The International Conference on Hardware/Software Codesign and System Synthesis is the premier event in the design, modeling, analysis, and implementation of modern embedded systems, from system-level specification and optimization to hardware/software implementation. The conference is a forum for active discussions on various topics of current and future importance to designers and researchers. The program of the conference brings together the latest and the best in academic and industrial research and development. High-quality original papers will be accepted for oral presentation followed by interactive poster sessions. CODES+ISSS 2015 is part of the Embedded Systems Week 2015.