split analog.c out intelligently and added an id to the sensor packet
diff --git a/gyro_board/src/usb/fill_packet.h b/gyro_board/src/usb/fill_packet.h
new file mode 100644
index 0000000..9acc094
--- /dev/null
+++ b/gyro_board/src/usb/fill_packet.h
@@ -0,0 +1,16 @@
+#ifndef GYRO_BOARD_FILL_PACKET_H_
+#define GYRO_BOARD_FILL_PACKET_H_
+
+#include <stdint.h>
+
+#define DATA_STRUCT_NAME DataStruct
+#include "data_struct.h"
+#undef DATA_STRUCT_NAME
+
+// Gets called in the USB data output ISR. Assumes that it will not be preempted
+// except by very high priority things.
+//
+// Implemented in encoder.c because it depends on so many things in there.
+void fillSensorPacket(struct DataStruct *packet);
+
+#endif // GYRO_BOARD_FILL_PACKET_H_