How to place WL1273 WiFi into Extreme Low Power (ELP) mode ?

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Posted by Mahesh Hooli

on Jun 25 2012 12:01 PM

Hello All,

We are using WL1273L module in one of our designs and we are trying to force WiFi onto ELP (Extreme Low Power) or power down mode.

Could you please provide me details about the commands to be used for the same?

Thanks and regards,

Mahesh Hooli

All Replies

Posted by Eyal a

on Jun 26 2012 01:01 AM

Genius9240 points

Hi,

The WL1271L will get to ELP mode when the firmware (run on WL1271 ARM) has nothing to do for example in case there is no received frames, no frames to transmit, no scan to perform , no need to handle command from the Host driver and so on. In addition in case the WL1271 works in Station mode and not connected to any AP it will also get into ELP mode. So there is no need to specific command to enter ELP mode.

Can you please elaborate why you need that? had you seen some issue?

Regards,

Eyal

Posted by Mahesh Hooli

on Jun 26 2012 08:50 AM

Intellectual320 points

Hi Eyal,

Thanks for the reply.

Whether WL1273L will behave similar to WL1271?

We are running WinCE OS one over platform and we would like place the WL1273L module onto ELP mode/Power down mode.And when I measure the current it is around 90mA. Once in 2 minutes it goes down to 3mA for few seconds and it comes back again to 90mA.

The awailable WiFI networks are always getting displayed on the Windows screen, so I belive WL1273L module is placed in continuous scanning mode.

Regards,

Mahesh Hooli

Posted by Eyal a

on Jul 01 2012 16:46 PM

Genius9240 points

Hi,

1271 is WiFi chip that support 2.4Ghz band and 1273 is WiFi chip that support 2.4Ghz band and 5Ghz band. The L suffix in the 1273 indicate that it can also support BLE.

As far as ELP concern both 1271 and 1273L behaves exactly the same.

90mA is the current consumption of Receive, so it is reasonable that the chip is always in Receive state that listen to Scan (beacons and probe responses), what happen if you close the Windows of the WiFi, also make sure that you are disconnected from any AP?

Regards,

Eyal