LWIP, FreeRTOS

[a8Chcx]

Hi,

I am using MCUXpresso V11.5 with SDK2.11.0 for FRDM-K66F...

I tried https client and works fine. When I do more testing, I found my application struck @lwip_recv_from function if my network disconnected. I checked LWIP function, I am using blocking call from LWIP.

1. Can anyone tell me how to use no-blocking lwip_recv in stead of blocking call?

2. I am using "connect()" and it will take about 20s to see failed if there is no network cable connected. Can I change the timeout for 2s because the real connection is less than 1s?

Thanks,

Christie

[danielchen]

Hi @a8Chcx 

It is possible to use non-blocking lwip_recv.

You need to enable LWIP_SO_RCVTIMEO in lwipopts.h

Please refer to below link for more details.

https://lwip.fandom.com/wiki/Netconn_receive_timeout

Regards

Daniel

[a8Chcx]

Hi Daniel,

Thanks.

It works fine.

Can you tell me how to change the delay for connect()? For now, it will take around 30s to get failed, that is too long...

Thanks,

Christie