In recent years, the transition to more sustainable mobility has become a topic of public debate. In this context, the significant diffusion of electric vehicles (EVs) has gone hand in hand with the continuous development and research of charging infrastructure. Among the various charging devices, AC wallboxes represent one of the most popular infrastructures due to their versatility and maintenance of high efficiency of charging in both domestic and commercial settings. The thesis work is part of an internal development project of the Research and Development department of the electronics division of Bitron Group S.p.A and the goal is to develop the firmware of an AC wallbox.