Microcontroller peripheral labs

Coursework · C, GPIO, interrupts, timers, PWM, SPI

I wrote C firmware for button inputs, LED outputs, and a PWM buzzer. The final program uses an external interrupt for button handling, Timer2 with output compare for PWM, and a separate Timer3 interrupt for timed LED updates.

Repository Final program SPI lab

Implementation

Button interrupt: the handler toggles an LED output and enables or disables the output-compare peripheral used for the buzzer.
PWM: Timer2 supplies the time base for OC1, with peripheral configuration written directly in C.
Timed output: a Timer3 interrupt handler toggles a separate LED.
SPI lab: a separate program configures SPI1 in master mode. Its button interrupt handler writes successive byte patterns to the SPI buffer and wraps the sequence index.

Source files

File	Contents
finalcode.c	GPIO configuration, button and timer interrupt handlers, and PWM output.
lab9.c	SPI master configuration and interrupt-driven byte transfers.