# CAN\_P1\_DRIVER parameter is missing

**URL:** <https://discuss.cubepilot.org/t/can-p1-driver-parameter-is-missing/16259>\
**Category:** HereFlow\
**Created:** [1 September 2025 07:05 UTC](https://discuss.cubepilot.org/t/can-p1-driver-parameter-is-missing/16259 "2025-09-01T07:05:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Chris\_Zhang1](https://discuss.cubepilot.org/letter_avatar_proxy/v4/letter/c/779978/32.png) [@Chris\_Zhang1](https://discuss.cubepilot.org/u/Chris_Zhang1)\
**Post date:** [1 September 2025 07:05 UTC](https://discuss.cubepilot.org/t/can-p1-driver-parameter-is-missing/16259/1 "2025-09-01T07:05:12Z")

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Hello,

I am using HereFlow sensor in px4\_fmu-v6c project. Now I can’t find “CAN\_P1\_DRIVER” parameter to enable CAN driver, so HereFlow sensor can’t be found in MissionPlanner.  
Also “RNGFND\_TYPE” “FLOW\_TYPE” also missing.  
Below is PX4 version information:  
PX4 version: 1.16.0 c0 (17825984)  
PX4 git-branch: main  
OS: NuttX  
OS version: Release 11.0.0 (184549631)

please help find the reason.

Thanks.

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<div class="post-metadata">

**Author:** ![xfacta](https://discuss.cubepilot.org/letter_avatar_proxy/v4/letter/x/5f8ce5/32.png) [@xfacta](https://discuss.cubepilot.org/u/xfacta)\
**Post date:** [12 September 2025 07:50 UTC](https://discuss.cubepilot.org/t/can-p1-driver-parameter-is-missing/16259/2 "2025-09-12T07:50:15Z")

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The listed parameters are for Ardupilot.  
Since you are using PX4 check in the reference for PX4

> **[Parameter Reference | PX4 Guide (main)](https://docs.px4.io/main/en/advanced_config/parameter_reference.html)**
>
> PX4 User and Developer Guide