AN1105 datasheet(21/100 Pages) STMICROELECTRONICS

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ST7 pCAN PERIPHERAL DRIVER

{CAN_RUN,CAN_STANDBY,CAN_BUS_ACTIVE,CAN_BUS_PASSIVE,CAN_BUS_OFF}CAN_Status;

Describes the different states of the cell.

typedef enum {CFALSE=0,CTRUE=1}CAN_Bool;

Custom Boolean type variable.

typedef enum {BUS_WAKEUP,SOFT_WAKEUP}WakeUp_Cause;

Possible parameters of the CAN_Sleep and CAN_Switch_Off functions. (See Section 2.1.5.2

"Functions".)

typedef

enum{CAN_SLEEP_ERROR,CAN_SLEEP_SUCCESS,CAN_SWITCH_ON_SUCCES,CAN_SWITCH_ON_FA

ILURE}CAN_Switch_Error;

Possible values returned by CAN_Sleep, CAN_Switch_Off and CAN_Switch_On functions

(See Section 2.1.5.2 "Functions")

typedef enum {CAN_INIT_SUCCESS,CAN_INIT_FAILURE}CAN_Init_Error;

Possible values returned by CAN_First_Init function (See Section 2.1.5.2 "Functions")

typedef enum

{CAN_TRANSMIT_SUCCESS,CAN_TRANSMIT_FAILURE,CAN_TRANSMIT_NO_MSG,CAN_FIFO_FULL

,CAN_TRANSMIT_BUFFER_FULL,CAN_TRANSMISSION_ERROR_IT}CAN_Transmit_Error;

Error codes used in Transmission functions.(See Section 2.1.5.2 "Functions")

typedef enum

{CAN_RECEIVE_SUCCESS,CAN_RECEIVE_REMOTE,CAN_ILLEGAL_IDENTIFIER,CAN_FILTERING

_FAILURE,CAN_RECEIVE_FAILURE,CAN_BUFFER_IN_USE,CAN_NO_BUFFER,CAN_RCV_BUFFER_

NOT_READY}CAN_Receive_Error;

Error codes used in Reception functions. (See Section 3.2.2 "Internal Routines").

Note: With some compilers, an option is used to define the size, in bytes, of enum-type variables. We rec-

ommend selecting 1 byte, if possible, to save memory space.

You can see in which case the different error codes are returned by the functions by studying

the flow charts in Section 3.2.2 "Internal Routines" for internal functions and Section 3.1 "User

interface functions" for user interface functions.

You also find this information in the arrays of Section 2.1.5.2 "Functions" for user-interface

routines and Section 3.2.2 "Internal Routines" for internal routines.

2.1.5.2 Functions

CAN_Init_Error CAN_First_Init(void):

Input

Output

Error status

AN1105 Datasheet(PDF) 21 Page - STMicroelectronics