- Generated on Thu Mar 27 2025 18:21:00 by
1.9.1
CAN Data Link Layer. More...
CAN Data Link Layer.
The Data Link Layer is composed of the device, router, pkt and dll files. It can be used to send and receive raw CAN frames through multiple CAN controllers.
Files | |
| file | can.h |
| Definitions high-level CAN interface. | |
| file | device.h |
| Definitions of CAN device interface. | |
| file | dll.h |
| Definitions of low-level CAN DLL interface. | |
| file | pkt.h |
| CAN memory allocation module. | |
| file | raw.h |
| Definitions high-level RAW CAN interface. | |
| file | router.h |
| Functions for routing RX can frames. | |
Data Structures | |
| struct | can_frame |
| Controller Area Network frame. More... | |
| struct | can_filter |
| Controller Area Network filter. More... | |
| struct | can_bittiming |
| CAN bit-timing parameters. More... | |
| struct | can_bittiming_const |
| CAN hardware-dependent bit-timing constant. More... | |
Typedefs | |
| typedef uint32_t | canid_t |
| Controller Area Network Identifier structure. More... | |
| typedef struct can_frame | can_frame_t |
| CAN frame. | |
Enumerations | |
| enum | can_state { CAN_STATE_ERROR_ACTIVE = 0 , CAN_STATE_ERROR_WARNING , CAN_STATE_ERROR_PASSIVE , CAN_STATE_BUS_OFF , CAN_STATE_STOPPED , CAN_STATE_SLEEPING , CAN_STATE_MAX } |
| CAN operational and error states. More... | |
| #define | CAN_MAX_DLEN (8) |
| Max data length for classic and FD CAN frames (compliant with libsocketcan macros) More... | |
| #define | CANFD_MAX_DLEN (64) |
| CAN FD maximum data length. | |
CAN_ID flags and masks | |
| #define | CAN_EFF_FLAG (0x80000000U) |
| EFF/SFF is set in the MSB. | |
| #define | CAN_RTR_FLAG (0x40000000U) |
| remote transmission request | |
| #define | CAN_ERR_FLAG (0x20000000U) |
| error message frame | |
| #define | CAN_SFF_MASK (0x000007FFU) |
| standard frame format (SFF) | |
| #define | CAN_EFF_MASK (0x1FFFFFFFU) |
| extended frame format (EFF) | |
| #define | CAN_ERR_MASK (0x1FFFFFFFU) |
| omit EFF, RTR, ERR flags | |
CAN FD flags extracted from libsocketcan | |
| #define | CANFD_BRS 0x01 |
| bit rate switch (second bitrate for payload data) | |
| #define | CANFD_ESI 0x02 |
| error state indicator of the transmitting node | |
| #define | CANFD_FDF 0x04 |
| mark CAN FD for dual use of struct canfd_frame | |
| #define CAN_MAX_DLEN (8) |
| typedef uint32_t canid_t |
Controller Area Network Identifier structure.
bit 0-28 : CAN identifier (11/29 bit) right aligned for 11 bit bit 29 : error message frame flag (0 = data frame, 1 = error message) bit 30 : remote transmission request flag (1 = rtr frame) bit 31 : frame format flag (0 = standard 11 bit, 1 = extended 29 bit)
| enum can_state |
CAN operational and error states.
1.9.1