candev_mcp2515.h File Reference

Definition of the implementation of the CAN controller driver. More...

Detailed Description

Definition of the implementation of the CAN controller driver.

Author

Toon Stegen toon..nosp@m.steg.nosp@m.en@al.nosp@m.tran.nosp@m..com

Vincent Dupont vince.nosp@m.nt@o.nosp@m.takey.nosp@m.s.co.nosp@m.m

Wouter Symons wosym.nosp@m.@air.nosp@m.sante.nosp@m.lmo..nosp@m.com

Definition in file candev_mcp2515.h.

#include <stdbool.h>
#include "can/candev.h"
#include "cpu_conf.h"
#include "periph/gpio.h"
#include "periph/spi.h"
#include "mutex.h"
#include "xtimer.h"

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Data Structures
struct	candev_mcp2515_conf
	MCP2515 configuration descriptor. More...
struct	candev_mcp2515
	MCP2515 device descriptor. More...

Macros
#define	CANDEV_MCP2515_DEFAULT_BITRATE   125000
	Default CAN bitrate.
#define	CANDEV_MCP2515_DEFAULT_SPT   875
	Default sampling point setup.
#define	MCP2515_TX_MAILBOXES   3
	Number of transmit mailboxes.

Typedefs
typedef struct candev_mcp2515	candev_mcp2515_t
	MCP2515 candev descriptor.
typedef struct candev_mcp2515_conf	candev_mcp2515_conf_t
	MCP2515 configuration descriptor.

Functions
void	candev_mcp2515_init (candev_mcp2515_t *dev, const candev_mcp2515_conf_t *conf)
	Initialize a mcp2515 device by assigning a timing and an SPI configuration conf. More...

Receive mailboxes and filters number
for RX buffers: the MCP2515 managed 6 acceptance filters in 2 mailboxes: MB0 contains 2 acceptance filters in relation with 1 acceptance mask MB1 contains 4 acceptance filters in relation with 1 acceptance mask MB0 MB1 +------+ +------+ mask 0 | RXM0 | | RXM1 | mask 1 +======+ +======+ filter 0 | RXF0 | | RXF2 | filter 2 +------+ +------+ filter 1 | RXF1 | | RXF3 | filter 3 +------+ +------+ | RXF4 | filter 4 +------+ | RXF5 | filter 5 +------+
#define	MCP2515_RX_MAILBOXES   2
#define	MCP2515_FILTERS_MB0   2
#define	MCP2515_FILTERS_MB1   4
#define	MCP2515_FILTERS   (MCP2515_FILTERS_MB0 + MCP2515_FILTERS_MB1)