prevent multi include

controller/controller.c

@@ -13,7 +13,9 @@
 #include <stdlib.h>
 
 #include "global.h"
+#ifndef RINGBUFFER_H
 #include "ringbuffer.h"
+#endif
 
 #define IIC_DEVICE "/dev/i2c-7"
 #define BUFFER_BLOCKS 128

controller/ringbuffer.c

@@ -1,4 +1,6 @@
+#ifndef RINGBUFFER_H
 #include "ringbuffer.h"
+#endif
 
 void _ringBufferIncReader(struct ringBuffer *buf) {
   buf->reader += buf->blockSize;

controller/ringbuffer.h

@@ -6,6 +6,8 @@
 #include <pthread.h>
 #endif
 
+#define RINGBUFFER_H
+
 struct ringBuffer {
   void *buffer;
   int blocks;