Release 0.2.0: fix Display Options crash with voice prompts on

Screen Dim passed a plain literal ('100%'/'50%'/...) to
voicePromptsAppendLanguageString(), which derives the prompt index from the
string's offset within the language table; a foreign pointer produced a garbage
index and crashed (only with voice on). Route the value through
voicePromptsAppendString() instead. Also move the 3-bit dim level's high bit off
legacy option bit 2 to bit 29 and clamp the level against the option arrays.

Bump version to 0.2.0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,17 @@ single running list until the first versioned release.
 
 ## Unreleased
 
+_Nothing yet._
+
+## 0.2.0
+
+- **Fix crash** opening Display Options with **voice announcements on**: the Screen
+  Dim value ("100%"/"50%"/…) is a plain literal, but the shared menu code fed it to
+  `voicePromptsAppendLanguageString()`, which derives the prompt index from the
+  string's offset within the language table — a foreign pointer produced a garbage
+  index and crashed. The value now goes through `voicePromptsAppendString()`. Also
+  moved the dim-level high bit off a low legacy option bit (bit 2 → 29) and clamped
+  the level so it can never index past the option arrays.
 - **7-segment frequency font:** inactive segments are now off (background) instead
   of faintly lit — no dim "ghosting". "MHz" now matches the frequency colour, and
   there's 1px more space between the RX and TX frequency lines.

MDUV380_firmware/application/include/freetrxVersion.h

@@ -5,9 +5,9 @@
 #define _FREETRX_VERSION_H_
 
 #define FREETRX_VERSION_MAJOR   0
-#define FREETRX_VERSION_MINOR   1
+#define FREETRX_VERSION_MINOR   2
 #define FREETRX_VERSION_PATCH   0
 
-#define FREETRX_VERSION         "0.1.0"
+#define FREETRX_VERSION         "0.2.0"
 
 #endif // _FREETRX_VERSION_H_

MDUV380_firmware/application/include/functions/settings.h

@@ -129,7 +129,7 @@ typedef enum
 {
 	BIT_INVERSE_VIDEO               = (SETTINGS_BITS_BANK_0 | (1 << 0)),
 	BIT_PTT_LATCH                   = (SETTINGS_BITS_BANK_0 | (1 << 1)),
-	BIT_SCREEN_DIM_2                = (SETTINGS_BITS_BANK_0 | (1 << 2)), // high bit of the 3-bit screen-dim level
+	BIT_UNUSED_2                    = (SETTINGS_BITS_BANK_0 | (1 << 2)),
 	BIT_BATTERY_VOLTAGE_IN_HEADER   = (SETTINGS_BITS_BANK_0 | (1 << 3)),
 	BIT_SETTINGS_UPDATED            = (SETTINGS_BITS_BANK_0 | (1 << 4)),
 	BIT_TX_RX_FREQ_LOCK             = (SETTINGS_BITS_BANK_0 | (1 << 5)),
@@ -154,6 +154,7 @@ typedef enum
 #endif
 	BIT_SECONDARY_LANGUAGE          = (SETTINGS_BITS_BANK_0 | (1 << 19)),
 	BIT_SCREEN_DIM_1                = (SETTINGS_BITS_BANK_0 | (1 << 20)), // middle bit of the 3-bit screen-dim level
+	BIT_SCREEN_DIM_2                = (SETTINGS_BITS_BANK_0 | (1 << 29)), // high bit of the 3-bit screen-dim level (kept off low legacy bits)
 	BIT_DISPLAY_CHANNEL_DISTANCE    = (SETTINGS_BITS_BANK_0 | (1 << 21)),
 #if defined(PLATFORM_MD2017)
 	BIT_TRACKBALL_ENABLED           = (SETTINGS_BITS_BANK_0 | (1 << 22)),

MDUV380_firmware/application/source/functions/settings.c

@@ -607,7 +607,9 @@ bool settingsIsOptionBitSet(bitfieldOptions_t bit)
 // no new settings field (existing codeplugs keep both bits clear = SCREEN_DIM_OFF).
 uint8_t settingsGetScreenDimLevel(void)
 {
-	return (settingsIsOptionBitSet(BIT_SCREEN_DIM_0) ? 1 : 0) | (settingsIsOptionBitSet(BIT_SCREEN_DIM_1) ? 2 : 0) | (settingsIsOptionBitSet(BIT_SCREEN_DIM_2) ? 4 : 0);
+	uint8_t level = (settingsIsOptionBitSet(BIT_SCREEN_DIM_0) ? 1 : 0) | (settingsIsOptionBitSet(BIT_SCREEN_DIM_1) ? 2 : 0) | (settingsIsOptionBitSet(BIT_SCREEN_DIM_2) ? 4 : 0);
+	// Never return an out-of-range level: dimOpts[]/dimPercent[] are SCREEN_DIM_NUM long.
+	return (level < SCREEN_DIM_NUM) ? level : SCREEN_DIM_OFF;
 }
 
 void settingsSetScreenDimLevel(uint8_t level)

MDUV380_firmware/application/source/user_interface/menuDisplayOptions.c

@@ -249,9 +249,23 @@ static void updateScreen(bool isFirstRun)
 
 				case DISPLAY_SCREEN_DIM:
 					{
-						const char *dimOpts[] = { currentLanguage->off, "100%", "50%", "30%", "15%" };
+						// The "%" values are plain string literals, not currentLanguage entries,
+						// so they must go through rightSideVar -> voicePromptsAppendString().
+						// Passing them to voicePromptsAppendLanguageString() (as the shared code
+						// does for rightSideConst) would treat the pointer as an offset into the
+						// language table and crash when voice prompts are enabled. "Off" is a real
+						// language string, so it can stay in rightSideConst.
+						const char *dimOpts[] = { NULL, "100%", "50%", "30%", "15%" };
+						uint8_t dimLevel = settingsGetScreenDimLevel();
 						leftSide = "Screen Dim";
-						rightSideConst = dimOpts[settingsGetScreenDimLevel()];
+						if (dimLevel == SCREEN_DIM_OFF)
+						{
+							rightSideConst = currentLanguage->off;
+						}
+						else
+						{
+							snprintf(rightSideVar, SCREEN_LINE_BUFFER_SIZE, "%s", dimOpts[dimLevel]);
+						}
 					}
 					break;