SMSMorse is an Android application which will intercept incoming SMS messages and vibrate their contents in morse code.
Version 0.1.0 is a rudimentary proof-of-concept version but does provide some simple settings to customize the notification. The single dot length, the basis for the length of all timing (dash, letter space, word space, etc.), can be adjusted from 50ms to 250ms. You can also optionally choose to include the sender’s number before or after the message contents.
http://www.cyrket.com/p/android/com.jakewharton.smsmorse/