2640的Multi-Role问题

2640的Multi-Role中主从两种模式是同时存在的，还是主机从机模式相互切换

This page will provide a demo for to demonstrate a multi-role project using the Texas Instruments BLE 2.0.0 SDK. That is, the project added by the patch supplied here will be capable of functioning as a master and a slave simultaneously.

请问这是哪一个例子？我正在找一个2640同时支持Multi-Role的例子。

http://processors.wiki.ti.com/index.php/Cc2640_MultiRole_Demo