HW update

HW7_Mutex/led.h

+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <wiringPi.h>
+#include <pthread.h>
+
+#define RED 1
+#define GREEN 4
+#define YELLOW 5
+
+void led_green_task(void *args);
+void led_yellow_task(void *args);
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HW7_Mutex/led_green.c

+#include "led.h"
+
+void led_green_task(void* args) {
+	pinMode(GREEN, OUTPUT);
+
+	for (int i = 0; i < (int)args; i++) {
+		digitalWrite(GREEN, HIGH);
+		printf("GREEN TURN ON\n");
+		sleep(2);
+		digitalWrite(GREEN, LOW);
+		printf("GREEN TURN OFF\n");
+		sleep(2);
+	}
+}
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HW7_Mutex/led_main.c

+#include "led.h"
+
+void led_red_task(void) {
+	pinMode(RED, OUTPUT);
+
+	for (int i = 0; i < 10; i++) {
+		digitalWrite(RED, HIGH);
+		printf("RED TURN ON\n");
+		sleep(1);
+		digitalWrite(RED, LOW);
+		printf("RED TURN OFF\n");
+		sleep(1);
+	}
+}
+
+int main(int argc, char* argv[]) {
+	int gno;
+	int time;
+
+
+	wiringPiSetup();
+
+	if (argc < 2) {
+		printf("Insert Correct value, try again\n");
+		exit(-1);
+	}
+	gno = atoi(argv[1]);
+	time = atoi(argv[2]);
+
+
+	pthread_t G;
+	pthread_t Y;
+
+	if (gno == 1) {
+		if ((pthread_create(&G, NULL, led_green_task, (void*)time)) < 0) {
+			perror("thread create error:");
+			exit(0);
+		}
+	}
+	else if (gno == 2) {
+		if ((pthread_create(&Y, NULL, led_yellow_task, (void*)time)) < 0){
+			perror("thread create error:");
+			exit(0);
+		}
+    }
+	else if (gno == 3) {
+		if ((pthread_create(&G, NULL, led_green_task, (void*)time)) < 0) {
+			perror("thread create error:");
+			exit(0);
+		}
+        if ((pthread_create(&Y, NULL, led_yellow_task, (void*)time)) < 0){
+			perror("thread create error:");
+			exit(0);
+		}
+    }
+	led_red_task();
+
+
+	
+	pthread_exit(NULL);
+	return 0;
+}
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HW7_Mutex/led_yellow.c

+#include "led.h"
+
+void led_yellow_task(void* args) {
+	pinMode(YELLOW, OUTPUT);
+
+	for (int i = 0; i < (int)args; i++) {
+		digitalWrite(YELLOW, HIGH);
+		printf("YELLOW TURN ON\n");
+		sleep(3);
+		digitalWrite(YELLOW, LOW);
+		printf("YELLOW TURN OFF\n");
+		sleep(3);
+	}
+}
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