single channel driver OK on Discovery

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1789 01035d8c-6547-0410-b346-abe4f91aad63
single channel driver OK on Discovery

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1790 01035d8c-6547-0410-b346-abe4f91aad63
single channel driver OK on Discovery

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1791 01035d8c-6547-0410-b346-abe4f91aad63