feat: 移植腾讯云物联网开发平台 C SDK

components/connectivity/iot-hub-device-c-sdk/config/quectel/readme.md

@@ -0,0 +1,57 @@
+# 移远SDK适配
+
+1. 将该目录的内容拷贝到`ql-application\qcloud-iot-c-sdk`下，并将sdk放置在`ql-application\qcloud-iot-c-sdk\iot_c_sdk`目录下
+
+```c
+├── CMakeLists.txt
+├── config
+├── iot_c_sdk
+└── qcloud_iot_mqtt_demo.c
+```
+
+2. 修改相应的编译脚本
+
+- `core_export.list` 添加相应的函数
+
+    ```c
+    //md5
+    mbedtls_md5_init
+    mbedtls_md5_starts
+    mbedtls_md5_update
+    mbedtls_md5_finish
+
+    // 
+    mbedtls_ctr_drbg_free
+    mbedtls_entropy_free
+    mbedtls_ctr_drbg_init
+    mbedtls_entropy_init
+    mbedtls_ctr_drbg_seed
+    mbedtls_entropy_func
+    mbedtls_ctr_drbg_random
+    ```
+
+- `ql-application/CMakeLists.txt`修改
+
+    ```cmake
+    if(QL_APP_FEATURE_QCLOUD_IOT) 
+    add_subdirectory_if_exist(qcloud-iot-c-sdk)
+    endif()
+    ```
+
+- `ql-application/init/ql_init.c`修改
+
+    ```c
+    #ifdef QL_APP_FEATURE_QCLOUD_IOT
+    #include "qcloud_iot_common.h"
+    #include "qcloud_iot_hub.h"
+    #include "qcloud_iot_explorer.h"
+    #endif
+    ```
+
+    ```c
+    #ifdef QL_APP_FEATURE_QCLOUD_IOT
+    //your application entry
+    extern int qcloud_iot_mqtt_demo(int argc, char **argv);
+    qcloud_iot_mqtt_demo(0, NULL);
+    #endif
+    ```