Skills gained ...

Implemented non-blocking C code using HAL_GetTick() instead of blocking delays to meet real-time timing requirements.

Configured GPIO pins at register level for I2C operation, including mode selection, output type, pull-ups, and for read and writing data to registers.

Developed a deep understanding of the I2C protocol, including synchronous data transfer over SDA/SCL and multi-device bus operation.

Connected and managed multiple sensors on a shared I2C bus, following datasheet-specified pin mappings (I2C1).

Read and interpreted hardware datasheets to correctly configure peripheral and sensor registers.

Configured GPIO pins for sensor digital inputs/outputs and external interrupts (EXTI) using on-chip peripherals.

Implemented real-time communication via UART (Tera Term) and WiFi using TCP (Packet Sender), with the STM32 acting as a server.

Streamed live sensor telemetry to the ThingsBoard IoT cloud platform.

Integrated multiple sensors: temperature & humidity, accelerometer, gyroscope, pressure sensor, and magnetometer.

Programmed an OLED display using an external library and created timer-driven animations with frame toggling.

Implemented event-based alerts by triggering a buzzer when magnetometer thresholds were exceeded.

Used state flags and timer checks to coordinate concurrent tasks while maintaining fully non-blocking execution.