This source file is part of CAN/CAN FD bus common support. It implements bit timing calculation. More...

#include <limits.h>
#include <stdlib.h>
#include <dev/can/can.h>
#include <dev/can/can-devcommon.h>

Macros
#define	CAN_CALC_MAX_ERROR 50 /* in one-tenth of a percent */

#define	CAN_CALC_SYNC_SEG 1

Functions
int	rtems_can_bitrate2bittiming (struct rtems_can_chip chip, struct rtems_can_bittiming bt, const struct rtems_can_bittiming_const *btc)
	This function calculates CAN bit timing for given bit rate.

Detailed Description

This source file is part of CAN/CAN FD bus common support. It implements bit timing calculation.

Implementation is based on original LinCAN - Linux CAN bus driver Part of OrtCAN project https://ortcan.sourceforge.net/

Function Documentation

int rtems_can_bitrate2bittiming	(	struct rtems_can_chip *	chip,
		struct rtems_can_bittiming *	bt,
		const struct rtems_can_bittiming_const *	btc
	)

This function calculates CAN bit timing for given bit rate.

This calculates bit timing values for given bit rate (provided in bt input argument) and controller's maximum/minimal values given by btc argument.

Parameters

chip	Pointer to rtems_can_chip structure.
bt	Pointer to rtems_can_bittiming structure. Calculated values are stored here.
btc	Pointer to rtems_can_bittiming_const structure. This provides maximum and minimal bit timing values of the controller.