How to read out the Freemaster TSA table from another MCU

kigerzhang · ‎03-25-2017

I use the "Kinetis KM3x_256 MCU Three-Phase Metering Reference Design" as metering part of my 3-Ph power protect module. That embedded the Freemaster by using the SCI driver. That can easily be calibrated and turned by the Freemaster PC program .

But In my system the parameters need to be read out by another MCU (Keaz64) . In order to simplify the interface the Keaz64 will use the same ISO UART to read the parameters .

I read through the KM3x_256 code ,but not found the clear scheme to read the TSA tabe .

Could anyone provide an example to demo the communication of the Freemaster PC with the board ?

Or any document to indicate the communication protocol ?

kigerzhang · ‎03-27-2017

Dear Alice,

Thanks for your reply.

My design is based on DRM162. What I want to do is reading out the meter parameters just like the Freemaster (Runing on PC) is doing .

So I can totally re-use the DRM162 software . I can use the Freemaster to calibrate the meter , and also I can use the same isolated UART to read out the current and voltage sample data by Keaz64.

I need the protocol that defines how the Freemaster communicate with the board.

Alice_Yang · ‎03-27-2017

Hi Kiger,

Sorry there isn't the describe about Freemaster protocol, only have the User Guide

under Freemaster install directory .

BR

Alice

kigerzhang · ‎03-28-2017

Dear Alice ,

Thank you !

You throw a light on me . I found the new protocol version in the Freemaster install folder .

kigerzhang · ‎03-28-2017

Dear Alice,Alice_Yang‌

Now I find the AN2471 , that is exactly what I need . But the version is old which was published in 2003 and missing the TSA .

http://cache.nxp.com/assets/documents/data/en/application-notes/AN2471.pdf?fromsite=zh-Hans&fsrch=1&...

Do you find an updated version?

Alice_Yang · ‎03-27-2017

Hello Kiger,

- Does this can help you :

http://cache.nxp.com/assets/documents/data/en/application-notes/AN4265.pdf?fsrch=1&sr=2&pageNum=1

- If didn't , please tell me which project .

BR

Alice