Start adding bi-directional packet link

[fw/altos] / ao.h

diff --git a/ao.h b/ao.h
index 411b950deb23c2e22bd26c2155825863d3609862..c4cb5bf7176d526b2ea4a4bbe887684778070a59 100644 (file)
--- a/ao.h
+++ b/ao.h
@@ -743,9 +743,6 @@ struct ao_telemetry {
 void
 ao_telemetry_set_interval(uint16_t interval);
 
-void
-ao_rdf_set(uint8_t rdf);
-
 void
 ao_telemetry_init(void);
 
@@ -765,12 +762,6 @@ struct ao_radio_recv {
 void
 ao_radio_recv(__xdata struct ao_radio_recv *recv) __reentrant;
 
-void
-ao_radio_rdf(void);
-
-void
-ao_radio_rdf_abort(void);
-
 void
 ao_radio_init(void);
 
@@ -868,4 +859,68 @@ extern const char ao_version[];
 extern const char ao_manufacturer[];
 extern const char ao_product[];
 
+/*
+ * Fifos
+ */
+
+#define AO_FIFO_SIZE   32
+
+struct ao_fifo {
+       uint8_t insert;
+       uint8_t remove;
+       char    fifo[AO_FIFO_SIZE];
+};
+
+#define ao_fifo_insert(f,c) do { \
+       (f).fifo[(f).insert] = (c); \
+       (f).insert = ((f).insert + 1) & (AO_FIFO_SIZE-1); \
+} while(0)
+
+#define ao_fifo_remove(f,c) do {\
+       c = (f).fifo[(f).remove]; \
+       (f).remove = ((f).remove + 1) & (AO_FIFO_SIZE-1); \
+} while(0)
+
+#define ao_fifo_full(f)                ((((f).insert + 1) & (AO_FIFO_SIZE-1)) == (f).remove)
+#define ao_fifo_empty(f)       ((f).insert == (f).remove)
+
+/*
+ * ao_packet.c
+ *
+ * Packet-based command interface
+ */
+
+#define AO_PACKET_MAX  32
+#define AO_PACKET_WIN  256
+
+#define AO_PACKET_FIN  (1 << 0)
+#define AO_PACKET_SYN  (1 << 1)
+#define AO_PACKET_RST  (1 << 2)
+#define AO_PACKET_ACK  (1 << 3)
+
+struct ao_packet {
+       uint8_t         addr;
+       uint8_t         flags;
+       uint16_t        seq;
+       uint16_t        ack;
+       uint16_t        window;
+       uint8_t         len;
+       uint8_t         d[AO_PACKET_MAX];
+};
+
+uint8_t
+ao_packet_connect(uint8_t dest);
+
+uint8_t
+ao_packet_accept(void);
+
+int
+ao_packet_send(uint8_t *data, int len);
+
+int
+ao_packet_recv(uint8_t *data, int len);
+
+void
+ao_packet_init(void);
+
 #endif /* _AO_H_ */