Switch to unsigned-char buffer. Closes #1.
Switch to unsigned-char buffer. Closes #1.

goertzenator/erlang-serial,jhicks-camgian/erlang_serial,mobileoverlord/erlang-serial,knewter/erlang-serial,emfa/erlang_serial,tonyg/erlang-serial,AVert/erlang-serial,RosePointNav/erlang-serial