AN1105 datasheet(74/100 Pages) STMICROELECTRONICS

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ST7 pCAN PERIPHERAL DRIVER

Clr_RDY_Bit();

soft_buffer_ptr->buffer_rw=CFALSE;//If the buffer is full, releases it

return CAN_RECEIVE_FATAL;

//and exit

}

receive_status=CAN_Store_Rcvd_Msg(soft_buffer_ptr);

//Saves message and re-

leases the hardware buffer

//Writing identifier :

*(int*)soft_buffer_ptr = message_ident;

//End of routine :

if (receive_status!=CAN_RECEIVE_SUCCESS)

{

Clr_RDY_Bit();

soft_buffer_ptr->buffer_rw=CFALSE;//In case of failure, releases the

buffer and exits

return CAN_RECEIVE_FATAL;

}

soft_buffer_ptr->buffer_free=CFALSE;

//In case of success, marks the buffer

as in use

soft_buffer_ptr->buffer_rw=CFALSE;

//Unlock it

CAN_Data_Reception_Notification(message_ident);

return CAN_RECEIVE_SUCCESS;

}

/*--------------------------------------------------------------------------

ROUTINE NAME : CAN_Interrupt

INPUT/OUTPUT : -- /--

DESCRIPTION : interrupt processing function

COMMENTS

: Each case must be taken into account.

Calls

CAN_Get_IT_Type

CAN_Reception_Notification

CAN_Transmission_Notification

CAN_Fill_Transmission_Buffer

CAN_Dominant_Bit_Reception_Notification

May call (optionnal) :

CAN_Transmission_Error_Notification

CAN_Bus_Passive_Notification

CAN_Bus_Active_Notification

CAN_Bus_Off_Notification

AN1105 Datasheet(PDF) 74 Page - STMicroelectronics

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