App 2.22.1: gear badge shows only P; Logs list the raw gear codes

The badge said "D" for every gear that was not P, so N and R read as D.
EVHardware now passes on the raw gear code; the badge shows P for 1,
no letter for codes not yet mapped, "—" when unread. The Logs tab lists
each change of the code with time and speed, to match R, N and D on
the car. Emulator only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6

app/src/main/java/com/evsuite/abrp/Gear.java

@@ -0,0 +1,23 @@
+package com.evsuite.abrp;
+
+/**
+ * The gear letter for the dashboards, from the car's raw gear code.
+ *
+ * Only code 1 is known to be P (EVHardware, two head-unit apps and the reversing camera
+ * agree). The codes for R, N and D are not established yet, so any other code shows no letter
+ * rather than a guessed "D": the Logs tab lists the codes the car reports, for the driver to
+ * match them to the lever. Unread is "—".
+ */
+final class Gear {
+
+    static final int PARK = 1;
+
+    private Gear() {}
+
+    /** "P", "" for a gear not yet named, "—" when unread. */
+    static String label(Integer raw) {
+        if (raw == null) return "—";
+        if (raw == PARK) return "P";
+        return "";
+    }
+}

app/src/main/java/com/evsuite/abrp/GearLog.java

@@ -0,0 +1,63 @@
+package com.evsuite.abrp;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+/**
+ * Every change of the car's raw gear code with the time and speed, the last {@link #MAX_LINES},
+ * shown on the Logs tab. It is how the codes for R, N and D get matched to the lever: shift
+ * through them and read which code each one gave. Kept in preferences so the list survives
+ * the app being closed in between. Written only when the code changes.
+ */
+final class GearLog {
+
+    static final int MAX_LINES = 12;
+    private static final String PREFS = "gear_log";
+    private static final String KEY = "lines";
+
+    /** The last code seen in this process; MIN_VALUE before the first reading. */
+    private static int last = Integer.MIN_VALUE;
+
+    private GearLog() {}
+
+    /** Called with every reading; records a line when the code differs from the last one. */
+    static void note(Context context, Integer raw, Float speedKmh) {
+        int code = raw == null ? -1 : raw;
+        synchronized (GearLog.class) {
+            if (context == null || code == last) return;
+            last = code;
+            String line = new SimpleDateFormat("dd.MM. HH:mm:ss", Locale.US).format(new Date())
+                    + "  code " + (raw == null ? "unread" : String.valueOf(raw))
+                    + (raw != null && raw == Gear.PARK ? " (P)" : "")
+                    + "  at " + (speedKmh == null ? "—" : String.format(Locale.US, "%.0f km/h", speedKmh));
+            SharedPreferences prefs = context.getApplicationContext()
+                    .getSharedPreferences(PREFS, Context.MODE_PRIVATE);
+            List<String> lines = UpdateLog.append(split(prefs.getString(KEY, null)), line, MAX_LINES);
+            prefs.edit().putString(KEY, String.join("\n", lines)).apply();
+        }
+    }
+
+    /** The code now, null when unread or not read yet. */
+    static synchronized Integer current() {
+        return last < 0 ? null : last;
+    }
+
+    /** Newest first. */
+    static List<String> lines(Context context) {
+        SharedPreferences prefs = context.getApplicationContext()
+                .getSharedPreferences(PREFS, Context.MODE_PRIVATE);
+        return split(prefs.getString(KEY, null));
+    }
+
+    private static List<String> split(String stored) {
+        if (stored == null || stored.isEmpty()) return new ArrayList<>();
+        return new ArrayList<>(Arrays.asList(stored.split("\n")));
+    }
+}

