sja1000.c File Reference

Driver for SJA1000 CAN-Bus controller. More...

#include <string.h>
#include <sys/heap.h>
#include <sys/thread.h>
#include <sys/event.h>
#include <sys/atom.h>
#include <sys/timer.h>
#include <sys/semaphore.h>
#include <sys/nutconfig.h>
#include <dev/irqreg.h>
#include <dev/can_dev.h>
#include <dev/sja1000.h>
#include <cfg/arch/avr.h>

Include dependency graph for sja1000.c:

Go to the source code of this file.

Data Structures
struct	_CANBuffer
Defines
#define	SJA_SIGNAL   sig_INTERRUPT7
#define	SJA_EICR   EICRB
#define	SJA_SIGNAL_BIT   7
#define	SJA_BASE   0x8800
#define	CAN_BufSize   64
Typedefs
typedef struct _CANBuffer	CANBuffer
Functions
void	CANBufferInit (CANBuffer *buffer, uint16_t size)
CANFRAME	CANBufferGetMutex (CANBuffer *buffer)
void	CANBufferPutMutex (CANBuffer *buffer, CANFRAME *data)
CANFRAME	CANBufferGet (CANBuffer *buffer)
void	CANBufferPut (CANBuffer *buffer, CANFRAME *data)
uint16_t	CANBufferFree (CANBuffer *buffer)
uint8_t	SJARxAvail (NUTDEVICE *dev)
	checks if data is available in input buffer
uint8_t	SJATxFree (NUTDEVICE *dev)
	checks if there's still space in output buffer
void	SJAOutput (NUTDEVICE *dev, CANFRAME *frame)
	Write a frame from to output buffer.
uint8_t	SJAInput (NUTDEVICE *dev, CANFRAME *frame)
	Reads a frame from input buffer.
void	SJASetAccCode (NUTDEVICE *dev, uint8_t *ac)
	Sets the acceptance code.
void	SJASetAccMask (NUTDEVICE *dev, uint8_t *am)
	Sets the acceptance mask.
uint8_t	SJASetBaudrate (NUTDEVICE *dev, uint32_t baudrate)
	Sets the baudrate.
void	SJATxFrame (CANFRAME *CAN_frame)
	Sends a CAN Frane.
void	SJARxFrame (CANFRAME *CAN_frame)
	Receives a CAN Frane.
void	CAN_Tx (void *arg)
	CAN transmitter thread.
int	SJAInit (NUTDEVICE *dev)
	Initialize SJA1000 Canbus interface.
Variables
CANINFO	dcb_sja1000
volatile uint16_t	sja_base = 0x0000
CANBuffer	CAN_RX_BUF
CANBuffer	CAN_TX_BUF
IFCAN	ifc_sja1000
	Interface information structure.
NUTDEVICE	devSJA1000
	Device information structure.

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Detailed Description

Driver for SJA1000 CAN-Bus controller.

The SJA1000 controller is connected to the memory bus. It's base address and interrupt is set by NutRegisterDevice.

Have a look to our m-can board if you have questions.

Definition in file sja1000.c.