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Wi-Fi Bluetooth for Linux

Anonymous
Not applicable

Hi All,

I am working on CYW43340 module with Atmel as the host processor. We observed that the WiFi module is awake for 200ms after every packet before going to deep sleep. Observed the same from Omnipeek packet captures.

This is causing a battery drain for our wearable device and we would like to know if we have any wl command or setting in the driver to reduce this monitor interval.

Our driver and firmware version currently:

1.141 RC77.0

wl0: Jan 30 2015 19:22:32 version 6.20.190.3 (r530911) FWID 01-5b07cccc

Any help would be helpful.

Thanks,

Rupesh.

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1 Solution
Anonymous
Not applicable

Hello Rupesh,

You can try the following commands.

wl mpc 0 (default:1)

  0=Disable minimum power control mode (required prior to WLAN RF/MFG

testing)

  1=Enable minimum power control mode (this is the default mode for

non-MFG F/W and most MFG F/W)

wl PM

  returns : The power management mode, 0=CAM(Constantly awake),

1=PS(power-save), 2=FAST PS mode

  In the BRCM WLAN driver, FAST PS mode consumes slightly more power

than the standard PS mode, but can operate at higher rates(close to

54g^r rates).

  The difference btw FAST&PS is dependent on the usage model

  1) If there is no traffic, there is no difference.

  2) If the traffic is a ready stream(some packets every DTIM),

there is no difference

  3) IF the traffic is a stream that happens less often than

every DTIM, then the adapter consumes more power in FAST PS mode and

less power but more latency in PS mode. the amount of power difference

depends on the frequency of traffic.

BR,

Aman

View solution in original post

1 Reply
Anonymous
Not applicable

Hello Rupesh,

You can try the following commands.

wl mpc 0 (default:1)

  0=Disable minimum power control mode (required prior to WLAN RF/MFG

testing)

  1=Enable minimum power control mode (this is the default mode for

non-MFG F/W and most MFG F/W)

wl PM

  returns : The power management mode, 0=CAM(Constantly awake),

1=PS(power-save), 2=FAST PS mode

  In the BRCM WLAN driver, FAST PS mode consumes slightly more power

than the standard PS mode, but can operate at higher rates(close to

54g^r rates).

  The difference btw FAST&PS is dependent on the usage model

  1) If there is no traffic, there is no difference.

  2) If the traffic is a ready stream(some packets every DTIM),

there is no difference

  3) IF the traffic is a stream that happens less often than

every DTIM, then the adapter consumes more power in FAST PS mode and

less power but more latency in PS mode. the amount of power difference

depends on the frequency of traffic.

BR,

Aman

View solution in original post