Merge pull request #10431 from iNavFlight/MrD_Set-OSD-elements-precision

Allow the pilot to set the precision for altitude and distance in the OSD

Author: MrD-RC

docs/Settings.md

@@ -4582,6 +4582,26 @@ Value above which the OSD current consumption element will start blinking. Measu
 
 ---
 
+### osd_decimals_altitude
+
+Number of decimals for the altitude displayed in the OSD [3-5].
+
+| Default | Min | Max |
+| --- | --- | --- |
+| 3 | 3 | 5 |
+
+---
+
+### osd_decimals_distance
+
+Number of decimals for distance displayed in the OSD [3-5]. This includes distance from home, total distance, and distance remaining.
+
+| Default | Min | Max |
+| --- | --- | --- |
+| 3 | 3 | 5 |
+
+---
+
 ### osd_dist_alarm
 
 Value above which to make the OSD distance from home indicator blink (meters)
@@ -4948,7 +4968,7 @@ Number of digits used for mAh precision. Currently used by mAh Used and Battery
 
 | Default | Min | Max |
 | --- | --- | --- |
-| 4 | 4 | 6 |
+| 4 | 3 | 6 |
 
 ---
 

src/main/fc/settings.yaml

@@ -3566,6 +3566,20 @@ groups:
         field: main_voltage_decimals
         min: 1
         max: 2
+      - name: osd_decimals_altitude
+        description: "Number of decimals for the altitude displayed in the OSD [3-5]."
+        default_value: 3
+        field: decimals_altitude
+        type: uint8_t
+        min: 3
+        max: 5
+      - name: osd_decimals_distance
+        description: "Number of decimals for distance displayed in the OSD [3-5]. This includes distance from home, total distance, and distance remaining."
+        default_value: 3
+        field: decimals_distance
+        type: uint8_t
+        min: 3
+        max: 5
       - name: osd_coordinate_digits
         description: "Number of digits for the coordinates displayed in the OSD [8-11]."
         field: coordinate_digits
@@ -3719,7 +3733,8 @@ groups:
       - name: osd_mah_precision
         description: Number of digits used for mAh precision. Currently used by mAh Used and Battery Remaining Capacity
         field: mAh_precision
-        min: 4
+        default: 4
+        min: 3
         max: 6
         default_value: 4
       - name: osd_use_pilot_logo

src/main/io/osd.c

@@ -224,7 +224,7 @@ static bool osdDisplayHasCanvas;
 
 #define AH_MAX_PITCH_DEFAULT 20 // Specify default maximum AHI pitch value displayed (degrees)
 
-PG_REGISTER_WITH_RESET_TEMPLATE(osdConfig_t, osdConfig, PG_OSD_CONFIG, 12);
+PG_REGISTER_WITH_RESET_TEMPLATE(osdConfig_t, osdConfig, PG_OSD_CONFIG, 13);
 PG_REGISTER_WITH_RESET_FN(osdLayoutsConfig_t, osdLayoutsConfig, PG_OSD_LAYOUTS_CONFIG, 2);
 
 void osdStartedSaveProcess(void) {
@@ -259,10 +259,11 @@ bool osdIsNotMetric(void) {
  * prefixed by a a symbol to indicate the unit used.
  * @param dist Distance in centimeters
  */
-static void osdFormatDistanceSymbol(char *buff, int32_t dist, uint8_t decimals)
+static void osdFormatDistanceSymbol(char *buff, int32_t dist, uint8_t decimals, uint8_t digits)
 {
-    uint8_t digits = 3U;    // Total number of digits (including decimal point)
-    uint8_t sym_index = 3U; // Position (index) at buffer of units symbol
+    if (digits == 0)    // Total number of digits (including decimal point)
+        digits = 3U;
+    uint8_t sym_index = digits; // Position (index) at buffer of units symbol
     uint8_t symbol_m = SYM_DIST_M;
     uint8_t symbol_km = SYM_DIST_KM;
     uint8_t symbol_ft = SYM_DIST_FT;
@@ -485,13 +486,12 @@ static void osdFormatWindSpeedStr(char *buff, int32_t ws, bool isValid)
 */
 void osdFormatAltitudeSymbol(char *buff, int32_t alt)
 {
-    uint8_t totalDigits = 4U;
-    uint8_t digits = 4U;
-    uint8_t symbolIndex = 4U;
+    uint8_t digits = osdConfig()->decimals_altitude;
+    uint8_t totalDigits = digits + 1;
+    uint8_t symbolIndex = digits + 1;
     uint8_t symbolKFt = SYM_ALT_KFT;
 
