diff options
Diffstat (limited to 'll-can-binding.h')
-rw-r--r-- | ll-can-binding.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/ll-can-binding.h b/ll-can-binding.h new file mode 100644 index 0000000..6280cc4 --- /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(); |