitor::init()
         return;
     }
 
-#if CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_BEBOP
+#if CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_BEBOP || CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_DISCO
     // force monitor for bebop
     _monitoring[0] = BattMonitor_TYPE_BEBOP;
 #endif
@@ -180,7 +180,7 @@ AP_BattMonitor::init()
                 _num_instances++;
                 break;
             case BattMonitor_TYPE_BEBOP:
-#if CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_BEBOP
+#if CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_BEBOP || CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_DISCO
                 state[instance].instance = instance;
                 drivers[instance] = new AP_BattMonitor_Bebop(*this, instance, state[instance]);
                 _num_instances++;

libraries/AP_BattMonitor/AP_BattMonitor_Bebop.cpp

@@ -18,10 +18,11 @@
 #include <AP_HAL/AP_HAL.h>
 
 #if CONFIG_HAL_BOARD == HAL_BOARD_LINUX && \
-    CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_BEBOP
+    (CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_BEBOP || CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_DISCO)
 
 #include "AP_BattMonitor_Bebop.h"
 #include <AP_HAL_Linux/RCOutput_Bebop.h>
+#include <AP_HAL_Linux/RCOutput_Disco.h>
 
 extern const AP_HAL::HAL& hal;
 
@@ -143,7 +144,11 @@ void AP_BattMonitor_Bebop::read(void)
     BebopBLDC_ObsData data;
     float remaining, vbat, vbat_raw;
 
+#if CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_BEBOP
     auto rcout = Linux::RCOutput_Bebop::from(hal.rcout);
+#elif CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_DISCO
+    auto rcout = Linux::RCOutput_Disco::from(hal.rcout);
+#endif
     tnow = AP_HAL::micros();
 
     ret = rcout->read_obs_data(data);