Added voice feedback for the M17 Settings Menu:

1. Added vp_announceBuffer to speak a prompt, edit mode and string buffer.
2. Added logic to the vp_announceScreen for m17Settings read-only mode.
3. Added logic for handling edit mode.
4. Removed vpCaps flag from several places because it is irrelevant when input only supports caps.

openrtx/include/core/voicePromptUtils.h

@@ -202,6 +202,13 @@ void vp_announceSettingsInt(const char* const* stringTableStringPtr,
  */
 void vp_announceScreen(uint8_t ui_screen);
 
+/**
+ * This function is called from  ui_updateFSM to speak string buffers.
+ */
+void vp_announceBuffer(const char* const* stringTableStringPtr, bool editMode,
+                       const char* buffer);
+
+
 /**
  *
  */

openrtx/src/core/voicePromptUtils.c

@@ -271,8 +271,7 @@ void vp_announceInputChar(const char ch)
 
     vp_flush();
 
-    uint8_t flags = vpAnnounceCaps
+    uint8_t flags = vpAnnounceSpace
-                  | vpAnnounceSpace
                   | vpAnnounceCommonSymbols
                   | vpAnnounceLessCommonSymbols;
 
@@ -749,9 +748,38 @@ void vp_announceScreen(uint8_t ui_screen)
     case SETTINGS_TIMEDATE:
         vp_announceSettingsTimeDate();
         break;
+    case SETTINGS_M17:
+        vp_announceBuffer(&currentLanguage->callsign,
+                          false, state.settings.callsign);
+        break;
     }    
 }
 
+void vp_announceBuffer(const char* const* stringTableStringPtr, bool editMode,
+                       const char* buffer)
+{
+    bool isPlaying=vp_isPlaying();
+    
+    vp_flush();
+    
+    if (!isPlaying)
+    {
+        vp_queueStringTableEntry(stringTableStringPtr);
+    
+        if (editMode)
+            vp_queuePrompt(PROMPT_EDIT);
+    }
+    
+    vpFlags_t flags= vpAnnounceCommonSymbols;
+    // add edit mode flags to adjust what is spoken.
+    if (editMode)
+        flags |= vpAnnounceLessCommonSymbols | vpAnnounceSpace | vpAnnounceASCIIValueForUnknownChars;
+    
+    vp_queueString(buffer, flags);
+    
+    vp_play();    
+}
+
 vpQueueFlags_t vp_getVoiceLevelQueueFlags()
 {
     uint8_t vpLevel = state.settings.vpLevel;

openrtx/src/ui/ui.c

@@ -1840,6 +1840,8 @@ void ui_updateFSM(bool *sync_rtx)
                         strncpy(state.settings.callsign, ui_state.new_callsign, 10);
                         ui_state.edit_mode = false;
                         *sync_rtx = true;
+                        vp_announceBuffer(&currentLanguage->callsign, 
+                                          false, state.settings.callsign);
                     }
                     else if(msg.keys & KEY_ESC)
                         // Discard selected callsign and disable input mode
@@ -1849,6 +1851,12 @@ void ui_updateFSM(bool *sync_rtx)
                         _ui_textInputDel(ui_state.new_callsign);
                     else if(input_isNumberPressed(msg))
                         _ui_textInputKeypad(ui_state.new_callsign, 9, msg, true);
+                    else if (msg.long_press && (msg.keys & KEY_F1) && (state.settings.vpLevel > vpBeep))
+                    {
+                        vp_announceBuffer(&currentLanguage->callsign, 
+                                          true, ui_state.new_callsign);
+                        f1Handled=true;
+                    }
                 }
                 else
                 {
@@ -1858,6 +1866,8 @@ void ui_updateFSM(bool *sync_rtx)
                         ui_state.edit_mode = true;
                         // Reset text input variables
                         _ui_textInputReset(ui_state.new_callsign);
+                        vp_announceBuffer(&currentLanguage->callsign, 
+                                          true, ui_state.new_callsign);
                     }
                     else if(msg.keys & KEY_ESC)
                         _ui_menuBack(MENU_SETTINGS);