SensorsのトピックSeek help about MC33771 driver code

Seek help about MC33771 driver code

佳强田 — Tue, 03 Feb 2026 21:50:11 GMT

Dear all,

I am a Chinese student，I'm designing a battery management system (BMS) based on MC33771 . There are many registers in MC33771, so it confused with me, I don't know how to do it , I sincerely hope you can help me , can you share the MC33771 driver code with me? My mail:1078822846@qq.com. Thank you !

Best wishes！

Jiaqiang Tian

Re: Seek help about MC33771 driver code

TomasVaverka — Mon, 21 Aug 2017 07:59:17 GMT

Hi Jiaqiang,

I would recommend looking at our example code for the KIT3377x (FRDM-KL25Z board). It should be a good starting point for your own developments. Attached you can find a complete MC3377x Evaluation Package, the project is located by default in C:\Program Files (x86)\NXP\MC3377x_EvalPackage\EvalSW folder.

Hope it helps.

Best regards,

Tomas

Re: Seek help about MC33771 driver code

佳强田 — Mon, 21 Aug 2017 08:25:55 GMT

Dear Tomas，

I am very pleased to have received your mail, Thank you for giving me help，it's great for me. Thank you!

Best wishes for you!

jiaqiang Tian

Re: Seek help about MC33771 driver code

huangziyi — Mon, 29 Jan 2018 02:31:45 GMT

hello, i am using MC33664 combined with MC33771 to design a battery management system too , my MCU comunicate with MC33664 which is a high votalge isolation chip in spi mode,but MC33664 communicate with MC33771 in TPL mode,I looked into the driver code and wonder which interface type i should choose, could you help me with this problem ?thank you very much!

Re: Seek help about MC33771 driver code

TomasVaverka — Mon, 29 Jan 2018 11:00:51 GMT

Hi Huang,

In such a case, you should select the TPL mode (IntTPL).

Best regards,

Tomas

Re: Seek help about MC33771 driver code

huangziyi — Tue, 30 Jan 2018 11:32:30 GMT

Dear Tomas,

Thank you very much, you had helped me solve this problem perfectly. And I run into another problem again, in my code , Compare odd cell terminal pre-switch closure results to post switch closure results to determine fault mode according to datasheet <5.9 Table12: CT Open Detect and Functional Verification>.

as follow:

In my understanding , "Open line condition during test execution " means the same with"SWx failed open" .

But ,if so, then why when SWx command close , under Open line condition :V=0, but under SWx failed open condition:

Cell voltage much higher? I am confused by the question, could you please help me with it? Much appreciated!

Best wishes

huang ziyi.