1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/*
* Copyright (C) 2015, 2016 "IoT.bzh"
* Author "Romain Forlot" <romain.forlot@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* 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();
|
