blob: a0a2c2abed4428f4c82ef4c336b6703d0ef50380 (
plain)
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
|
#ifndef __CANBUS_H__
#define __CANBUS_H__
#include <stdint.h> // uint32_t
struct canbus_msg {
uint32_t id;
uint32_t dlc;
union {
uint8_t data[8];
uint32_t data32[2];
};
};
#define CANMSG_ID_RTR (1<<30)
#define CANMSG_ID_EFF (1<<31)
#define CANMSG_DATA_LEN(msg) ((msg)->dlc > 8 ? 8 : (msg)->dlc)
struct canbus_status {
uint32_t rx_error, tx_error, tx_retries;
uint32_t bus_state;
};
enum {
CANBUS_STATE_ACTIVE, CANBUS_STATE_WARN, CANBUS_STATE_PASSIVE,
CANBUS_STATE_OFF,
};
// callbacks provided by board specific code
int canhw_send(struct canbus_msg *msg);
void canhw_set_filter(uint32_t id);
void canhw_get_status(struct canbus_status *status);
// canbus.c
int canbus_send(struct canbus_msg *msg);
void canbus_set_filter(uint32_t id);
void canbus_notify_tx(void);
void canbus_process_data(struct canbus_msg *msg);
#endif // canbus.h
|
