AN1105 datasheet(69/100 Pages) STMICROELECTRONICS

номер детали	AN1105

подробное описание детали	ST7 pCAN PERIPHERAL DRIVER

PDF	100 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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69 / 100 page

69/100

ST7 pCAN PERIPHERAL DRIVER

state than after 1st. init

CAN_transmit_queue.fifo_size=0;

CAN_queue_object_1.message=NULL;

CAN_queue_object_2.message=NULL;

CAN_queue_object_3.message=NULL;

CAN_transmit_queue.isinuse=CFALSE;//Releases the queue

//Hardware cleaning (releases the hardware buffers)

CANPSR=PAGE_3;

while (CANPSR>0)

{

Clr_RDY_Bit();

CANPSR--;

}

//IT cleaning : clears any pending IT flag

CANISR=CANISR&0;

return CAN_CLEAN_SUCCESS;

}

else

{

return CAN_CLEAN_FAILURE;

}

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

ROUTINE NAME : CAN_Fill_Transmission_Buffer

INPUT/OUTPUT : -- / error status

DESCRIPTION : Fills the hadrware buffer for transmission.

COMMENTS

: ITs have to be disabled

Called by CAN_Transmit_Request

Calls CAN_Out_Queue

Possible return values : CAN_TRANSMIT_BUFFER_FULL

CAN_TRANSMIT_NO_MSG

CAN_TRANSMIT_SUCCESS

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

CAN_Transmit_Error CAN_Fill_Transmission_Buffer(void)

{

CANPSR=PAGE_1;

AN1105 датащи(PDF) 69 Page - STMicroelectronics