初始提交卡包 USB 工程

纳入固件源码、屏幕组件、nand_xfer 工具和文档。忽略本机构建产物、sdkconfig，以及含本机路径的依赖锁。

Co-authored-by: Cursor <cursoragent@cursor.com>

main/BLE/ble_send.h

@@ -0,0 +1,38 @@
+#ifndef __BLE_SEND_H__
+#define __BLE_SEND_H__
+
+#include <stdint.h>
+#include <stdio.h>
+
+extern volatile uint8_t g_brightness;
+
+void send_emoji_delete_result_frame(uint8_t success);
+void send_emoji_clear_result_frame(uint8_t success);
+void send_emoji_switch_result_frame(uint8_t success);
+void send_emoji_download_result_frame(uint8_t success);
+void send_downloaded_packs_frame(void);
+void send_version_frame(const char *version_str);
+void send_ota_progress_frame(uint8_t progress);
+void send_ota_result_frame(uint8_t result);
+void ble_send_ota_progress(uint8_t progress);
+void ble_send_ota_result_request(uint8_t success);
+void send_get_system_ok_frame(void);
+void send_brightness_frame(uint8_t brightness);
+void send_emoji_using_frame(uint8_t pack_id);
+
+void send_wifi_state_frame(uint8_t state);
+void ble_send_wifi_state_request(uint8_t connected);
+/** 请求发送当前亮度单帧（0x0005），由 notification_task 调用 send_protocol_frame */
+void ble_request_send_brightness(void);
+void ble_set_emoji_switch_target(char pack_id);
+void ble_set_emoji_delete_target(char pack_id);
+void send_version_frame(const char *version_str);
+void send_ota_progress_frame(uint8_t progress);
+void send_ota_result_frame(uint8_t result);
+void robot_sleep_frame(uint8_t state);
+void robot_wake_frame(uint8_t state);
+
+
+void notification_task(void *arg);
+
+#endif