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AWRL6432: How to wakeup from deep sleep via UART

Shige
Prodigy 60 points
Part Number: AWRL6432

Tool/software:

Hi,

Although I modified the syscfg settings of the motion_and_presence_detection software( mmwave_l_sdk_05_04_00_01)  as described below, the device could not be woken up via UART.

Are there any additional changes required to enable wakeup from deep sleep via UART? Or are there any limitations, such as UART B not being supported for this function?

UART setting is below.

Thanks.

  • 0
    TI__Mastermind 22605 points

    Hi,

    You can refer to the example in "C:\ti\MMWAVE_L_SDK_05_05_03_00\examples\drivers\power" to know how to integrate power mode and wake up.

    Regards,

    Ajay

  • 0 in reply to Ajay Narayan
    Prodigy 60 points

    Hi,

    Thank you for your reply.

    I have 2 questions.

    1. I ran the power example on the EVM. Wake up worked correctly with SYNCIN, but it didn't work with UART.

        Are there any possible factors?

    2. The following is the source code for power_modes.c in the power example.

        Power_enablePolicy();
        xSemaphoreTake(gPowerSem, SLEEP_TIME_TICKS);

    　The Power_enablePolicy function simply sets 'Power_module.enablePolicy = TRUE'. Is it correct to understand that this alone causes the device to enter the LPDS state? Also, is SLEEP_TICKS the duration of the LPDS state?

    Regards,

    Shige

  • 0 in reply to Shige
    TI__Mastermind 22605 points

    Hi Shige,

    Due to upcoming holiday in US on Monday. We will only be able to get back on Tuesday. Thanks for your understanding.

    Regards,

    Ajay

  • 0 in reply to Ajay Narayan
    TI__Genius 13156 points

    Hey Shige,

    The UART wakeup is only triggered by wakeup on UARTA. If you are using the EVM (AWRL6432BOOST), we can only configure UARTB since UARTA is either always connected to the XDS110 or CAN interface on our EVMs. If you had your own custom board, then you would be able to free up UARTA to allow it to trigger the UART wakeup.

    Please let me know if you have any other questions.

    Cheers,

    Kristien

  • 0 in reply to Kristien Everett
    Prodigy 60 points

    Hi,

    Thank you for your reply.

    I think I will prepare my own custom board to check the uart wake up. 

    Regards,

    Shige