SH7047F datasheet(13/85 Pages) RENESAS

13 / 85 page

Rev. 1.00, 08/03, page 5 of 74

1.5

Transmission Program Listing

/********************************************************************************/

HCAN-2 Transmission Program (Example 1)

/********************************************************************************/

#include <stdio.h>

/* Library function header file */

#include <machine.h>

/* Library function header file */

#include "SH7047.h"

/* Peripheral register definition header file */

/********************************************************************************/

Function prototype declarations

/********************************************************************************/

void t_main(void );

/********************************************************************************/

Main routine

/********************************************************************************/

void t_main(void){

unsigned short *work;

/* Clear bit MCR0 */

HCAN_MCR = 0x0000;

/* Clear reset request bit */

/* Clear bit IRR0 */

HCAN_IRR = 0x0001;

/* Clear reset interrupt flag (to clear, write 1) */

/* Set pins */

PB.PBCR1 = 0x0000;

/* Set PB HCAN-2 */

PB.PBCR2 = 0x000F;

/* Set PB HCAN-2 */

/* Set bit rate (BCR): bit rate is 250 kbps when

φ = 50 MHz */

HCAN_BCR0 = 0x0009;

/* BRP=9(10 system clock) */

HCAN_BCR1 = 0x4300;

/* TSEG1=4(5tq),TSEG2=3(4tq) */

/* Initialize mailbox */

work = (unsigned short *)0xFFFFB100;

do {

*work = 0xFFFF;

work++;

} while(work < (unsigned short *) 0xFFFFB4F4);

/* Set MBC */

HCAN_MB1.MC4 = 0x01;

/* Set mailbox 1 as for transmission */

/* Set transmission method */

HCAN_MB1.MC0 = 0x5550;

/* Select data frame and standard format,

set identifier */

HCAN_MB1.MC5 = 0x01;

/* Set data length: 1 byte */

/* Set transmission data */

HCAN_MB1.MD7 = 0xAA;

/* Set transmission data: 10101010 */

/* Set message transmission wait status */

HCAN_TXPR0 = 0x0002;

/* Set mailbox 1 to transmission wait status */

/* Wait for transmission end */

while((HCAN_TXACK0 & 0x0002) != 0x0002);

/* Clear transmission end flag */

HCAN_TXACK0 = 0x0002;

/* Clear transmission end flag (to clear, write 1) */

while(1);

}

SH7047F Datasheet(PDF) 13 Page - Renesas Technology Corp

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