diff --git a/libpandory.c b/libpandory.c
index da948ba..48c16e9 100644
--- a/libpandory.c
+++ b/libpandory.c
@@ -4,6 +4,10 @@
 #include <unistd.h>
 #include <sys/stat.h>
 
+void libpandory_hddled(void) {
+  system("(echo 1 > /sys/class/gpio_sw/PL7/data; sleep 0.1; echo 0 > /sys/class/gpio_sw/PL7/data) &");
+}
+
 char *libpandory_rot13(const char *src) {
   if (src == NULL) {
     return NULL;
diff --git a/libpandory.h b/libpandory.h
index c969b97..c836840 100644
--- a/libpandory.h
+++ b/libpandory.h
@@ -1,5 +1,16 @@
 #ifndef LIBPANDORY_H
 #define LIBPANDORY_H
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
 extern void libpandory_lefcheck(void);
+extern void libpandory_hddled(void);
 char *libpandory_rot13(const char *src);
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif // LIBPANDORY_H