Added a timer to update the playing's music current position, will have to do a minor rework for it to be flawless.

src/W800_SDK_v1.00.10/app/gfx/gfx_task.c

@@ -556,6 +556,7 @@ void gfx_task(void *param)
 
     music_player_screen_init(&musicPlayerScreen);
     music_player_screen_register_music_playback_control_cb(&musicPlayerScreen, &(sendMusicPlaybackBLECommandCb));
+    music_player_screen_register_os_time_ms_ref_cb(&musicPlayerScreen, &(elapsed_ms));
 
     settings_screen_init(&settingsScreen);
     settings_screen_register_API_interface(&settingsScreen, &settingsScreenAPIInterface);

src/W800_SDK_v1.00.10/app/gfx/music_player_screen.c

@@ -70,6 +70,13 @@ static void music_player_button_click_event_cb(lv_event_t *e)
     }
 }
 
+static void track_position_update_cb(lv_timer_t *timer)
+{
+    MusicPlayerScreen_t *musicPlayerScreen = timer->user_data;
+
+    music_player_screen_set_music_position(musicPlayerScreen, ++musicPlayerScreen->currentMusicPosition);
+}
+
 void music_player_screen_init(MusicPlayerScreen_t * const musicPlayerScreen)
 {
     if(!musicPlayerScreen)
@@ -93,6 +100,17 @@ void music_player_screen_register_music_playback_control_cb(MusicPlayerScreen_t
     musicPlayerScreen->musicPlaybackCtrlCb = musicPlaybackCtrlCb;
 }
 
+void music_player_screen_register_os_time_ms_ref_cb(MusicPlayerScreen_t * const musicPlayerScreen, MusicPlayerTimeRefCb_t musicPlayerTimeRefCb)
+{
+    if(!musicPlayerScreen)
+    {
+        LV_LOG_ERROR("NULL pointer given !");
+        return;
+    }
+
+    musicPlayerScreen->musicPlayerTimeRefCb = musicPlayerTimeRefCb;
+}
+
 void music_player_screen_notify_BLE_connection_state(MusicPlayerScreen_t * const musicPlayerScreen, bool connected)
 {
     if(!musicPlayerScreen)
@@ -169,9 +187,13 @@ void music_player_screen_set_music_position(MusicPlayerScreen_t * const musicPla
         return;
     }
 
-    if(positionInSeconds > musicPlayerScreen->currentMusicDuration) positionInSeconds = musicPlayerScreen->currentMusicDuration;
+    positionInSeconds = positionInSeconds > musicPlayerScreen->currentMusicDuration ? musicPlayerScreen->currentMusicDuration : positionInSeconds;
-
     musicPlayerScreen->currentMusicPosition = positionInSeconds;
+
+    //Let's update the time ref
+    if(musicPlayerScreen->musicPlayerTimeRefCb)
+        musicPlayerScreen->osTimeRef = musicPlayerScreen->musicPlayerTimeRefCb();
+
     //If the widget is currently displayed, we update it as well !
     if(!musicPlayerScreen->playbackArc) return;
 
@@ -196,6 +218,11 @@ void music_player_screen_set_music_playing_state(MusicPlayerScreen_t * const mus
 
     musicPlayerScreen->currentPlayState = playingState;
 
+    if(musicPlayerScreen->currentPlayState == MUSIC_CONTROL_PLAY)
+        lv_timer_resume(musicPlayerScreen->timePositionTimer);
+    else
+        lv_timer_pause(musicPlayerScreen->timePositionTimer);
+
     if(!musicPlayerScreen->playPauseBtn.label) return;
 
     strcpy(musicPlayerScreen->playPauseBtn.icon, musicPlayerScreen->currentPlayState == MUSIC_CONTROL_PLAY ? LV_SYMBOL_PAUSE : LV_SYMBOL_PLAY);
@@ -387,11 +414,28 @@ void music_player_screen_create(MusicPlayerScreen_t * const musicPlayerScreen)
     lv_obj_align(musicPlayerScreen->playbackArc, LV_ALIGN_CENTER, 0,0);
     lv_obj_set_size(musicPlayerScreen->playbackArc, 240, 240);
     lv_obj_set_style_arc_color(musicPlayerScreen->playbackArc, lv_palette_main(LV_PALETTE_LIME), LV_PART_INDICATOR);
+    lv_obj_set_style_arc_color(musicPlayerScreen->playbackArc, lv_color_make(100,100,100), LV_PART_MAIN);
     music_player_screen_set_music_duration(musicPlayerScreen, musicPlayerScreen->currentMusicDuration);
-    music_player_screen_set_music_position(musicPlayerScreen, musicPlayerScreen->currentMusicPosition);
 
     _set_UI_no_ble_connection(musicPlayerScreen, musicPlayerScreen->ble_connection_state);
 
