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Communication Problem

Jolly
Prodigy 10 points
Other Parts Discussed in Thread: AFE4403

Hi,

The AFE4403 watch EVM has both wireless and wired communication links.When i make sure the EVM is connected to the PC with USB,the computer doesn't have any response.I have no idear what to do next.

Thanks,

Jolly

  • 0
    TI__Mastermind 49206 points
    Hello Jolly,

    Could you please provide a more detailed description of the issue?
    Do you see the EVM listed as a COM port device under Device Manager?
    Have you installed the USB driver on the PC?
  • 0 in reply to Praveen Aroul
    Prodigy 10 points
    Hi,

    Praveen, I have similar problem so continue a related question in this thread.

    I have all the drivers installed and the PC asigns a COM port to Matlab. My goal is to connect the 4403 EVM to the PC via USB cable (later via Bluetooth) and integrate it with my own PPG algorithms.

    Based on the AFE4403 Communication Protocol v3.0 I open the serial COM port in MATLAB and send to the AFE the example command “0x02 0x31 0x32 0x34 0x35 0x36 0x37 0x38 0x39 0x0D”, I wait a couple of seconds and then I try to read the same register to see if I can control the AFE.

    I can open the serial port and apparently put data over the port. Nonetheless I receive a timeout error (10 sec) whenever I read from the serial port.

    Do you have any indication of what is going on?

    PS. I can read data by using the GUI.

    Thank you very much in advance.
    Enrique.
  • 0 in reply to Enrique GNun
    TI__Mastermind 49206 points

    Hello Enrique,

    Here is an example for write register command and read register command. The values are in hex. Also the space between the bytes are for illustrative purposes only.

    Write register command: 02 31 32 34 35 36 37 38 39 0D

    Read register command: 03 31 32 0D