Rev 24 | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | SVN | RSS feed
| Rev 24 | Rev 25 | ||
|---|---|---|---|
| - | 1 | /********************************************************************* |
|
| - | 2 | * |
|
| - | 3 | * CAN specification |
|
| - | 4 | * |
|
| - | 5 | ********************************************************************* |
|
| - | 6 | * FileName: CANdefs.h |
|
| - | 7 | * |
|
| - | 8 | * Author Date Comment |
|
| - | 9 | *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
|
| - | 10 | * Johan Böhlin 21-10-06 Original (Rev 1.0) |
|
| - | 11 | ********************************************************************/ |
|
| - | 12 | ||
| 1 | #ifndef CANDEFS_H |
13 | #ifndef CANDEFS_H |
| 2 | #define CANDEFS_H |
14 | #define CANDEFS_H |
| 3 | 15 | ||
| 4 | #include "../Include/compiler.h" |
16 | #include "../Include/compiler.h" |
| 5 | 17 | ||
| 6 | #define CAN_BAUD 0.250000 //in Mbits/s |
18 | #define CAN_BAUD 0.250000 //in Mbits/s |
| 7 | #define CAN_LOOPBACK_MODE |
19 | #define CAN_LOOPBACK_MODE |
| 8 | 20 | ||
| 9 | 21 | ||
| 10 | // TQ(us) = (2 * (BRP + 1))/FOSC(MHz) |
22 | // TQ(us) = (2 * (BRP + 1))/FOSC(MHz) |
| 11 | // Nominal Bit Rate(kbit/s) = 1 / TBIT = 1 / (TQ(us) * 8) |
23 | // Nominal Bit Rate(kbit/s) = 1 / TBIT = 1 / (TQ(us) * 8) |
| 12 | // Where 8 is nominal bit time. |
24 | // Where 8 is nominal bit time. |
| 13 | // From this, BRP can be calculated. |
25 | // From this, BRP can be calculated. |
| 14 | // |
26 | // |
| 15 | // Nominal Bit Rate(kbit/s) = 1 / TBIT = 1 / ((2 * (BRP + 1))/FOSC(MHz) * 8) |
27 | // Nominal Bit Rate(kbit/s) = 1 / TBIT = 1 / ((2 * (BRP + 1))/FOSC(MHz) * 8) |
| 16 | 28 | ||
| 17 | #define CAN_BRP (int)(CLOCK_FOSC/(CAN_BAUD * 16) - 1) |
29 | #define CAN_BRP (int)(CLOCK_FOSC/(CAN_BAUD * 16) - 1) |
| 18 | 30 | ||
| 19 | 31 | ||
| 20 | #endif //CANdefs.h |
32 | #endif //CANdefs.h |
| 21 | 33 | ||