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Wi-Fi Combo

Anonymous
Not applicable

Hi,

I'm making WWD port to Murata SN8000 with custom board based on STM32F7 (1B SDIO + IRQ).

I can succesfully run scan example (FreeRTOS_LwIP_Scan.c), but after a few loops I get WWD_TIMEOUT from wwd_wifi_scan function which is caused by timeout on function wwd_bus_packet_available_to_read(void). WWD_Timeout is returned by backplane write function on SDIO_INT_STATUS register.

Do you have any suggestions?

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1 Solution
DaBa_2244756
Contributor

Yes, it possible. Because LWIP at debug mode doing memory test, at this moment are disabled interrupts , so you can lost packet.

View solution in original post

7 Replies
DaBa_2244756
Contributor

Hi,

What your SDIO speed now?

Darius

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Anonymous
Not applicable

I use 2 MHz because with 4MHz I had occasionaly problem with startup sequence (due to my layout with a long lines). Do you have any idea why operation on SDIO_INT_STATUS can get a timeout?

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Anonymous
Not applicable

I turned off DEBUG option and it started to work stable, and over 30 minutes it scans networks perfectly. Probably debug mode caused loosing some packets and exit from scan thread.

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DaBa_2244756
Contributor

Yes, it possible. Because LWIP at debug mode doing memory test, at this moment are disabled interrupts , so you can lost packet.

View solution in original post

Anonymous
Not applicable

Thank you, I will also try to increase SDIO loops timeout parameter as you mention.

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AxLi_1746341
Honored Contributor

sqlsql_2244756 wrote:

Yes, it possible. Because LWIP at debug mode doing memory test, at this moment are disabled interrupts , so you can lost packet.

I'm not convinced it's related to memory test in debug mode.

You can still test with debug build but disable the MEMP_OVERFLOW_CHECK/MEMP_SANITY_CHECK.

rad_4757021
New Contributor II

Hi maanc,

Actually we too have custom board STM32F7 + BCM4343. We could see that WICED SDK doesn't support STM32F7 yet.

Could you please help us or refer related doc to use WICED SDK for STM32F7.

Thanks in advance for your help. 

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