Multiple frames (#8)

* Add fields to mmr header

* Reorder priority constants

* Add message priority

* Add header to message

* Fix compile error

* Set correct bits in header

* Refactor

* Create queue

Inc/mmr_can.h

@@ -78,7 +78,7 @@ typedef struct {
  * Represents a CAN message
  */
 typedef struct {
-  CanId senderId;
+  MmrCanHeader header;
   void *store;
 } MmrCanMessage;
 

Inc/mmr_can_header.h

@@ -24,18 +24,30 @@ typedef enum {
 } MmrCanMessageType;
 
 
+
+typedef enum {
+  MMR_CAN_MESSAGE_PRIORITY_LOW = B_(0010),
+  MMR_CAN_MESSAGE_PRIORITY_NORMAL = B_(0001),
+  MMR_CAN_MESSAGE_PRIORITY_HIGH = B_(0000),
+} MmrCanMessagePriority;
+
+
 /**
  * @brief
  * This struct encodes the values stored inside the
  * extended id field of a CAN packet.
  */
 typedef struct {
-  uint32_t priority : 5;
-  uint32_t senderId : 23;
+  MmrCanMessagePriority priority : 3;
+  uint32_t dictionaryEntry : 10;
+  uint32_t senderId : 12;
   MmrCanMessageType messageType : 4;
 } MmrCanHeader;
 
 
+uint32_t *MMR_CAN_HeaderToBits(MmrCanHeader *header);
+MmrCanHeader *MMR_CAN_HeaderFromBits(uint32_t *bits);
+
 bool MMR_CAN_IsMultiFrame(MmrCanHeader *header);
 bool MMR_CAN_IsMultiFrameEnd(MmrCanHeader *header);
 

Inc/mmr_can_queue.h

@@ -0,0 +1,14 @@
+#ifndef INC_MMR_CAN_QUEUE_H_
+#define INC_MMR_CAN_QUEUE_H_
+
+#include <stdint.h>
+#include "mmr_can.h"
+
+#define MMR_CAN_QUEUE_SIZE 10
+
+typedef struct {
+  MmrCanMessage messages[MMR_CAN_QUEUE_SIZE];
+  size_t count;
+} MmrCanQueue;
+
+#endif /* INC_MMR_CAN_QUEUE_H_ */