Updated with latest changes

examples/okLed.c

@@ -0,0 +1,65 @@
+/*
+ * okLed:
+ *      Make the OK LED on the Pi Pulsate...
+ *    Copyright (c) 2012 gordon Henderson, but please Share and Enjoy!
+ *
+ * Originally posted to the Raspberry Pi forums:
+ *  http://www.raspberrypi.org/phpBB3/viewtopic.php?p=162581#p162581
+ *
+ * Compile this and store it somewhere, then kick it off at boot time
+ *    e.g. by putting it in /etc/rc.local and running it in the
+ *    background &
+ *
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <wiringPi.h>
+#include <softPwm.h>
+
+#define OK_LED  16
+
+int main ()
+{
+  int fd, i ;
+
+  if ((fd = open ("/sys/class/leds/led0/trigger", O_RDWR)) < 0)
+  {
+    fprintf (stderr, "Unable to change LED trigger: %s\n", strerror (errno)) ;
+    return 1 ;
+  }
+
+  write (fd, "none\n", 5) ;
+  close (fd) ;
+
+  if (wiringPiSetupGpio () < 0)
+  {
+    fprintf (stderr, "Unable to setup GPIO: %s\n", strerror (errno)) ;
+    return 1 ;
+  }
+
+  softPwmCreate (OK_LED, 0, 100) ;
+
+  for (;;)
+  {
+    for (i = 0 ; i <= 100 ; ++i)
+    {
+      softPwmWrite (OK_LED, i) ;
+      delay (10) ;
+    }
+    delay (50) ;
+
+    for (i = 100 ; i >= 0 ; --i)
+    {
+      softPwmWrite (OK_LED, i) ;
+      delay (10) ;
+    }
+    delay (10) ;
+  }
+
+  return 0 ;
+}