# MCU-Link-MR NXP recommends using the commercially supported tools and programmers for S32K3 automotive processors as noted on the [nxp.com product webpages.](https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools-/mcu-link-debug-probe:MCU-LINK) However many opensource tools will work. ## Opensource tools In order to make the MR-CANHUBK344 more accessible, several opensource tools have been enabled. Do not expect the same level of performance as commercial tools. The opensource and low cost hardware programmer/debugger [*MCU-link* ](https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools-/mcu-link-debug-probe:MCU-LINK)and MCU-LINK-MR are able to run the software *PyOCD* software. This combination has been made to work with S32K344. \ This is a very low cost DIY option for hobbyists and students. Please be sure to read the documentation well in order to be successful. Support will generally not be available on NXP community when using these tools. {% hint style="warning" %} These tools are considered unsupported by NXP engineers for use with S32K344 processors. {% endhint %} ## MCU-Link ### MCU-LINK-MR Is an updated version of the MCU-link with Mobile Robotics connectors installed. This unit also provides a USB-C to UART connection over the DCD, DCD-LZ and Pixhawk debug connectors. More details on the [MCU link programmer/debugger may be found here.](https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools-/mcu-link-debug-probe:MCU-LINK) ## PyOCD Basic support for the S32K344 has been included in PyOCD. \ See the following pages for more detail on using PyOCD and MCU-LINK-MR together.\ The detailed documentation for this opensource project at the link below:\ {% embed url="" %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://nxp.gitbook.io/mr-canhubk344/getting-started/programming-with-opensource-tools/mcu-link-mr.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.