R-Bus - a resource bus for modular system design.

This paper presents R-Bus, a resource bus for modular system design, that overcomes the limitations of existing approaches with flexible device integration targeted for IoT system design. R-Bus provides a standard pluggable connection based on existing PCI-e x1 socket and connector, that allows up to 36 pins on a single bus enough to accommodate a variety of widely used embedded peripherals. R-Bus also addresses advance system configuration and plug-and-play functionalities to ease modular system design. We show that R-Bus enhances system integration by providing a sufficient resource interface with suitable pin-mapping to cope with diverse application requirements.