started writing actual cape code
diff --git a/bbb_cape/src/cape/fill_packet.h b/bbb_cape/src/cape/fill_packet.h
new file mode 100644
index 0000000..f3f1543
--- /dev/null
+++ b/bbb_cape/src/cape/fill_packet.h
@@ -0,0 +1,14 @@
+#ifndef CAPE_FILL_PACKET_H_
+#define CAPE_FILL_PACKET_H_
+
+#include <stdint.h>
+
+#include "cape/util.h"
+#define DATA_STRUCT_NAME DataStruct
+#include "cape/data_struct.h"
+#undef DATA_STRUCT_NAME
+
+// Starts writing out sensor packets as fast as the serial port can write them.
+void fill_packet_start(void);
+
+#endif // CAPE_FILL_PACKET_H_