can_frame Struct Reference

CAN frame structure. More...

#include <can.h>

Data Fields
uint32_t	id
	Standard (11-bit) or extended (29-bit) CAN identifier.
uint8_t	dlc
	Data Length Code (DLC) indicating data length in bytes.
uint8_t	flags
	Flags.
uint16_t	timestamp
	Captured value of the free-running timer in the CAN controller when this frame was received.
union {
uint8_t   data [CAN_MAX_DLEN]
	Payload data accessed as unsigned 8 bit values. More...
uint32_t   data_32 [DIV_ROUND_UP(CAN_MAX_DLEN,        sizeof(uint32_t))]
	Payload data accessed as unsigned 32 bit values. More...
};
	The frame payload data.

Detailed Description

CAN frame structure.

Field Documentation

[union]

union { ... } can_frame

The frame payload data.

data

uint8_t can_frame::data[CAN_MAX_DLEN]

Payload data accessed as unsigned 8 bit values.

data_32

uint32_t can_frame::data_32[DIV_ROUND_UP(CAN_MAX_DLEN, sizeof(uint32_t))]

Payload data accessed as unsigned 32 bit values.

dlc

uint8_t can_frame::dlc

Data Length Code (DLC) indicating data length in bytes.

flags

uint8_t can_frame::flags

Flags.

See also

CAN_FRAME_FLAGS.

id

uint32_t can_frame::id

Standard (11-bit) or extended (29-bit) CAN identifier.

timestamp

uint16_t can_frame::timestamp

Captured value of the free-running timer in the CAN controller when this frame was received.

The timer is incremented every bit time and captured at the start of frame bit (SOF).

Note

CONFIG_CAN_RX_TIMESTAMP must be selected for this field to be available.

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The documentation for this struct was generated from the following file:

• zephyr/drivers/can.h