Zhengtian,
There is one McBSP/EDMA example on page 2 of the following thread, using McBSP CSL ported from other device to C6657:
http://e2e.ti.com/cfs-file.ashx/__key/communityserver-discussions-components-files/639/1106.McBSP_5F00_EDMA_5F00_example.zip
But it is recommended to use McBSP LLD in the MCSDK package. The McBSP example project is built based on SYS/BIOS but the McBSP LLD itself should be able to use separately from BIOS. You can include the LLD library and use APIs in LLD to configure McBSP in your own C/C++ project.