     if (alt >= 0) {
-        digits = 3U;
         buff[0] = ' ';
     }
 
@@ -806,7 +806,7 @@ static const char * osdArmingDisabledReasonMessage(void)
                 case NAV_ARMING_BLOCKER_NAV_IS_ALREADY_ACTIVE:
                     return OSD_MESSAGE_STR(OSD_MSG_DISABLE_NAV_FIRST);
                 case NAV_ARMING_BLOCKER_FIRST_WAYPOINT_TOO_FAR:
-                    osdFormatDistanceSymbol(buf, distanceToFirstWP(), 0);
+                    osdFormatDistanceSymbol(buf, distanceToFirstWP(), 0, 3);
                     tfp_sprintf(messageBuf, "FIRST WP TOO FAR (%s)", buf);
                     return message = messageBuf;
                 case NAV_ARMING_BLOCKER_JUMP_WAYPOINT_ERROR:
@@ -1767,7 +1767,7 @@ static bool osdDrawSingleElement(uint8_t item)
         } else
 #endif
         {
-            if (osdFormatCentiNumber(buff, getMAhDrawn() * 100, 1000, 0, (mah_digits - 2), mah_digits, false)) {
+            if (osdFormatCentiNumber(buff, getMAhDrawn() * 100, 1000, 0, 2, mah_digits, false)) {
                 // Shown in Ah
                 buff[mah_digits] = SYM_AH;
             } else {
@@ -1809,7 +1809,7 @@ static bool osdDrawSingleElement(uint8_t item)
             } else
 #endif
             {
-                if (osdFormatCentiNumber(buff, getBatteryRemainingCapacity() * 100, 1000, 0, (mah_digits - 2), mah_digits, false)) {
+                if (osdFormatCentiNumber(buff, getBatteryRemainingCapacity() * 100, 1000, 0, 2, mah_digits, false)) {
                     // Shown in Ah
                     buff[mah_digits] = SYM_AH;
                 } else {
@@ -1966,7 +1966,7 @@ static bool osdDrawSingleElement(uint8_t item)
         {
             buff[0] = SYM_HOME;
             uint32_t distance_to_home_cm = GPS_distanceToHome * 100;
-            osdFormatDistanceSymbol(&buff[1], distance_to_home_cm, 0);
+            osdFormatDistanceSymbol(&buff[1], distance_to_home_cm, 0, osdConfig()->decimals_distance);
 
             uint16_t dist_alarm = osdConfig()->dist_alarm;
             if (dist_alarm > 0 && GPS_distanceToHome > dist_alarm) {
@@ -1977,7 +1977,7 @@ static bool osdDrawSingleElement(uint8_t item)
 
     case OSD_TRIP_DIST:
         buff[0] = SYM_TOTAL;
-        osdFormatDistanceSymbol(buff + 1, getTotalTravelDistance(), 0);
+        osdFormatDistanceSymbol(buff + 1, getTotalTravelDistance(), 0, osdConfig()->decimals_distance);
         break;
 
     case OSD_BLACKBOX:
@@ -2096,7 +2096,7 @@ static bool osdDrawSingleElement(uint8_t item)
         {
             if (isWaypointNavTrackingActive()) {
                 buff[0] = SYM_CROSS_TRACK_ERROR;
-                osdFormatDistanceSymbol(buff + 1, navigationGetCrossTrackError(), 0);
+                osdFormatDistanceSymbol(buff + 1, navigationGetCrossTrackError(), 0, 3);
             } else {
                 displayWrite(osdDisplayPort, elemPosX, elemPosY, "     ");
                 return true;
@@ -2255,7 +2255,7 @@ static bool osdDrawSingleElement(uint8_t item)
                 buff[1] = '-';
                 buff[2] = '-';
             } else {
-                osdFormatDistanceSymbol(buff, range, 1);
+                osdFormatDistanceSymbol(buff, range, 1, 3);
             }
         }
         break;
@@ -2337,31 +2337,33 @@ static bool osdDrawSingleElement(uint8_t item)
         displayWriteChar(osdDisplayPort, elemPosX, elemPosY, SYM_FLIGHT_DIST_REMAINING);
 
