non blocking TCP in nrf9160

[vchhabra]

Do we have any examples of using tcp in non blocking mode for the NRF9160. I used the USP for PSM example as base for my current project but the blocking call seems to lead to an issue.

[Håkon Alseth]

Hi,

 

Are you setting up the socket to be non-blocking via fcntl()?

int flags = fcntl(client_fd, F_GETFL);
fcntl(my_fd, F_SETFL, flags | O_NONBLOCK);

 

Kind regards,

Håkon

[vchhabra]

yes, setting it is not the issue. I figured it out a little while after posting the ticket. Just wondering if there is any way to get an interrupt when new data is available for reading or do we have to poll.

[Håkon Alseth]

Hi,

 

I'm glad to hear that you found a workaround.

 

vchhabra said:

Just wondering if there is any way to get an interrupt when new data is available for reading or do we have to poll.

 A thread with poll() is the way to go. This will essentially be triggered from the modem (via a interrupt) when new data is received (or timeout occurs).

 

Kind regards,

Håkon