Reworked open_can_dev function and can_handler struct

Change-Id: I787730cf2ef8dfd7b1db7f9add51700401e013c1
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

1 files changed, 111 insertions, 0 deletions

diff --git a/ll-can-binding.h b/ll-can-binding.h
new file mode 100644
index 00000000..6280cc4c
--- /dev/null
+++ b/ll-can-binding.h
@@ -0,0 +1,111 @@
+/* max. number of CAN interfaces given on the cmdline */
+#define MAXSOCK 16
+
+/* buffer sizes for CAN frame string representations */
+#define CL_ID (sizeof("12345678##1"))
+#define CL_DATA sizeof(".AA")
+#define CL_BINDATA sizeof(".10101010")
+
+ /* CAN FD ASCII hex short representation with DATA_SEPERATORs */
+#define CL_CFSZ (2*CL_ID + 64*CL_DATA)
+
+#define CANID_DELIM '#'
+
+/*
+ * Interface between the daemon and the binding
+ */
+static const struct afb_binding_interface *interface;
+
+/*
+ * the type of position expected
+ *
+ * here, this type is the selection of protocol
+ */
+enum type {
+	type_OBDII,
+	type_CAN,
+	type_DEFAULT = type_CAN,
+	type_INVALID = -1
+};
+
+#define type_size sizeof(enum type)-2
+
+/*
+ * names of the types
+ */
+static const char * const type_NAMES[type_size] = {
+	"OBDII",
+	"CAN"
+};
+
+/* CAN variable initialization */
+struct canfd_frame canfd_frame;
+
+struct can_handler {
+	int socket;
+	char *device;
+	bool is_fdmode_on;
+	struct sockaddr_can txAddress;
+};
+
+/*
+ * each generated event
+ */
+typedef struct _event event;
+struct _event {
+	event *next;			/* link for the next event */
+	const char *name;		/* name of the event */
+	struct afb_event afb_event;	/* the event for the binder */
+	openxc_CanMessage can_message;	/* value for the can_message */
+};
+
+/*
+ * each can event, will browse by the id
+ */
+typedef struct _can_event can_event;
+struct _can_event {
+	can_event *next;	/* Link to the next other can message */
+	event *events;		/* events for the can message */
+	uint32_t id;		/* id of the event for unsubscribe */
+	enum type type;		/* the type of data expected */
+};
+
+can_event *can_events_list;
+
+/* TODO : Add help comments :p */
+static int connect_to_event_loop();
+
+const char hex_asc_upper[] = "0123456789ABCDEF";
+
+#define hex_asc_upper_lo(x) hex_asc_upper[((x) & 0x0F)]
+#define hex_asc_upper_hi(x) hex_asc_upper[((x) & 0xF0) >> 4]
+
+static inline void put_hex_byte(char *buf, __u8 byte)
+{
+	buf[0] = hex_asc_upper_hi(byte);
+	buf[1] = hex_asc_upper_lo(byte);
+}
+
+static inline void _put_id(char *buf, int end_offset, canid_t id)
+{
+	/* build 3 (SFF) or 8 (EFF) digit CAN identifier */
+	while (end_offset >= 0) {
+		buf[end_offset--] = hex_asc_upper[id & 0xF];
+		id >>= 4;
+	}
+}
+
+#define put_sff_id(buf, id) _put_id(buf, 2, id)
+#define put_eff_id(buf, id) _put_id(buf, 7, id)
+
+static void parse_can_frame(openxc_CanMessage *can_message, struct canfd_frame *canfd_frame, int maxdlen);
+
+
+// Initialize default can_handler values
+static struct can_handler can_handler = {
+	.socket = -1,
+	.device = "vcan0",
+	.is_fdmode_on = false,
+};
+
+static void send_event();