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

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

Include dependency graph for candev_mcp2515.h:

This graph shows which files directly or indirectly include this file:

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

struct	candev_mcp2515
	MCP2515 device descriptor. More...

Macros
#define	CANDEV_MCP2515_DEFAULT_BITRATE 500000
	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`.

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)

Data Structures