LiamsMain.c

#include <stm32f0xx.h>
#include <stdint.h>
#include "../lib/generated_files/STM32F030R8_Init.h"

#define BIT_SET(PORT, BIT)          (((PORT) -> BSRR) |= (1 << (BIT)))
#define BIT_RESET(PORT, BIT)        (((PORT) -> BSRR) |= (1 << ((BIT) + 16)))


// Create a timer variable so it is easier to deal with in GDB
TIM_TypeDef * counter = TIM6;


// Returns the current value from the counter
static int16_t now()
{
	return counter->CNT;
}


// Non-blocking counter that is used as a delay
void delay(volatile int16_t ticks)
{
    // Sets the time that the timer will stop at
    volatile int16_t deadline = ticks + now();

    // Loop until the timer reaches the deadline
    while ((int16_t)(deadline - now()) > 0);
        ;
    return;
}


int main(void)
{
    // Initialize pins
    Init_STM32F030R8_GPIO();                // I have tested this line before, I know this works properly

    // Initialize timer 6
    RCC->APB1ENR |= RCC_APB1ENR_TIM6EN;     // Turn on timers clock
    TIM6->PSC = 8000-1;                     // Set the prescaler to 8,000, making each tick 1 ms (if the clock is 8 MHz)
    TIM6->ARR = 0xFFFF;                     // Set the max value to 0xFFFF
    TIM6->CR1 |= TIM_CR1_CEN;               // Enable the timer


    // Blink the LED 5 times
    for (int i = 0; i < 5; i++) {

        BIT_SET(GPIOC, 1);
        delay(1000);

        BIT_RESET(GPIOC, 1);
        delay(1000);
    }  


    for (;;);
}