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PSDK/README.md

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+# DJI Payload SDK (PSDK)
+
+![](https://img.shields.io/badge/version-V3.5.0-yellow.svg)
+![](https://img.shields.io/badge/platform-linux_|_rtos-green.svg)
+![](https://img.shields.io/badge/license-MIT-blue.svg)
+
+## What is the DJI Payload SDK?
+
+The DJI Payload SDK(PSDK), is a development kit provided by DJI to support developers to develop payload that can be
+mounted on DJI drones. Combined with the X-Port, SkyPort or extension port adapter, developers can obtain the
+information or other resource from the drone. According to the software logic and algorithm framework designed by the
+developer, users could develop payload that can be mounted on DJI Drone, to perform actions they need, such as Automated
+Flight Controller, Payload Controller, Video Image Analysis Platform, Mapping Camera, Megaphone And Searchlight, etc.
+
+## Documentation
+
+For full documentation, please visit
+the [DJI Developer Documentation](https://developer.dji.com/doc/payload-sdk-tutorial/en/). Documentation
+regarding the code can be found in the [PSDK API Reference](https://developer.dji.com/doc/payload-sdk-api-reference/en/)
+section of the developer's website. Please visit
+the [Latest Version Information](https://developer.dji.com/doc/payload-sdk-tutorial/en/)
+to get the latest version information.
+
+## Latest Release
+
+PSDK 3.5.0 was released on 18 May 2023. This version of Payload SDK mainly add support for M350 RTK, also add some new features support and fixed some bugs. 
+Please refer to the release notes for detailed changes list.
+
+* Added support for new drone model Matrice 350 RTK
+* Matrice 300 RTK added support for DJI RC Plus
+* Added support for downloading media files in pieces on all drone models
+* Added support for Osal get random number callback interface on all drone model
+* Fixed issue with the black screen problem when uses third-party camera to playback video on M300 RTK and DJI smart controller screen combination
+* Fixed issue with failure of subscribing L1 camera code stream on M300 RTK
+* Fixed issue with failure of subscribing main camera code stream in dual control mode on M300 RTK
+* Fixed issue with local upgrade function of RTOS platform on Mavic 3E/3T
+* Fixed issue with the initialization failure of using PSDK Payload device and millimeter wave radar on M300 RTK
+* Fixed issue with custom HMS function on M300 RTK and X-Port combination
+* Fixed issue with invalid TTS option of speaker widget on M300 RTK
+* Fixed issue with downloading file list with high probability of failure when the camera photos are over 400 on M300 RTK
+* Fixed some of the memory leaks
+
+## License
+
+Payload SDK codebase is MIT-licensed. Please refer to the LICENSE file for detailed information.
+
+## Contributing
+
+Please read the following guidelines before starting work on a pull request.
+
+#### Summary of the guidelines:
+
+* One pull request per issue;
+* Choose the right base branch;
+* Clean up "oops" commits before submitting;
+* Follow the coding style by "doc/dji_sdk_code_style"
+
+## Support
+
+You can get official support from DJI and the community with the following methods:
+
+- Post questions on Developer Forum
+    * [DJI SDK Developer Forum(Cn)](https://djisdksupport.zendesk.com/hc/zh-cn/community/topics)
+    * [DJI SDK Developer Forum(En)](https://djisdksupport.zendesk.com/hc/en-us/community/topics)
+- Submit a request describing your problem on Developer Support
+    * [DJI SDK Developer Support(Cn)](https://djisdksupport.zendesk.com/hc/zh-cn/requests/new)
+    * [DJI SDK Developer Support(En)](https://djisdksupport.zendesk.com/hc/en-us/requests/new)
+
+You can also communicate with other developers by the following methods:
+
+- Post questions on [**Stackoverflow**](http://stackoverflow.com) using [**
+  dji-sdk**](http://stackoverflow.com/questions/tagged/dji-sdk) tag