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Wi-Fi Combo

lili_4421586
New Contributor II

Hi,

  we are developing software on CYW43907, power consumption is very critical for us. we put CYW43907 APP CPU into sleep mode when no data send,  and WLAN CPU initialized with  wiced_wifi_enable_powersave_with_throughput( 20 ). we have two serious bugs when testing software stabilities:

1. after long running, STA is disconnected from AP, and then STA keep sending probe request every 10 seconds, but without association  request, WLAN is always down;

2. WLAN is down, and when APP CPU sending DATA or CMD to WLAN CPU, no response from WLAN CPU, no packets in air, measure the current, is about 60mA, no beacon receiving current pulse, looks like WLAN CPU can't wake up from sleep.

1.this two issues only found if APP CPU sleep on, if APP MCU is not sleep, everything is ok;

2.found many times when in 2.4G band, in 5G is very rare. and the channel utility is very high(~70%) by giving interference.(iperf UDP 10M)

SDK: WICED 6.4.

platform: CYW943907AEVAL1F

main sending loop:

1. send 1 packet;

2. read rssi and channel;

3.wiced_platform_mcu_enable_powersave();

4.sleep 1 second;

5.wiced_platform_mcu_disable_powersave();

6.goto 1

we have work on these two issues for more than one month, and still no any clues.

Thank you very much.

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3 Replies
lili_4421586
New Contributor II

more information for issue 2:

  these three registers:

        m2mreg->dmaregs[ACPU_DMA_RX_CHANNEL].tx.control,

        PLATFORM_PMU->res_req_mask1,

        PLATFORM_PMU->pmustatus

before issue happened: 0x80801/0xece3f77/0x610d

after issue happened:    0x80801/0xece3f77/0x4129

pmustatus is changed, it looks like HTClkAvailable is 0, which means HT clock is not running.

Zhengbao_Zhang
Moderator
Moderator

Hello:

It seems not very clear in the setting for cpu sleep mode,  I will have a  talk internally before replying to you .

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AxLi_1746341
Honored Contributor

@Zhengbao_Zhang wrote:

Hello:

 

It seems not very clear in the setting for cpu sleep mode,  I will have a  talk internally before replying to you .


So any update?

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