A perl-based SNMP agent of networked embedded devices for smart-living applications

The single chip microcontroller units (MCU) are widely applied in various embedded systems combined with different function type of sensors, robots, hybrid vehicle, or communication interfaces to control circuits. Usually single chip MCU system is triggered via the input voltage to affect the internal program logic, and then, the output state is changed. Simple Network Management Protocol (SNMP) is a standard protocol for managing devices on IP networks. It provides excellent features, such as scalability, information management, authentication, encryption, and access control. To provide a scalable control manner, this paper presents a SNMP Agent for single chip MCU systems. The user can control MCU devices via the proposed agent with the SNMP commands, effectively. We integrate the Net-SNMP libraries and the MCU functions, without Management Information Base (MIB) module, to have a small-size design for networked embedded devices. This technique will help designer to build a small-size design of SNMP agent for the MCU-based networked applications. Such technique extends applicability compared with modern networked embedded devices and improves the management convenience as the number of the same module rises.