8.10

8.10/ledTest.c

+#include <stdio.h>
+#include <wiringPi.h>
+// gcc test.c -lwiringPi
+int main()
+{
+	int i;
+	if (wiringPiSetup() == -1)
+		return -1;
+	pinMode(29, OUTPUT);
+	for (i = 0; i < 5; i++)
+	{
+		digitalWrite(29, 1);
+		delay(500);
+		digitalWrite(29, 0);
+		delay(500);
+	}
+	return 0;
+}