Bluetooth/BLE wakeup from sleep

[FlyBoyBart]

I'm working on a project that requires the board (an iMX8MM - with an AX200 Intel Wireless Wi-Fi/BT card) to be able to sleep for a very long time while powered on battery.  With very long, I mean weeks to months.  The OS I'm using is Linux, our own build/maintained distribution, using Buildroot.

I managed to wakeup the board via Wi-Fi, using the WAKE hardware signal available on the AX200.  In sleep mode the AX200 still consumes about 600 milli-watt which gives me a max sleep period of 3 days - not enough :(.

But what about Bluetooth wakeup?  I read that Bluetooth wakeup is very power consuming, but I know IoT devices, using BLE, power up for a second to see if someone is waking up the device.  If no wake-signal has been detected, the device goes into sleep again for a few seconds.  During this deep sleep, the BLE device consumes very little (a few milliwatt) as its CPU is put into deep sleep and the RX hardware powered OFF.  Is this behaviour possible on the AX200 as well?

If yes, how to configure this?

Regards,

BartT

[DeividA_Intel]

Hello FlyBoyBart,

Thank you for posting on the Intel® communities.   

In order to better assist you, please provide the following:  

1. The brand and model number of your system. You can also provide the Intel® System Support Utility for the Linux* Operating System for more details: https://www.intel.com/content/www/us/en/download/18895/26735/intel-system-support-utility-for-the-linux-operating-system.html

2. If the tool does not work, provide the motherboard band and model names as well as the BIOS version, the wireless adapter driver version.

3. Can you share more details about your project?

4. Can you share any like from the place you read about the Bluetooth Wake-up feature?

5. Are you having issues with the Wake-up feature? Or do you want to change the power consumption features for the device?

Regards,  

Deivid A. 

Intel Customer Support Technician 

[FlyBoyBart]

Hi Deivid,

let me answer your questions:

1. We are using a custom board with a custom distribution.  The Intel Support Utility is not included. The board we are using is a Compulab UCM-IMX8M Evaluation board.  The CPU is an iMX8M-Mini.  The Wireless card is the AX200 module.  Details are in the attached picture.
2. As mentioned in 1, it no standard motherboard, it is the Compulab UCM-IMX8M Evaluation board.  The OS Linux, kernel version 5.4.24, the Wireless driver in the iwlwifi backport, version core62.
3. Sorry, other then the info already provided, I cannot share.
4. https://community.intel.com/t5/Intel-NUCs/Wake-on-Bluetooth-after-sleep/td-p/581792
5. The main goal is to reduce power consumption of the board, specially in suspend to ram mode, with a wireless wakeup capability enabled.

[DeividA_Intel]

Hello FlyBoyBart, 

Thank you for the information provided 

I will proceed to check the issue internally and post back soon with more details. 

Best regards, 

Deivid A.  

Intel Customer Support Technician 

[DeividA_Intel]

Hello FlyBoyBart,  

I would like to let you know that we have a specific forum for this kind of issue, it is called the Intel Developer Zone. There you will receive the appropriate support on this and other concerns you may have related to this product.  

Here you will find the links to access the website and the community forums:  

- https://software.intel.com/content/www/us/en/develop/home.html  

- https://community.intel.com/t5/Software/ct-p/software-products  

Please keep in mind that this thread will no longer be monitored by Intel.  

Regards,   

Deivid A.  

Intel Customer Support Technician