Hi, Many WiFi chips with the firmware running inside can be configured to enter the vendor specific power save mode. Basically, the chip will use 802.11 Power Save mode - wake up to listen the beacon, then sleep again. When the chip receives the broadcast/unicast packet, it will notify the host via interrupt.
To save more power, we can let the SDIO controller enter 1-bit mode to stop the clock. When we design the SoC(primary CPU), we divide it into several power/ clock domains for power management purpose. At least one unique part(power management unit) will not be turned off. It controls the power of the rest of SoC. When the specific event(timer timeout or interrupt) occurs, it can wake up the SoC. Since the SDIO controller is inside Qualcomm SoC, it may be possible to keep the SDIO controller alive, then turn off or stop the processor (ARM core) and other components of SoC. Leon On Jan 29, 1:11 am, "Justin (Google Employee)" <[email protected]> wrote: > This is not possible. In sleep mode the G1's primary CPU is turned > off. Maintaining the WiFi connection requires use of the primary CPU. > Therefore sleep mode and WiFi are incompatible. > > Cheers, > Justin > Android Team @ Google > > On Jan 28, 6:41 am, Thomas Iverson <[email protected]> wrote: > > > hi all , i found g1 will automatically turn off the wifi connection in sleep > > mode , maybe it's for battery saving or something what , but , i want to > > keep wifi connection alive > > i googled a lot and still don't get any useful solution , any help ? thanks > > a lot ! > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
