CC1310: How to enable soft flow control on cc1310 uart

Hi guys,

from description in TRM, we should support soft flow control on cc1310 uart:

19.4.4.2.2 Software Flow Control (Modem Status Interrupts)
Software flow control between two devices is accomplished by using interrupts to indicate the status of the
UART.

.....

but in the driver code UARTCC26XX.c, we can not find where to enable and config the soft flow control.

could you pls give some suggestion?

thanks,

Harbor