IWRL6432BOOST: Problem in making MCU out from LPDS with GPIO input

CHANGGEUN Park

Prodigy 50 points

Part Number: IWRL6432BOOST
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi,

I'm using IWRL6432BOOT(ASSY REV A1, Silicon REV ES2.0) and MMWAVE_L_SDK_05_05_03_00.

I'm testing on waking up MCU from LPDS by using GPIO input.

The first try I did was running example code in MMWAVE_L_SDK_05_05_03_00\examples\drivers\power\power_modes\xwrL64xx-evm\m4fss0-0_freertos\ti-arm-clang.

There was no probelm in building binary image with SDK and flashing that binary image on my EVM, without any change in SDK.

After the board is reset, I got messages below on my serial terminal.

*** Power Management Options : ***
1) for LPDS.
2) for Idle Mode.
Please select Power Management mode :

After I entered "1" to make my board LPDS mode, I got message below.

Entering LPDS....

With this message output, I pressed S3 button and I noticed the D7 LED (USER_LED) was blinking.

(SW1.6 was OFF position)

The behaviour I expected was that board waked up immediately with my button press.

But the actual result was not.

My board waked up after a few tens of seconds from the time I entered "1" and the board waked up with the message below.

Idle State is taken as the LPDS Threshold is 30000 ms but avaialble idle time is 50000 ms!!

Is there any thing I mssed?

How can I make my board wake up immediately with GPIO input?

Thanks

2 months ago

0 Sharan S S 2 months ago

TI__Expert 4150 points

Hi,

There should be some notable latency added in the syscfg of power instance to depict the example. Can you try changing that threshold?

Please have a look at this directory: {SDK}/docs/api_guide_xwrL64xx/DRIVERS_POWER_PAGE.html

Regards,

Sharan

0 CHANGGEUN Park 2 months ago in reply to Sharan S S

Prodigy 50 points

Hi Sharan,

I can not understand what I should change.

So, would you see the sysconfig screen shot I captured and let me know what I should change?

Thanks

0 Sharan S S 2 months ago in reply to CHANGGEUN Park

TI__Expert 4150 points

Hi,

Can you disable all wakeup sources except GPIO and rebuild the project to get an appimage?
Also, in the syscfg file if you scroll down in the power instance, you'll see a PAD PIN configuration for GPIO. Please note this pin and ensure that it's in DONT PARK state in the tab below named PARK PINS

Once flashed, you can open tera term and enter 1 for LPDS mode. If you press USER SW 3, you should be able to see the output now.

Regards