How to receive broadcast c6678 without NDK

Hi all.

I based my application on pdk emac_single example. It work perfectly with unicoast.

But i can't receive any brodcast msg.

I tried use :

brdcMac[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};

Switch_update_addr(2, brdcMac, 0);

but it doesn't work.

Pls help!