1 files changed, 52 insertions, 0 deletions
diff --git a/arduino/ace/arq.h b/arduino/ace/arq.h
new file mode 100644
index 0000000..592b0d4
--- /dev/null
+++ b/arduino/ace/arq.h
@@ -0,0 +1,52 @@
+#ifndef ARQ_H
+#define ARQ_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdbool.h>
+#include <inttypes.h>
+
+#include "framing.h"
+
+
+typedef enum {
+  RECEIVED = 0,
+  SEND_SUCCESS = 1,
+  NO_ACK = 3,
+  BAD_ACK = 4,
+  SIZE_ERROR = 5,
+  BUSY = 6
+} message_event;
+
+typedef void (*send_frame_function)(int16_t size, uint8_t* data);
+typedef void (*message_event_function)(message_event e, int16_t size, const uint8_t* const message);
+typedef void (*void_function)();
+
+typedef struct {
+  uint8_t last_sent_buffer[MAX_FRAME_SIZE];
+  int16_t last_sent_size;
+  uint8_t last_received_seq;
+  uint8_t resends;
+  bool awaiting_ack;
+  
+  send_frame_function sender;
+  message_event_function event_handler;
+  void_function start_timer;
+  void_function stop_timer;
+  
+} arq;
+
+void init_arq(arq* a);
+void receive_frame(arq* a, int16_t size, uint8_t* data);
+void timeout(arq* a);
+void send_message(arq* a, int16_t size, const uint8_t * const message);
+
+
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif /* ARQ_H */