feat: Change battery change trigger reason

Author: loop233

examples/bluetooth/ble_remote_control/main/main.c

@@ -34,7 +34,7 @@
 
 bool is_connected = false;
 QueueHandle_t input_queue = NULL;
-
+static uint8_t s_battery_level = 0;
 const char *DEVICE_NAME = "ESP32 Remote";
 
 /**
@@ -76,7 +76,6 @@ void joystick_task()
     uint8_t hat_switch = 0; // unused in this example
     uint8_t button_in = 0;
     uint8_t throttle = 0;   // unused in this example
-    uint8_t battery_level = 0;
     while (true) {
         DELAY(HID_LATENCY);
 
@@ -121,8 +120,6 @@ void joystick_task()
             set_hid_report_values(x_axis, y_axis, button_in, hat_switch, throttle);
             print_user_input_report(x_axis, y_axis, hat_switch, button_in, throttle);
             ret = send_user_input();
-            battery_level = (battery_level + 1) % 100;
-            set_hid_battery_level(battery_level);
         }
 
         // Alternatively, to simply poll user input can do:
@@ -142,6 +139,18 @@ void joystick_task()
     }
 }
 
+static void battery_timer_cb(TimerHandle_t xTimer)
+{
+    s_battery_level = (s_battery_level + 1) % 100;
+    ESP_LOGI(HID_DEMO_TAG, "Change battery level to %d", s_battery_level);
+    if (is_connected) {
+        esp_err_t ret = set_hid_battery_level(s_battery_level);
+        if (ret != ESP_OK) {
+            ESP_LOGE(HID_DEMO_TAG, "Failed to set battery level");
+        }
+    }
+}
+
 /**
  * @brief Initialize bluetooth resources
  * @return ESP_OK on success; any other value indicates error
@@ -252,7 +261,10 @@ void app_main(void)
 #else //CONFIG_JOYSTICK_INPUT_MODE_ADC
     xTaskCreate(joystick_ext_read, "ext_hardware_joystick", 2048, NULL, tskIDLE_PRIORITY, NULL);
 #endif
-
+    TimerHandle_t  battery_timer = xTimerCreate(NULL, pdMS_TO_TICKS(5000), true, NULL, battery_timer_cb);
+    if (xTimerStart(battery_timer, 0) != pdPASS) {
+        ESP_LOGE(HID_DEMO_TAG, "Failed to start battery timer");
+    }
     // Main joystick task
     joystick_task();