diff --git a/libringbuffer/include/ringbuffer/ringbuffer.h b/libringbuffer/include/ringbuffer/ringbuffer.h
index 9252d0e..d7ca8d9 100644
--- a/libringbuffer/include/ringbuffer/ringbuffer.h
+++ b/libringbuffer/include/ringbuffer/ringbuffer.h
@@ -29,6 +29,12 @@ typedef struct ringbuffer ringbuffer_t;
  */
 ringbuffer_t *rb_new(void *base, size_t size);
 
+/* Check if ring buffer has data
+ *  r - Buffer to check
+ * Returns Boolean representing if ringbuffer has data.
+ */
+int rb_has_data(ringbuffer_t *r);
+
 /* Send a byte.
  *  r - Buffer to send via.
  *  c - Byte to send.
diff --git a/libringbuffer/src/ringbuffer.c b/libringbuffer/src/ringbuffer.c
index e4b8b0e..8ba8509 100644
--- a/libringbuffer/src/ringbuffer.c
+++ b/libringbuffer/src/ringbuffer.c
@@ -28,6 +28,11 @@ ringbuffer_t *rb_new(void *base, size_t size)
     return r;
 }
 
+int rb_has_data(ringbuffer_t *r)
+{
+    return (r->base[r->offset] == 0);
+}
+
 void rb_transmit_byte(ringbuffer_t *r, unsigned char c)
 {
     /* We can't send 0s. */