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Original question:

Compiler/AWR1243: A question about the function of MMWL_powerOnMaster

Compiler/AWR1243: A question about mmwavelink

huangyaohui
Intellectual 520 points
Part Number: AWR1243

Tool/software: TI C/C++ Compiler

Hello,team

I have a question when I read mmwave DFP Non-OS example. Why PC can communicate with AWR1243 over SPI when I setting the master without slave? I think communicating over SPI need to set master and slave, but I couldn't find where the code about setting awr1243 is.

  • 0
    TI__Guru 69990 points

    Hi,

    Setting of Master/slave needs to be set in rlSetChannelConfig API.

    Please look for the detail of this API and structure in rl_sensor.c/.h

    Regards,

    Jitendra

  • 0 in reply to Jitendra Gupta
    Intellectual 520 points

    Thanks for your answer, but it's not answer I want.  In the example for SPI, we need to Initialize the master and slave. In this application, PC is the master and AWR1243 is the slaver.

    The first question, in my opinion, the mmwavelink is code that initialize the master's SPI interface. But where is the code that initialize the slave's SPI interface? Is the firmware include MSS and BSS?

    The second question, once powered up the awr1243, we can transfer message from host to device over SPI. Is right?  In other words, Whether or not awr1243 have a ability to receive the message over SPI because the code has been flashed?

  • 0 in reply to huangyaohui
    TI__Guru*** 149204 points

    Hi,

    Yes, the AWR1243 SPI is initialized in the firmware. And the AWR1243 can receive SPI message after boot up

    thank you

    Cesar