Initial commit: CCU621_M firmware project with BLE debug link support.

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

Third_party/sdkEng/dev_model/dm_ota.h

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2015-2018 Alibaba Group Holding Limited
+ */
+
+
+
+#ifndef _DM_OTA_H_
+#define _DM_OTA_H_
+
+typedef struct {
+    void *ota_handle;
+    char product_key[IOTX_PRODUCT_KEY_LEN + 1];
+    char device_name[IOTX_DEVICE_NAME_LEN + 1];
+} dm_ota_ctx_t;
+
+int dm_ota_init(void);
+int dm_ota_sub(void);
+int dm_ota_deinit(void);
+int dm_ota_get_ota_handle(void **handle);
+#ifdef DEVICE_MODEL_GATEWAY
+    #ifdef DEVICE_MODEL_SUBDEV_OTA
+        int dm_ota_switch_device(int devid);
+    #endif
+#endif
+#endif