CCS/AWR1843: How to read AWR1843 TX power?

Part Number: AWR1843

Tool/software: Code Composer Studio

Hi,

I have some questions that I want to always monitor AWR1843 TX power.

Then I read  the document("AWR1xxx Radar Interface Control Document") and

I find out "AWR_MONITOR_TX0_POWER_REPORT_AE_SB"&"AWR_MONITOR_TX1_POWER_REPORT_AE_SB" &"AWR_MONITOR_TX2_POWER_REPORT_AE_SB" API describes as below:

This API is a Monitoring Report API which the AWR device sends to the host, containing the measured "TX power values" during an explicit monitoring chirp. The AWR device sends this to host at the programmed periodicity or when failure occurs, as programmed by the configuration API SB.

But I could not know how to send message to BIST SS by Mailbox interface.

Is there a function control mailbox that can send message to BIST SS? And is there a function control mailbox that can receive message from BIST SS?

I hope to implement the function to communicate between Master SS and BIST SS.

Thank you.