Projects

Firmware for IoT Board PG Board

2022

To enable communication with an IoT platform, I developed a test REST endpoint. Subsequently, I developed firmware for the PG Board with an STM32L4 microcontroller, which ensures low power consumption and reliable communication with the back-end over the NB-IoT network and the Internet:

processing inputs from temperature and humidity sensors via I2C,
serial communication via UART with DMA,
support for MRAM memory,
state machine for communication over the NB-IoT network,
debug command line,
board idle current consumption of 300 µA.

I also designed an expansion board for measuring current consumption when powered from a battery.