IoT Microchip AVR Microcontroller's Fuses and Lock Bits High Voltage Programmer

This paper proposes a reliable wireless configuration bits programmer for remotely resetting incorrectly-written Microchip AVR microcontrollers' Fuses and Lock Bits. The incorrect configuration bits programming leads critically to a micro-controller malfunction which requires correct reprogramming. The proposed programmer utilizes Wi-Fi for enabling the remote configuration bits programming via a PC or a smart mobile device. It employs the Microchip AVR High Voltage Parallel and Serial Programming protocols which uniquely support the configuration bits programming feature. The configuration bits define a microcontroller's hardware and operation settings, such as the bootloader feature and clock source selection. Simulations and experimental work are conducted on remotely reprogramming the Microchip AVR ATtiny85 and ATmega16A microcontrollers' configuration bits using HVPP and HVSP protocols. © 2022 IEEE.