P4 Changed Interrupt PortB -> PortC; Unfinished implementation of PortB for teens

Abgaben/P3/Hazinedar_3108590_ARBKVS_3.c

@@ -0,0 +1,58 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#define F_CPU 16000000UL    // 16MHz clock frequency
+#define LED_PIN PD0         // LED is connected to Pin D0
+
+volatile uint32_t systemClock = 0;
+
+void setupTimer0() {
+	// Configure Timer0 for CTC mode
+	TCCR0A |= (1 << WGM01);                 // Set Waveform Generation Mode bits for CTC
+	TCCR0B |= (1 << CS01) | (1 << CS00);    // Set prescaler to 64
+	OCR0A = 249;                            // Set Output Compare Register to 249 for ~1ms interrupt
+	TIMSK0 |= (1 << OCIE0A);                // Enable Timer0 Output Compare A Match interrupt
+}
+
+// Timer0 Output Compare A Match Interrupt Service Routine
+ISR(TIMER0_COMPA_vect) {
+	systemClock++;  // Increment the milliseconds counter
+}
+
+uint32_t getSystemClock(){
+	cli();
+	uint32_t tempSystemClock = systemClock;
+	sei();
+	return tempSystemClock;
+}
+
+void waitFor(uint32_t ms) {
+	uint32_t endTime = getSystemClock() + ms;
+	while (getSystemClock() != endTime);
+}
+
+void waitUntil(uint32_t ms) {
+	while (getSystemClock() != ms);
+}
+
+void initializeLED() {
+	DDRD |= (1 << LED_PIN);  // Set LED_PIN as an output
+}
+
+void toggleLED() {
+	PORTD ^= (1 << LED_PIN); // Toggle the LED
+}
+
+int main(void) {
+	initializeLED();    // Initialize the LED pin
+	setupTimer0();      // Setup Timer0
+	//sei();              // Enable global interrupts
+
+	waitUntil(500);     // Wait until 500 ms have passed
+	toggleLED();        // Toggle the LED to turn it on
+
+	while (1) {
+		waitFor(500);   // Wait for 500 ms
+		toggleLED();    // Toggle the LED
+	}
+}