This application note describes the demonstration firmware running on the STM3210C-EVAL for the STM32F107VC to manage a smartplug network system. An embedded graphical user interface (GUI) based on the “multi-input embedded GUI library 2.0 for STM32F10xxx” described in the AN3128 application note, and working on an LCD TFT 320 x 240 display and 5-position joystick, allows the user to interact with the smartplug system made up of one coordinator and two smartplugs connected.