AP_OSD: battery support improvements

adds airpseed temperatur item
adds secondary batt instance items
switches used capacities to Ah above 9999 mAh
volt / amp / distance symbols reworked and realigned to specific font styles

libraries/AP_OSD/AP_OSD.h

@@ -110,6 +110,9 @@ private:
     AP_OSD_Setting flightime{false, 23, 10};
     AP_OSD_Setting climbeff{false,0,0};
     AP_OSD_Setting eff{false, 22, 10};
+    AP_OSD_Setting atemp{false, 0, 0};
+    AP_OSD_Setting bat2_vlt{false, 0, 0};
+    AP_OSD_Setting bat2used{false, 0, 0};
 
     bool check_option(uint32_t option);
 
@@ -168,6 +171,9 @@ private:
     void draw_flightime(uint8_t x, uint8_t y);
     void draw_climbeff(uint8_t x, uint8_t y);
     void draw_eff(uint8_t x, uint8_t y);
+    void draw_atemp(uint8_t x, uint8_t y);
+    void draw_bat2_vlt(uint8_t x, uint8_t y);
+    void draw_bat2used(uint8_t x, uint8_t y);
 };
 
 class AP_OSD {
@@ -208,6 +214,7 @@ public:
     AP_Int8 warn_rssi;
     AP_Int8 warn_nsat;
     AP_Float warn_batvolt;
+    AP_Float warn_bat2volt;
     AP_Int8 msgtime_s;
 
     enum {

libraries/AP_OSD/AP_OSD_Screen.cpp

@@ -194,6 +194,18 @@ const AP_Param::GroupInfo AP_OSD_Screen::var_info[] = {
     // @Path: AP_OSD_Setting.cpp
     AP_SUBGROUPINFO(btemp, "BTEMP", 37, AP_OSD_Screen, AP_OSD_Setting),
 
+    // @Group: ATEMP
+    // @Path: AP_OSD_Setting.cpp
+    AP_SUBGROUPINFO(atemp, "ATEMP", 38, AP_OSD_Screen, AP_OSD_Setting),
+    
+    // @Group: BAT2VLT
+    // @Path: AP_OSD_Setting.cpp
+    AP_SUBGROUPINFO(bat2_vlt, "BAT2_VLT", 39, AP_OSD_Screen, AP_OSD_Setting),
+
+    // @Group: BAT2USED
+    // @Path: AP_OSD_Setting.cpp
+    AP_SUBGROUPINFO(bat2used, "BAT2USED", 40, AP_OSD_Screen, AP_OSD_Setting),
+    
     AP_GROUPEND
 };
 
@@ -287,6 +299,7 @@ AP_OSD_Screen::AP_OSD_Screen()
 #define SYM_DIST      0x22
 #define SYM_FLY       0x9C
 #define SYM_EFF       0xF2
+#define SYM_AH        0xF3
 
 void AP_OSD_Screen::set_backend(AP_OSD_Backend *_backend)
 {
@@ -919,6 +932,38 @@ void AP_OSD_Screen::draw_btemp(uint8_t x, uint8_t y)
     backend->write(x, y, false, "%3d%c", (int)u_scale(TEMPERATURE, btmp), u_icon(TEMPERATURE));
 }
 
+void AP_OSD_Screen::draw_atemp(uint8_t x, uint8_t y)
+{
+    AP_Airspeed *airspeed = AP_Airspeed::get_singleton();
+    float temperature;
+    airspeed->get_temperature(temperature);
+    if (airspeed->healthy()) {
+        backend->write(x, y, false, "%3d%c", (int)u_scale(TEMPERATURE, temperature), u_icon(TEMPERATURE));
+    } else {
+        backend->write(x, y, false, "--%c", u_icon(TEMPERATURE));
+    }
+}
+
+void AP_OSD_Screen::draw_bat2_vlt(uint8_t x, uint8_t y)
+{
+    AP_BattMonitor &battery = AP_BattMonitor::battery();
+    uint8_t pct2 = battery.capacity_remaining_pct(1);
+    uint8_t p2 = (100 - pct2) / 16.6;
+    float v2 = battery.voltage(1);
+    backend->write(x,y, v2 < osd->warn_bat2volt, "%c%2.1f%c", SYM_BATT_FULL + p2, v2, SYM_VOLT);
+}
+
+void AP_OSD_Screen::draw_bat2used(uint8_t x, uint8_t y)
+{
+    AP_BattMonitor &battery = AP_BattMonitor::battery();
+    float ah = battery.consumed_mah(1) / 1000;
+    if (battery.consumed_mah(1) <= 9999) {
+        backend->write(x,y, false, "%4d%c", (int)battery.consumed_mah(1), SYM_MAH);
+    } else {
+        backend->write(x,y, false, "%2.2f%c", ah, SYM_AH);
+    }
+}
+
 #define DRAW_SETTING(n) if (n.enabled) draw_ ## n(n.xpos, n.ypos)
 
 void AP_OSD_Screen::draw(void)
@@ -937,9 +982,11 @@ void AP_OSD_Screen::draw(void)
     DRAW_SETTING(waypoint);
     DRAW_SETTING(xtrack_error);
     DRAW_SETTING(bat_volt);
+    DRAW_SETTING(bat2_vlt);
     DRAW_SETTING(rssi);
     DRAW_SETTING(current);
     DRAW_SETTING(batused);
+    DRAW_SETTING(bat2used);
     DRAW_SETTING(sats);
     DRAW_SETTING(fltmode);
     DRAW_SETTING(gspeed);
@@ -953,6 +1000,7 @@ void AP_OSD_Screen::draw(void)
     DRAW_SETTING(pitch_angle);
     DRAW_SETTING(temp);
     DRAW_SETTING(btemp);
+    DRAW_SETTING(atemp);
     DRAW_SETTING(hdop);
     DRAW_SETTING(flightime);