dawn::CIsoTp Class Reference

ISO-TP (ISO 15765-2) transport protocol helper. More...

#include <isotp.hxx>

Static Public Member Functions
static int	receive (const porting::canmsg_s &msg, State &state, void *data_buf, size_t buf_size, uint64_t now, uint64_t timeout)
	Process incoming ISO-TP frame.
static int	receiveCustom (const porting::canmsg_s &msg, State &state, void *data_buf, size_t buf_size, uint8_t seg_no, bool seg_last, uint64_t now, uint64_t timeout)
	Process incoming Custom Segmented frame (Dawn specific).

Static Public Attributes
static uint8_t	FRAME_CF = 0x20
	Consecutive Frame (0x2N)
static uint8_t	FRAME_FC = 0x30
	Flow Control (0x3N)
static uint8_t	FRAME_FF = 0x10
	First Frame (0x1N)
static uint8_t	FRAME_SF = 0x00
	Single Frame (0x0N)

Detailed Description

ISO-TP (ISO 15765-2) transport protocol helper.

Minimal ISO-TP implementation for CAN segmented transfers. Uses standard ISO-TP frame format but without flow control. Relies on CAN hardware reliability instead of flow control.

This class will be replaced by NuttX ISO-TP implementation in the future.

Definition at line 31 of file isotp.hxx.

Member Function Documentation

receive()

int CIsoTp::receive ( const porting::canmsg_s &  msg, State &  state, void *  data_buf, size_t  buf_size, uint64_t  now, uint64_t  timeout  )

static

Process incoming ISO-TP frame.

Handles FF/CF, manages state and timeouts. Returns -ENOMSG if frame is not an ISO-TP FF/CF.

Returns

0 on success (in progress), 1 on complete, negative error.

Definition at line 178 of file isotp.cxx.

References FRAME_CF, and FRAME_FF.

receiveCustom()

int CIsoTp::receiveCustom ( const porting::canmsg_s &  msg, State &  state, void *  data_buf, size_t  buf_size, uint8_t  seg_no, bool  seg_last, uint64_t  now, uint64_t  timeout  )

static

Process incoming Custom Segmented frame (Dawn specific).

Used for INDEXED_WRITE and WRITE_ALL segmented transfers.

Returns

0 on success (in progress), 1 on complete, negative error.

Definition at line 242 of file isotp.cxx.

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The documentation for this class was generated from the following files:

• dawn/include/dawn/proto/can/isotp.hxx
• dawn/src/proto/can/isotp.cxx