Driver for the Microchip MCP2515 can controller. More...

Detailed Description

Driver for the Microchip MCP2515 can controller.

Files
file	candev_mcp2515.h
	Definition of the implementation of the CAN controller driver.

file	mcp2515_params.h
	Parameters for the CAN driver implementation.

file	mcp2515.h
	Driver for the Microchip MCP2515 can controller.

file	mcp2515_defines.h
	Driver for the Microchip MCP2515 can controller.

file	mcp2515_spi.h
	Driver for the Microchip MCP2515 can controller.

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)

Macro Definition Documentation

◆ CANDEV_MCP2515_DEFAULT_BITRATE

#define CANDEV_MCP2515_DEFAULT_BITRATE 500000

Default CAN bitrate.

Definition at line 43 of file candev_mcp2515.h.

◆ CANDEV_MCP2515_DEFAULT_SPT

#define CANDEV_MCP2515_DEFAULT_SPT 875

Default sampling point setup.

Definition at line 50 of file candev_mcp2515.h.

◆ MCP2515_FILTERS

#define MCP2515_FILTERS (MCP2515_FILTERS_MB0 + MCP2515_FILTERS_MB1)

Definition at line 81 of file candev_mcp2515.h.

◆ MCP2515_FILTERS_MB0

#define MCP2515_FILTERS_MB0 2

Definition at line 79 of file candev_mcp2515.h.

◆ MCP2515_FILTERS_MB1

#define MCP2515_FILTERS_MB1 4

Definition at line 80 of file candev_mcp2515.h.

◆ MCP2515_RX_MAILBOXES

#define MCP2515_RX_MAILBOXES 2

Definition at line 78 of file candev_mcp2515.h.

◆ MCP2515_TX_MAILBOXES

#define MCP2515_TX_MAILBOXES 3

Number of transmit mailboxes.

Definition at line 56 of file candev_mcp2515.h.

Typedef Documentation

◆ candev_mcp2515_t

typedef struct candev_mcp2515 candev_mcp2515_t

MCP2515 candev descriptor.

Definition at line 85 of file candev_mcp2515.h.

Function Documentation

◆ candev_mcp2515_init()

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.

Parameters

[out]	dev	mcp2515 device descriptor
[in]	conf	mcp2515 configuration

Detailed Description

Files

Data Structures

Macros

Typedefs

Functions

Receive mailboxes and filters number