         if ((!ARMING_FLAG(ARMED)) || (distanceMeters == -1)) {
-            buff[3] = SYM_BLANK;
-            buff[4] = '\0';
+            buff[osdConfig()->decimals_distance] = SYM_BLANK;
+            buff[osdConfig()->decimals_distance + 1] = '\0';
             strcpy(buff, "---");
         } else if (distanceMeters == -2) {
             // Wind is too strong to come back with cruise throttle
-            buff[0] = buff[1] = buff[2] = SYM_WIND_HORIZONTAL;
+            for (uint8_t i = 0; i < osdConfig()->decimals_distance; i++) {
+                buff[i] = SYM_WIND_HORIZONTAL;
+            }
             switch ((osd_unit_e)osdConfig()->units){
                 case OSD_UNIT_UK:
                     FALLTHROUGH;
                 case OSD_UNIT_IMPERIAL:
-                    buff[3] = SYM_DIST_MI;
+                    buff[osdConfig()->decimals_distance] = SYM_DIST_MI;
                     break;
                 case OSD_UNIT_METRIC_MPH:
                     FALLTHROUGH;
                 case OSD_UNIT_METRIC:
-                    buff[3] = SYM_DIST_KM;
+                    buff[osdConfig()->decimals_distance] = SYM_DIST_KM;
                     break;
                 case OSD_UNIT_GA:
-                    buff[3] = SYM_DIST_NM;
+                    buff[osdConfig()->decimals_distance] = SYM_DIST_NM;
                     break;
             }
-            buff[4] = '\0';
+            buff[osdConfig()->decimals_distance+1] = '\0';
             TEXT_ATTRIBUTES_ADD_BLINK(elemAttr);
         } else {
-            osdFormatDistanceSymbol(buff, distanceMeters * 100, 0);
+            osdFormatDistanceSymbol(buff, distanceMeters * 100, 0, osdConfig()->decimals_distance);
             if (distanceMeters == 0)
                 TEXT_ATTRIBUTES_ADD_BLINK(elemAttr);
         }
@@ -2903,7 +2905,7 @@ static bool osdDrawSingleElement(uint8_t item)
             buff[0] = SYM_GLIDE_DIST;
             if (glideSeconds > 0) {
                 uint32_t glideRangeCM = glideSeconds * gpsSol.groundSpeed;
-                osdFormatDistanceSymbol(buff + 1, glideRangeCM, 0);
+                osdFormatDistanceSymbol(buff + 1, glideRangeCM, 0, 3);
             } else {
                 tfp_sprintf(buff + 1, "%s%c", "---", SYM_BLANK);
                 buff[5] = '\0';
@@ -4058,6 +4060,8 @@ PG_RESET_TEMPLATE(osdConfig_t, osdConfig,
     .system_msg_display_time = SETTING_OSD_SYSTEM_MSG_DISPLAY_TIME_DEFAULT,
     .units = SETTING_OSD_UNITS_DEFAULT,
     .main_voltage_decimals = SETTING_OSD_MAIN_VOLTAGE_DECIMALS_DEFAULT,
+    .decimals_altitude = SETTING_OSD_DECIMALS_ALTITUDE_DEFAULT,
+    .decimals_distance = SETTING_OSD_DECIMALS_DISTANCE_DEFAULT,
     .use_pilot_logo = SETTING_OSD_USE_PILOT_LOGO_DEFAULT,
     .inav_to_pilot_logo_spacing = SETTING_OSD_INAV_TO_PILOT_LOGO_SPACING_DEFAULT,
     .arm_screen_display_time = SETTING_OSD_ARM_SCREEN_DISPLAY_TIME_DEFAULT,
@@ -5857,7 +5861,7 @@ textAttributes_t osdGetSystemMessage(char *buff, size_t buff_size, bool isCenter
                 } else if (NAV_Status.state == MW_NAV_STATE_WP_ENROUTE) {
                     // Countdown display for remaining Waypoints
                     char buf[6];
-                    osdFormatDistanceSymbol(buf, posControl.wpDistance, 0);
+                    osdFormatDistanceSymbol(buf, posControl.wpDistance, 0, 3);
                     tfp_sprintf(messageBuf, "TO WP %u/%u (%s)", getGeoWaypointNumber(posControl.activeWaypointIndex), posControl.geoWaypointCount, buf);
                     messages[messageCount++] = messageBuf;
                 } else if (NAV_Status.state == MW_NAV_STATE_HOLD_TIMED) {

src/main/io/osd.h

@@ -394,6 +394,8 @@ typedef struct osdConfig_s {
 
     // Preferences
     uint8_t         main_voltage_decimals;
+    uint8_t         decimals_altitude;
+    uint8_t         decimals_distance;
     uint8_t         ahi_reverse_roll;
     uint8_t         ahi_max_pitch;
     uint8_t         crosshairs_style;                   // from osd_crosshairs_style_e
@@ -466,11 +468,11 @@ typedef struct osdConfig_s {
 #ifndef DISABLE_MSP_DJI_COMPAT
     bool            highlight_djis_missing_characters;  // If enabled, show question marks where there is no character in DJI's font to represent an OSD element symbol
 #endif
- #ifdef USE_ADSB
+#ifdef USE_ADSB
     uint16_t adsb_distance_warning;                     // in metres
     uint16_t adsb_distance_alert;                       // in metres
     uint16_t adsb_ignore_plane_above_me_limit;          // in metres
- #endif
+#endif
     uint8_t  radar_peers_display_time;                  // in seconds
 } osdConfig_t;