CC3220S-LAUNCHXL: sl_Select in SL_PLATFORM_MULTI_THREADED mode

Akbar Dhanaliwala20

Hi,

I'd like to know if using sl_Select in multithreaded mode is supported/correct. I noticed that if SL_PLATFORM_MULTI_THREADED is defined then SimpleLinkSocketTriggerEventHandler is not defined. So I'm curious what is the proper usage (if any) of sl_Select in multi-threaded mode.

If sl_Select is not supported in multi-threaded mode, then is there an example for how to wait on incoming data when using a TCP socket using SimpleLink + FreeRTOS? I'd prefer to not to poll, but rather treat incoming data like bytes in a message queue, so I can have a thread wait on incoming bytes like I would using "xQueueReceive".

I'm using FreeRTOS as my OS.

Thanks!

over 7 years ago

0 Sarah P over 7 years ago

TI__Mastermind 38980 points

Hi Akbar,

Please see section 6.7 Operation Modes of the Network Processor's Guide: www.ti.com/.../swru455a.pdf

Trigger mode is designed as an extremely low-power mode, so it is intended for non-OS applications. sl_Select can be used in multi-threaded mode, but it is the application's responsibility to poll sl_Select.

Best regards,
Sarah

0 Akbar Dhanaliwala20 over 7 years ago in reply to Sarah P

Intellectual 320 points

Hi Sarah,

Does calling sl_Select (blocking mode) from a FreeRTOS thread put that thread into a Not Running state, or will it stay in the Running state and block lower priority threads from becoming active? Thanks!

best,

Akbar

0 Sarah P over 7 years ago in reply to Akbar Dhanaliwala20

TI__Mastermind 38980 points

Hi Akbar,

Blocking mode means that the function will not return until it has completed (or timed out). So yes, it means that thread cannot continue until the function returns. Other threads can run as usual.

Best regards,
Sarah

Wi-Fi

Wi-Fi forum

CC3220S-LAUNCHXL: sl_Select in SL_PLATFORM_MULTI_THREADED mode