WL1807MOD: WoWLan wake up - buffer - details needed

Anantha Narayanan Ramachandran

Part Number: WL1807MOD

Hi,

This is query regarding wakeup based on packet filtering in WL1807.

according to document [https://www.ti.com/lit/ug/swru576/swru576.pdf?ts=1709203368244&ref_url=https%253A%252F%252Fwww.google.com%252F] section : 6.3.2 Rx Filter Configuration,

Once enabled, WoWLAN patterns are searched by the chip firmware in every incoming data packet. Once a
pattern is detected the chip wakes up the host.

1. If so, what will happen to non-matched packets?. in our testing, we found they're getting stored & sent out to the host once system wakes up.
2. is it expected? if so, what is the maximum storage size/ buffer size allowed to store?

This information is very important for designing our low power system. Kindly help out.

BR,
Anantha R

6 months ago

0 Sabeeh Khan1 6 months ago

TI__Mastermind 22900 points

Hi Anantha,

I'm a bit surprised to hear that the non-matched packets are getting stored. Can you please help me understand how you found that the packets are saved and how you can test this?

0 Anantha Narayanan Ramachandran 6 months ago in reply to Sabeeh Khan1

Prodigy 180 points

1. We made system go into suspend. [by setting wowlan packet set to some other filter - non mobile app].

2. Operating from mobile app.. change set point of thermostat.

3. received more packets. but system didnt wake up.

4. Then made system wake up using expected wake up packet.

5. We do see the previous data [from #2] received now. [set point gets changed]

BR,

Anantha R

0 Sabeeh Khan1 6 months ago in reply to Anantha Narayanan Ramachandran

TI__Mastermind 22900 points

Ok, can you please describe exactly how you set up the filter for your wakeup packet?

0 Anantha Narayanan Ramachandran 6 months ago in reply to Sabeeh Khan1

Prodigy 180 points

iw phy0 wowlan enable patterns -:ff:af:a0:-:-:-:-:-:-:-:-:88:80:85:-:-:-:-:-:-:-:-:01:-:-:-:-:-:-:af:ff:f0:aa:08:00

iw phy0 wowlan show

echo enabled > /sys/devices/platform/soc/48004000.sdmmc/mmc_host/mmc0/mmc0:0001/mmc0:0001:2/wl18xx.1.auto/power/wakeup

0 Sabeeh Khan1 6 months ago in reply to Anantha Narayanan Ramachandran

TI__Mastermind 22900 points

Hi Anantha,

Thank you for this. For now the behavior you are seeing is unexpected to me at this time. My suggestion is to experiment with the number of packets that you can send before sending the wakeup packet for your particular application. If you can help test this, I might be able to pinpoint the issue of where this may be happening in the stack.

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WL1807MOD: WoWLan wake up - buffer - details needed