+    if(musicPlayerScreen->timePositionTimer)
+    {
+        LV_LOG_ERROR("timePositionTimer should be NULL here !");
+        lv_timer_del(musicPlayerScreen->timePositionTimer);
+        musicPlayerScreen->timePositionTimer = NULL;
+    }
+    musicPlayerScreen->timePositionTimer = lv_timer_create(&(track_position_update_cb), 1000, musicPlayerScreen);
+    //If the music was not currently playing, no need to start the music position update timer
+    if(musicPlayerScreen->currentPlayState != MUSIC_CONTROL_PLAY)
+    {
+        lv_timer_pause(musicPlayerScreen->timePositionTimer);
+    }
+    else if(musicPlayerScreen->musicPlayerTimeRefCb) //When we left the app, the music was running so we need to recompute the current position
+    {
+        musicPlayerScreen->currentMusicPosition += (musicPlayerScreen->musicPlayerTimeRefCb() - musicPlayerScreen->osTimeRef) / 1000; //We want seconds
+    }
+    music_player_screen_set_music_position(musicPlayerScreen, musicPlayerScreen->currentMusicPosition);
 
     //We register the event callback to handle gestures
     lv_obj_add_event_cb(musicPlayerScreen->display, &(gesture_event_cb), LV_EVENT_GESTURE, musicPlayerScreen);
@@ -406,7 +450,8 @@ void music_player_screen_destroy(MusicPlayerScreen_t * const musicPlayerScreen)
         LV_LOG_ERROR("NULL pointer given !");
         return;
     }
-
+    
+    lv_timer_del(musicPlayerScreen->timePositionTimer);
     memset(musicPlayerScreen, 0, offsetof(MusicPlayerScreen_t, musicPlaybackCtrlCb));
 }
 

src/W800_SDK_v1.00.10/app/gfx/music_player_screen.h

@@ -17,6 +17,7 @@ typedef enum MusicPlaybackCtrlAction
 } MusicPlaybackCtrlAction_e;
 
 typedef void (*MusicPlaybackCtrlCb_t)(MusicPlaybackCtrlAction_e musicPlaybackCtrlAction);
+typedef uint32_t (*MusicPlayerTimeRefCb_t)(void);
 
 typedef struct PlayerButton
 {
@@ -40,18 +41,20 @@ typedef struct MusicPlayerScreen
     lv_obj_t *nextBtn;
     lv_obj_t *volumeDownBtn;
     lv_obj_t *volumeUpBtn;
-
     lv_obj_t *playbackArc;
     lv_obj_t *titleLabel;
     lv_obj_t *artistLabel;
     TimeLabel_t positionTimeLabel, durationTimeLabel;
+    lv_timer_t *timePositionTimer;
     //Should not be erased attributes
     MusicPlaybackCtrlCb_t musicPlaybackCtrlCb;
+    MusicPlayerTimeRefCb_t musicPlayerTimeRefCb;
     MusicPlaybackCtrlAction_e currentPlayState;
-    char titleText[60];
-    char artistText[30];
     uint16_t currentMusicDuration; //The currently playing music's total duration in seconds.
     uint16_t currentMusicPosition; //The currently playing music's cursor position in seconds.
+    uint32_t osTimeRef; //Time reference used to compute the time elaspsed when the player is not running, but the song is playing.
+    char titleText[60];
+    char artistText[30];
     bool ble_connection_state;
 } MusicPlayerScreen_t;
 
@@ -59,6 +62,8 @@ void music_player_screen_init(MusicPlayerScreen_t * const musicPlayerScreen);
 
 void music_player_screen_register_music_playback_control_cb(MusicPlayerScreen_t * const musicPlayerScreen, MusicPlaybackCtrlCb_t musicPlaybackCtrlCb);
 
+void music_player_screen_register_os_time_ms_ref_cb(MusicPlayerScreen_t * const musicPlayerScreen, MusicPlayerTimeRefCb_t musicPlayerTimeRefCb);
+
 void music_player_screen_notify_BLE_connection_state(MusicPlayerScreen_t * const musicPlayerScreen, bool connected);
 
 void music_player_screen_set_playing_music_title_and_artist(MusicPlayerScreen_t * const musicPlayerScreen, const char *title, const char *artist);

src/lvgl_win_sim/lv_port_win_codeblocks/music_player_screen.c

@@ -175,8 +175,6 @@ void music_player_screen_set_music_position(MusicPlayerScreen_t * const musicPla
         return;
     }
 
-    LV_LOG_USER("%d %d", musicPlayerScreen->currentMusicPosition , musicPlayerScreen->currentMusicDuration);
-
     positionInSeconds = positionInSeconds > musicPlayerScreen->currentMusicDuration ? musicPlayerScreen->currentMusicDuration : positionInSeconds;
     musicPlayerScreen->currentMusicPosition = positionInSeconds;