Initial import

2022-10-24 19:21:04 +02:00
commit 77e97b7f40
7 changed files with 563 additions and 0 deletions
--- a/arnet_types.h
+++ b/arnet_types.h
@@ -0,0 +1,83 @@
+/* 
+ * https://ciapini.wiki.esiliati.org/view/ArNet
+ */
+
+#ifndef ARNET_TYPES_H
+#define	ARNET_TYPES_H
+
+#include <stdint.h>
+
+#include "../net.h"
+
+#define ARNET_PACKET_PROTOCOL               1 ///< 4bit net protocol id - arnet = 0
+
+#define ARNET_PADDING                       0 
+
+#define ARNET_ADDRESS_SIZE                  256 ///< max arnet address space
+#define ARNET_MAX_HEADER_NUMBER             16  ///< max arnet optional headers
+#define ARNET_MAX_PACKET_SIZE              1024+((ARNET_MAX_HEADER_NUMBER+1)*4)  ///< max arnet packet size
+
+// ERRORS & STATUS
+// #define ARNET_ERR_INVALID_SRC               1 // invalid source address
+// #define ARNET_ERR_INVALID_DST               2 // invalid destination address
+
+#define ARNET_EC_OK                         0
+#define ARNET_EC_WRONG                      1
+#define ARNET_EC_DISABLED                   2
+#define ARNET_EC_INVALID_ALGO               3
+
+#define ARNET_CRC24_INIT	0xffffff
+
+/* TODO
+typedef struct {
+    uint8_t headers_pending;
+    uint8_t headers_parsed;
+    uint8_t headers_done[ARNET_MAX_HEADER_NUMBER];
+} arnet_status;
+*/
+
+// il payload size va nella coda net
+
+typedef struct {
+    uint8_t protocol; ///< codice protocollo
+    uint8_t header_size; ///< numero di header aggiuntivi
+    uint16_t payload_size; ///< dimensione del payload in byte
+    uint8_t src_addr; ///< indirizzo mittente
+    uint8_t dst_addr; ///< indirizzo destinatario
+} DH;
+
+typedef struct {
+    uint8_t enabled;
+    // uint16_t vci;
+    uint8_t sequence;
+    uint8_t acknowledge;
+} VC;
+
+typedef struct {
+    uint8_t enabled; 
+    uint8_t algo;
+    uint8_t ARQ;
+    uint8_t ACK;
+    uint32_t value;
+} EC;
+
+typedef struct {
+    uint8_t enabled;
+    uint8_t segaddr;
+    uint8_t timeframe;
+    uint8_t beacon_period;
+    uint8_t reserved_window;
+} SAAH;
+
+typedef struct {
+    DH dh; ///< default header
+    VC vc; 
+    EC ec;
+    SAAH saah;
+} arnet_packet;
+
+extern uint8_t arnet_tx_headers_pending, arnet_tx_headers_done[16], arnet_rx_headers_parsed;
+extern arnet_packet arnet_tx_packet_queue[NET_PACKET_RINGBUF_SIZE], arnet_rx_packet_queue[NET_PACKET_RINGBUF_SIZE];
+
+#endif	/* ARNET_TYPES_H */
+