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BQ79656EVM-021: USB communications

Ricard Joanpere
Prodigy 10 points
Part Number: BQ79656EVM-021
Other Parts Discussed in Thread: LAUNCHXL2-TMS57012

Hello,

I want to use the BQ79656EVM-021 evaluation board to obtain all the battery data in real time and use it with other applications. 

I read the user guide and i didn't find how the USB communications works, and i need it to read the data with the others applications. 

I also know that i need need to connect the LAUNCHXL2-TMS57012 evaluation board, but i did't find the information that i want. 

Does anyone know how to read the battery data from the evaluation boards via USB without using the GUI?Which commands can I use (in hexadecimal or binary) to request data?  What are the frame characteristics when i write or read? 

Thanks,

  • 0
    TI__Intellectual 1760 points

    Hi Ricard,

    The '656 uses a 1Mbps UART interface. This can be implemented in a number of different ways. I recommend looking at section "9.3.6.1 Communication" of the data sheet. This section has all of the information on the expected protocol and has a subsection "9.3.6.1.1.2 Command and Response Protocol" which gives details on the different types of commands (read/write/stack read/stack write/broadcast read/broadcast write) that are available. This includes a breakdown of the binary/hex.

    Thanks,

    Geoff