led

0814/led.h

+#include <stdio.h>
+#include <stdlib.h>
+#include <wiringPi.h>
+#include <pthread.h>
+
+extern void *led_blue_task(void *);
+extern void *led_orange_task(void *);

0814/led_blue.c

+#include "led.h"
+
+void *led_blue_task(void *arg)
+{
+	printf("led blue task start\n");
+	int i, count = 0;
+	pinMode(4, OUTPUT);
+	
+	for (i = 0; i < (int)arg; i++, count++)
+	{
+		digitalWrite(4, HIGH);
+		printf("blue ON\n");
+		delay(2000);
+		digitalWrite(4, LOW);
+		printf("blue OFF\n");
+		delay(2000);
+	}
+
+	printf("led blue task end\n");
+	pthread_exit((void *)count);
+}

0814/led_main.c

+#include "led.h"
+
+void *led_main_task();
+
+int main(int argc, char *argv[])
+{
+	int i, task_mode = 0, task_repeat;
+	pthread_t red, blue, orange;
+	void *main_result = NULL, *blue_result = NULL, *orange_result = NULL;
+	
+	if(argc != 1 && argc != 3)
+	{
+		printf("Usage : %s GPIO_NO\n", argv[0]);
+		exit(1);
+	}
+	if (argc == 3)
+	{
+		task_mode = atoi(argv[1]);
+		task_repeat = atoi(argv[2]);
+	}
+	for (i = 0; argv[i]; i++)
+	{
+		printf("%s ", argv[i]);
+	}
+	printf("\n");
+	
+	wiringPiSetup();
+	
+	if (task_mode == 0)
+	{
+		pthread_create(&red, NULL, led_main_task, NULL);
+		pthread_join(red, &main_result);
+		printf("led red blinked %d times\n", (int)main_result);
+	}
+	else if (task_mode == 1)
+	{
+		pthread_create(&red, NULL, led_main_task, NULL);
+		pthread_create(&blue, NULL, led_blue_task, (void *)task_repeat);
+		pthread_join(red, &main_result);
+		printf("led red blinked %d times\n", (int)main_result);
+		pthread_join(blue, &blue_result);
+		printf("led blue blinked %d times\n", (int)blue_result);
+	}
+	else if (task_mode == 2)
+	{
+		pthread_create(&red, NULL, led_main_task, NULL);
+		pthread_create(&orange, NULL, led_orange_task, (void *)task_repeat);
+		pthread_join(red, &main_result);
+		printf("led red blinked %d times\n", (int)main_result);
+		pthread_join(orange, &orange_result);
+		printf("led orange blinked %d times\n", (int)orange_result);
+	}
+	else if (task_mode == 3)
+	{
+		pthread_create(&red, NULL, led_main_task, NULL);
+		pthread_create(&blue, NULL, led_blue_task, (void *)task_repeat);
+		pthread_create(&orange, NULL, led_orange_task, (void *)task_repeat);
+		pthread_join(red, &main_result);
+		printf("led red blinked %d times\n", (int)main_result);
+		pthread_join(blue, &blue_result);
+		printf("led blue blinked %d times\n", (int)blue_result);
+		pthread_join(orange, &orange_result);
+		printf("led orange blinked %d times\n", (int)orange_result);
+	}
+
+	return 0;
+}
+
+void *led_main_task()
+{
+	printf("led main task start\n");
+	int i, count = 0;
+	pinMode(1, OUTPUT);
+	
+	for (i = 0; i < 10; i++, count++)
+	{
+		digitalWrite(1, HIGH);
+		printf("red ON\n");
+		delay(1000);
+		digitalWrite(1, LOW);
+		printf("red OFF\n");
+		delay(1000);
+	}
+	
+	printf("led main task end\n");
+	pthread_exit((void *)count);
+}

0814/led_main.txt

+./led_main 
+led main task start
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+led main task end
+led red blinked 10 times

0814/led_main_1_5.txt

+./led_main 1 5 
+led main task start
+red ON
+led blue task start
+blue ON
+red OFF
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+red OFF
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+red OFF
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+red OFF
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+red OFF
+blue OFF
+red ON
+red OFF
+led blue task end
+led main task end
+led red blinked 10 times
+led blue blinked 5 times

0814/led_main_2_3.txt

+./led_main 2 3 
+led main task start
+red ON
+led orange task start
+orange ON
+red OFF
+red ON
+orange OFF
+red OFF
+red ON
+red OFF
+orange ON
+red ON
+red OFF
+red ON
+orange OFF
+red OFF
+red ON
+red OFF
+orange ON
+red ON
+red OFF
+red ON
+orange OFF
+red OFF
+red ON
+red OFF
+led orange task end
+red ON
+red OFF
+led main task end
+led red blinked 10 times
+led orange blinked 3 times

0814/led_main_3_3.txt

+./led_main 3 3 
+led main task start
+red ON
+led orange task start
+orange ON
+led blue task start
+blue ON
+red OFF
+red ON
+blue OFF
+orange OFF
+red OFF
+blue ON
+red ON
+red OFF
+orange ON
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+orange OFF
+red OFF
+blue OFF
+red ON
+red OFF
+orange ON
+led blue task end
+red ON
+red OFF
+red ON
+orange OFF
+red OFF
+red ON
+red OFF
+led orange task end
+red ON
+red OFF
+led main task end
+led red blinked 10 times
+led blue blinked 3 times
+led orange blinked 3 times

0814/led_orange.c

+#include "led.h"
+
+void *led_orange_task(void *arg)
+{
+	printf("led orange task start\n");
+	int i, count = 0;
+	pinMode(5, OUTPUT);
+	
+	for (i = 0; i < (int)arg; i++, count++)
+	{
+		digitalWrite(5, HIGH);
+		printf("orange ON\n");
+		delay(3000);
+		digitalWrite(5, LOW);
+		printf("orange OFF\n");
+		delay(3000);
+	}
+
+	printf("led orange task end\n");
+	pthread_exit((void *)count);
+}