topic RD33771CNTREVM + FreeMASTER project in S32K

RD33771CNTREVM + FreeMASTER project

Marvin_Gjepali — Thu, 30 Jul 2026 07:49:12 GMT

Hi,

I am currently evaluating the RD33771CNTREVM (HV Battery Management System) reference design board.

According to the User Manual (UM11310), the board outputs raw register data via the CAN0 interface (connector J12). While I can read the raw hexadecimal messages using a standard CAN-USB interface, I am looking for a more efficient way to visualize the cell voltages and temperatures in real-time.

I noticed that for a similar silicon combination (S32K144 + MC33771C), NXP provides the BCC_S32K144_FreeMASTER example project within the BCC SW Driver Package.

Before I start modifying the pin routing and porting this generic example to match the specific hardware layout of the RD33771CNTREVM, I would like to ask:

Does NXP have a dedicated FreeMASTER project (.pmp / .pmpx) and the corresponding .elf firmware specifically tailored for the RD33771CNTREVM board?

Thank you for the support.

Re: RD33771CNTREVM + FreeMASTER project

JozefKozon — Fri, 31 Jul 2026 08:38:58 GMT

Hi Marvin,

I have found an answer from an application team to another customer who requested FreeMASTER example for the RD33771CNTREVM. Unfortunately we do not have any. We have only the EvalGUI. See the answer below. You can download the EvalGUI from the MC33771C product page. It is publicly available.

I apologize for inconvenience.

DESCRIPTION

Unfortunately that is correct, the FreeMaster interface going with the example code has been developed for one node only. As is, it would not work with 4 nodes, only the first one would be initialized and monitored.

For this distributed platform, the only GUI available for more than one node would be the EvalGUI 5.15..

With Best Regards,

Jozef

Re: RD33771CNTREVM + FreeMASTER project

Marvin_Gjepali — Fri, 31 Jul 2026 09:22:59 GMT

Hi Jozef,

Thank your the answer. I tried the EvalGUI 5.15, but it lags on Windows 11 and it works only with COM port. RD33771CNTREVM has CAN output...

I'll see if I can get the RX and TX signals out of the PCB. Then I could modify the original FW for the development kit to have the same input / output messages that EvalGUI 5.15 expects.

But I would still expect either PC SW or a FreeMASTER project for the development kit. That would be very helpful.

Re: RD33771CNTREVM + FreeMASTER project

JozefKozon — Fri, 31 Jul 2026 11:00:05 GMT

Hi Marvin,

currently there isn't any other software, apart from the software which you can find in the MC33771C and in the RD33771CNTREVM product pages. And since the MC33771C is an old product, although still in production, there probably will not be a new software. We have newer BCCs. For a new design I would rather recommend you one from the 24 or 26 Channels BCCs. BMA7x2x family. This are the latest BCC components.

https://www.nxp.com/products/product-selector:PRODUCT-SELECTOR?category=c40_c328&page=1&nrnd=false

With Best Regards,

Jozef