Improvements for ws2812b_tester app

gpio/ws2812b_tester/README.md

@@ -23,6 +23,9 @@ This application has three submenu items:
 The "About" menu item contains information about the application.
 
 # Updates
+- Version 1.8
+  - Renamed app to fit on Flipper Zero main menu screen
+  - Improved initialization to only happen when configuring the LEDs
 - Version 1.7
   - Added blanking TRESET (LOW) signal before sending data to LEDs.
   - Increased timer_buffer to uint16 to support blanking signal duration.  Maybe there is a better way to do the initial low & save memory?

gpio/ws2812b_tester/app.c

@@ -249,6 +249,11 @@ static bool led_tester_custom_event_callback(void* context, uint32_t event) {
     LedTesterApp* app = (LedTesterApp*)context;
     const GpioPin* pin = setting_led_pin_values[app->model->led_pin_index];
 
+    if(!app->led_driver) {
+        FURI_LOG_E(TAG, "led_driver is NULL.  Custom event %lu ignored.", event);
+        return false;
+    }
+
     if(event == LedTesterEventTimer) {
         app->model->timer_counter++;
     }
@@ -344,6 +349,11 @@ static bool led_tester_custom_event_callback(void* context, uint32_t event) {
 
     led_driver_transmit(app->led_driver, false);
 
+    if(event == LedTesterEventDeinit) {
+        led_driver_free(app->led_driver);
+        app->led_driver = NULL;
+    }
+
     return true;
 }
 
@@ -362,6 +372,8 @@ void led_tester_enter_leds_callback(void* _context) {
     app->timer = furi_timer_alloc(led_tester_timer_callback, FuriTimerTypePeriodic, app);
     furi_timer_start(app->timer, 250);
     view_dispatcher_send_custom_event(app->view_dispatcher, LedTesterEventInitialized);
+    app->led_driver =
+        led_driver_alloc(MAX_LED_COUNT, setting_led_pin_values[app->model->led_pin_index]);
 }
 
 /**
@@ -432,8 +444,6 @@ static LedTesterApp* led_tester_app_alloc() {
     variable_item_set_current_value_index(item, setting_led_pin_index);
     variable_item_set_current_value_text(item, setting_led_pin_names[setting_led_pin_index]);
     app->model->led_pin_index = setting_led_pin_index;
-    app->led_driver =
-        led_driver_alloc(MAX_LED_COUNT, setting_led_pin_values[setting_led_pin_index]);
 
     // Count
     item = variable_item_list_add(
@@ -530,7 +540,6 @@ static LedTesterApp* led_tester_app_alloc() {
  * @param      app  The led tester application object.
 */
 static void led_tester_app_free(LedTesterApp* app) {
-    led_driver_free(app->led_driver);
     view_dispatcher_remove_view(app->view_dispatcher, LedTesterViewAbout);
     widget_free(app->widget_about);
     view_dispatcher_remove_view(app->view_dispatcher, LedTesterViewLeds);

gpio/ws2812b_tester/application.fam

@@ -1,9 +1,9 @@
 App(
     appid="ws2812b_tester_app",
-    name="WS2812B LED Tester App",
+    name="WS2812B LED Tester",
     apptype=FlipperAppType.EXTERNAL,
     entry_point="ws2812b_led_tester_app",
-    fap_version=(1, 7),
+    fap_version=(1, 8),
     stack_size=4 * 1024,
     requires=[
         "gui",