main.c - master - AVLGU/STM32F072_Programming

main.c
149 строк3 KB
AVLGU
4 button 4 lights
14 окт 2025, 16:10
14 окт 2025, 16:10e7a1155
#include "stm32f0xx.h"

void Interrupt_counter (void);

static void init(void)
{
	// PA0 -INPUT BUTTON
	RCC->AHBENR |= RCC_AHBENR_GPIOAEN;
	GPIOA->MODER &= ~(GPIO_MODER_MODER0); // reset on leg 0
	GPIOA->PUPDR &= ~(GPIO_PUPDR_PUPDR0); // reset PUPDR on leg 0
	GPIOA->PUPDR |= ~(GPIO_PUPDR_PUPDR0_0); // PUR on leg 0
	
	//PA4, PA5 - PD INPUT
	GPIOA->MODER &= ~(GPIO_MODER_MODER4 | GPIO_MODER_MODER5); // reset on leg 4,5
	GPIOA->PUPDR &= ~(GPIO_PUPDR_PUPDR4 | GPIO_PUPDR_PUPDR5); // reset PUPDR on leg 0
	GPIOA->PUPDR |= ~(GPIO_PUPDR_PUPDR4_1 | GPIO_PUPDR_PUPDR5_1); //  PDR on leg 0

	// PA12, PA15 - OUTPUT
	GPIOC->MODER &= ~(GPIO_MODER_MODER12 | GPIO_MODER_MODER15); // reset on legs 12,15
	GPIOC->MODER |= (GPIO_MODER_MODER12_0 | GPIO_MODER_MODER15_0); // 1 on 0st bit on legs 12,15
	

	//PC6-PC9 LEDs
	RCC->AHBENR |= RCC_AHBENR_GPIOCEN;
	GPIOC->MODER &= ~(GPIO_MODER_MODER6 | GPIO_MODER_MODER7 | GPIO_MODER_MODER8 | GPIO_MODER_MODER9); // reset on legs 6,7,8,9
	GPIOC->MODER |= (GPIO_MODER_MODER6_0 | GPIO_MODER_MODER7_0 | GPIO_MODER_MODER8_0 | GPIO_MODER_MODER9_0); // 1 on 0st bit on legs 6,7
	//GPIOC->ODR |= GPIO_ODR_6; //LIGHT ON LEG 6 red -1
	//GPIOC->ODR |= GPIO_ODR_7; //LIGHT ON LEG 7 blue -3
	//GPIOC->ODR |= GPIO_ODR_8; //LIGHT ON LEG 6 orange  -4
	//GPIOC->ODR |= GPIO_ODR_9; //LIGHT ON LEG 9 green - 2
	
	/*
	RCC -> APB2ENR |= RCC_APB2ENR_TIM1EN;
	TIM1 -> CR1 = TIM_CR1_CEN;
	TIM1->PSC = 719;
	TIM1->ARR = 9999;*/

}

/*
static void TIM1_CC_IRQHandler(void)
{
	Interrupt_counter();
}
*/
static volatile uint16_t button;
static volatile uint8_t counter=0;

static void CheckButtons (void)
{
	GPIOC->ODR &= ~(GPIO_ODR_6 | GPIO_ODR_7 | GPIO_ODR_8 | GPIO_ODR_9);//light off
	
	GPIOA->ODR |= GPIO_ODR_12;
	if ((GPIOA->IDR)&GPIO_IDR_5)// 1 button
	{
		GPIOC->ODR |= GPIO_ODR_6; //LIGHT ON LEG 6 red -1
	}
	if ((GPIOA->IDR)&GPIO_IDR_4)// 2 button
	{
		GPIOC->ODR |= GPIO_ODR_9; //LIGHT ON LEG 9 green - 2
	}
	GPIOA->ODR &= ~GPIO_ODR_12;

	GPIOA->ODR |= GPIO_ODR_15;
	if ((GPIOA->IDR)&GPIO_IDR_4)// 3 button
	{
		GPIOC->ODR |= GPIO_ODR_7; //LIGHT ON LEG 7 blue -3
	}
	if ((GPIOA->IDR)&GPIO_IDR_5)// 4 button
	{
		GPIOC->ODR |= GPIO_ODR_8; //LIGHT ON LEG 6 orange  -4
	}
	GPIOA->ODR &= ~GPIO_ODR_15;
}

void Interrupt_counter (void)
{
	GPIOC->ODR &= ~(GPIO_ODR_6 | GPIO_ODR_7 | GPIO_ODR_8 | GPIO_ODR_9);
	
	button = (GPIOA->IDR)&GPIO_IDR_0;
	if (button)
	{
		if (counter>0)
		{
			counter--;
		}
		else counter = 3;
		
	}
	
	else{
		if (counter<3)
		{
			counter++;
		}
		else counter = 0;
	}
	
}

static void SpinLights (void)
{
	if (counter==1)
	{
		GPIOC->ODR |= GPIO_ODR_6; //LIGHT ON LEG 6 red -1
	}
	else if(counter==2)
	{
		GPIOC->ODR |= GPIO_ODR_9; //LIGHT ON LEG 9 green - 2
	}
	else if(counter==3)
	{
		GPIOC->ODR |= GPIO_ODR_7; //LIGHT ON LEG 7 blue -3
	}
	else if(counter==0)
	{
		GPIOC->ODR |= GPIO_ODR_8; //LIGHT ON LEG 8 orange  -4
	}
}




static void systick_init(void)
{
	SystemCoreClockUpdate();
	
	SysTick->LOAD = SystemCoreClock/8-1; //restart val
	SysTick->VAL = 0; // first start val
	SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_ENABLE_Msk;
}



int main(void)
{
	init();
	systick_init();

	
	while(1)
	{
		
		if (SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk)
		{
			CheckButtons();
		}
	}
}