blob: 6489c6fcb65023238f8a7eba15411fbe537e5634 (
plain) (
blame)
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
|
/** DBC Signals.
* See "DBC File Format Documentation" v.01/2007
*
* Device PIC16F1459
* Compiler: XC8 v3.00
*
* Usage:
*
* #include <stdbool.h>
* #include <stdint.h>
* #include "types.h"
* #include "can.h"
* #include "signal.h"
*/
// Byte order
typedef enum {
BIG_ENDIAN = 0,
LITTLE_ENDIAN,
} ByteOrder;
// A Signal Format defines how a DBC signal is encoded in a CAN frame.
typedef struct {
CanId id; // ID of message containing the signal
U8 start; // start bit -- position of signal within DATA FIELD
U8 size; // size of the signal in bits
ByteOrder order; // big-endian/little-endian
bool isSigned;
} SigFmt;
// Extract the raw signal value out of a CAN frame's DATA FIELD.
// Assumes the frame's ID matches that of the signal.
Status sigPluck(const SigFmt *sig, const CanFrame *frame, Number *raw);
|