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[AFE44x0EVM] Stop Read ADC Register Command

Webb Yang
Intellectual 260 points


Hi,

I was testing commands following "Message Communication Protocol v4.0" by using AccessPort.

It seemed OK for most commands except when it goes to continuous data.

From the document: [PC sends: “0x01 0x2A 0x00 0x00 0x00 0x00 0x0D”]

First of all, the packets of 4 "0x00" seemed to be 0x30 for ASCII so that we can see the output data continuously.

Next, when it continuously output data, I found it no use for sending Stop Read ADC Register Command: 0x06 0x0D.

It still output data and never stop.

The firmware version is v1.4.

Any ideas? Thank you.

Best regards,

Webb

  • 0
    TI__Genius 12575 points
    Hi Webb,

    There is a mistake in "Message Communication Protocol v4.0". For continuous data capture mode, PC sends 0 as No of Packets as shown below.
    PC to EVM : "0x01 0x2A 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x0D"

    In continuous capture mode EVM sends data until user hits "Stop" button. When "Stop" button is pressed GUI issues a Stop Read ADC Register Command (i.e. 0x06 0x0D) and EVM stops sending data to PC.

    Thank you pointing the mistake, hope this helps.

    Regards,
    Prabin
  • 0 in reply to Prabin Yadav
    Intellectual 260 points
    Hi Prabin,

    Thank you for reply.

    Actually my problem is as follows:
    If the Stop Read ADC Register Command is sent by AccessPort other than the AFE44x0EVM GUI, I found it unable to stop transmitting data.

    Is there anything need to be done before sending the stop command? (Such as some initial register setting.)
    Thank you.

    Best regards,
    Webb
  • 0 in reply to Webb Yang
    Intellectual 260 points
    Hi Prabin,

    I've checked with other programming interface to send stop command.
    It works fine.
    Maybe the problem is because AccessPort cannot send data while keep reading.
    Thank you.

    Best regards,
    Webb