CCS/LAUNCHXL-CC1310: How to send data through RF TX while RF RX is using shared resources

Tool/software: Code Composer Studio

In my program, i use semaphore to switch between RF TX process and RF RX process for CC1310 according to link:

Now, i receive a frame via UART in RX process and want to send this frame, which use TX process but also want RX process wait for sending complete and then wait to receive. I dont know how to do this, please show me.

Regards,

Nguyen