Changed directory structure to eventually support multi-MCU family support

SHAL/Src/main.cpp

@@ -0,0 +1,51 @@
+#include "SHAL.h"
+#include "stm32f0xx.h"
+
+extern "C" void EXTI0_1_IRQHandler(void) {
+    if (EXTI->PR & (1 << 0)) {   //Check pending flag
+        EXTI->PR |= (1 << 0);    //Clear it by writing 1
+        GPIOA->ODR ^= (1 << 5);
+    }
+}
+
+void tim2Handler(){
+    GPIOA->ODR ^= (1 << 4);
+}
+
+int main() {
+    RCC->AHBENR |= RCC_AHBENR_GPIOAEN;
+    RCC->AHBENR |= RCC_AHBENR_GPIOBEN;
+
+    Timer timer2 = getTimer(Timer_Key::S_TIM2);
+
+    timer2.setPrescaler(8000 - 1);
+    timer2.setARR(2000 - 1);
+    timer2.setCallbackFunc(tim2Handler);
+    timer2.start();
+
+
+    RCC->APB2ENR |= RCC_APB2ENR_SYSCFGEN; //Enable SYSCFG clock (needed for EXTI)
+
+    GPIOA->MODER &= ~(0b11 << (4 * 2));
+    GPIOA->MODER |= (0b1 << (4 * 2));
+
+    GPIOA->MODER &= ~(0x3 << (5 * 2));
+    GPIOA->MODER |=  (0x1 << (5 * 2));
+
+    GPIOB->MODER &= ~(0x3 << (0 * 2));
+    GPIOB->MODER |=  (0x0 << (0 * 2));
+
+    SYSCFG->EXTICR[0] &= ~SYSCFG_EXTICR1_EXTI0; // Clear EXTI0 mapping
+    SYSCFG->EXTICR[0] |= SYSCFG_EXTICR1_EXTI0_PB; // Map PA0 -> EXTI0
+
+    EXTI->IMR |= (1 << 0);   // Unmask EXTI0
+    EXTI->RTSR |= (1 << 0);  // Trigger on rising edge
+
+    NVIC_EnableIRQ(EXTI0_1_IRQn); // EXTI lines 0 and 1 share an IRQ vector
+
+    __enable_irq();
+
+    while (true) {
+    	__WFI();
+    }
+}