can_btr.c File Reference

#include <types.h>
#include <limits.h>

Include dependency graph for can_btr.c:

Defines
#define	MAX_TSEG1   15
#define	MAX_TSEG2   7
Functions
int	lpcan_btr (uint32_t *btr, int rate, int clock, int sjw, int sampl_pt, int sam)

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Define Documentation

#define MAX_TSEG1   15

#define MAX_TSEG2   7

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Function Documentation

int lpcan_btr	(	uint32_t *	btr,
		int	rate,
		int	clock,
		int	sjw,
		int	sampl_pt,
		int	sam
	)

Parameters:

	btr	pointer to resulting BTR bit timing register value
	rate	bit rate [bit/s]
	clock	peripheral bus clock frequency [Hz]
	sjw	Synchronization Jump Width (0..3)
	sampl_pt	sampling point position 0<sampl_pt<100 [%]
	sam	0 for bus being sampled once, 1 for bus being sampled 3x

Returns:

0 if calculation successful, nonzero otherwise

Calculate the bit timing register (BTR) value according to given frequency and sampling specification.

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