app/src/main/java/com/evsuite/abrp/MainActivity.java

@@ -1519,8 +1519,7 @@ public class MainActivity extends AppCompatActivity {
 
         Float power = s.getBatteryPowerKw();
         Float speed = s.getSpeedKmh();
-        Boolean parked = s.getParked();
-        cockpitPower.setValue(power, parked == null ? "—" : parked ? "P" : "D",
+        cockpitPower.setValue(power, Gear.label(s.getGearRaw()),
                 speed == null ? null : String.format(us, "%.0f", speed), getString(R.string.dash_unit_kmh),
                 power == null ? "—" : String.format(us, "%.1f kW", power), null);
         cockpitTrace.add(android.os.SystemClock.elapsedRealtime(), power);
@@ -1554,8 +1553,7 @@ public class MainActivity extends AppCompatActivity {
                 fmt(s.getRangeKm(), "%.0f km"));
         dashBatteryBar.setSoc(soc);
         dashBatteryText.setText(fmt(soc, "%.0f %%"));
-        Boolean parked = s.getParked();
-        dashGear.setText(parked == null ? "—" : parked ? "P" : "D");
+        dashGear.setText(Gear.label(s.getGearRaw()));
         dashClimate.setText(fmt(s.getClimate().getDriverTargetCelsius(), "%.0f °C"));
     }
 
@@ -1577,6 +1575,7 @@ public class MainActivity extends AppCompatActivity {
             vehTireFr.setText(unit.format(s.getTirePressures().getFrontRightKpa()));
             vehTireRl.setText(unit.format(s.getTirePressures().getRearLeftKpa()));
             vehTireRr.setText(unit.format(s.getTirePressures().getRearRightKpa()));
+            GearLog.note(this, s.getGearRaw(), s.getSpeedKmh());
             showDashboard(s);
             showCockpit(s);
         } catch (Throwable ignored) {
@@ -1901,6 +1900,14 @@ public class MainActivity extends AppCompatActivity {
         // Update steps first: after a failed install, they are what the driver came here for.
         java.util.List<String> updates = UpdateLog.lines(this);
         StringBuilder sb = new StringBuilder();
+        // The car's gear codes, for matching R, N and D to the lever (only P = 1 is known).
+        java.util.List<String> gears = GearLog.lines(this);
+        if (!gears.isEmpty()) {
+            Integer now = GearLog.current();
+            sb.append(getString(R.string.gear_log_title, now == null ? "—" : String.valueOf(now)));
+            for (String line : gears) sb.append('\n').append(line);
+            sb.append("\n\n");
+        }
         if (!updates.isEmpty()) {
             sb.append(getString(R.string.update_log_title));
             for (String line : updates) sb.append('\n').append(line);

app/src/main/java/com/evsuite/abrp/RingView.java

@@ -239,7 +239,7 @@ public final class RingView extends View {
         }
 
         // Inside: the label on top in a pill, the value, the unit, the captions.
-        if (top != null) {
+        if (top != null && !top.isEmpty()) {
             topPaint.setTextSize(r * (topPill ? 0.11f : 0.075f));
             topPaint.setLetterSpacing(topPill ? 0f : 0.16f);
             float ty = cy - r * 0.40f;

app/src/main/res/values/strings.xml

@@ -187,6 +187,7 @@
     <string name="label_call_log">Recent uploads</string>
     <string name="call_log_empty">No upload attempted yet.</string>
     <string name="update_log_title">Updates, newest first:</string>
+    <string name="gear_log_title">Gear codes, newest first (now: %1$s; only 1 = P is known):</string>
     <string name="btn_flush_now">Upload now</string>
     <string name="status_starting">Starting…</string>
     <string name="status_running_no_upload">Running — waiting for first upload</string>

app/src/test/java/com/evsuite/abrp/GearTest.java

@@ -0,0 +1,22 @@
+package com.evsuite.abrp;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+/** The gear letter — pure JVM. */
+public class GearTest {
+
+    @Test
+    public void onlyParkIsNamed() {
+        assertEquals("P", Gear.label(1));
+        assertEquals("", Gear.label(2));
+        assertEquals("", Gear.label(3));
+        assertEquals("", Gear.label(4));
+    }
+
+    @Test
+    public void unreadIsADash() {
+        assertEquals("—", Gear.label(null));
+    }
+}