main.c

富士通单片机９０５４０ＣＡＮ总线通信源代码

/**    THIS SAMPLE CODE IS PROVIDED AS IS. FUJITSU MICROELECTRONICS     **/
/** ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR OMMISSIONS **/
/****************************************************************************
/*  Date   :        2002/11/01
 *  PROJECT:        CAN
 *  Version:        No.2
 *  Program:        standard frame format
                    bit rate : 500kbps
 *                  TX0 : Buffer5(ID=300H,DTR5=A0A0H)
                    RX0 : Buffer0(ID=100H)
                          Buffer1(ID=200H)
 *  CPU    :        FMC-16LX(MB90F543G)
 *  Vcc,f  :        Vcc=5.0V,f=16MHz(4MHz x PLL4)
 *  Sorce  :        ffmc16.c,start905m.asm,pll.c
 *  Include:        f16f.h,f16fs.h,f16l.h,f16ls.h,f16lx.h,f16lxr.h,f16lxs.h,
 *                  ffmc16.h,mb90540.h,
 *  Input  :        RX0 (CAN0):(QFP:74,LQFP:72)
 *                  RX1 (CAN1):(QFP:76,LQFP:74)
 *  Output :        TX0 (CAN0):(QFP:73,LQFP:71)
 *                  TX1 (CAN1):(QFP:75,LQFP:73)
 *****************************************************************************/

#include "_ffmc16.h"
#include "extern.h"

/*****************************************************************************/
/* Main Routine */
/*****************************************************************************/

void main(void)
{
  unsigned int  fail=0;
  IO_CKSCR.byte=  0xcc; /* main */
  __wait_nop();
  __wait_nop();
  __wait_nop();
  __wait_nop();
  __wait_nop();
  __wait_nop();
  __wait_nop();
  __wait_nop();
  IO_CKSCR.byte=  0x0B;   /* PLL4 */
  while(IO_CKSCR.bit.MCM == 1 )
  {
    if(fail<0x1000) /* PLL stabilization time is max 2^12/fch. */
    {
      fail++;   /* You really had better have Fail-safe software in this area for avoiding Software-stack. */
    }
    else  break;
  }
  __set_il(7);

  __EI();

  IO_PDR4.byte = 0x0ff;
  IO_DDR4.byte = 0x0ff;

//  init_CAN0();    /*CAN0 initialize */
  init_CAN1();    /*CAN1 initialize */
  init_RELOAD0();   /*Reload Timer initialize */
  init_RELOAD1();   /*Reload Timer initialize */

  while(1)
  {
    error_judge_CAN0();
    error_judge_CAN1();
  }
}

/* Vector Table */
#pragma section INTVECT,attr=CODE
#pragma intvect _start      0x8  0  /* Reset Vector */
#pragma intvect can0_rx_int 0xb     /* CAN0 RX Vector */
#pragma intvect can0_tx_int 0xc   /* CAN0 TX Vector */
#pragma intvect can1_rx_int 0xd     /* CAN1 RX Vector */
#pragma intvect can1_tx_int 0xe   /* CAN1 TX Vector */
#pragma intvect timer0_int  0x11  /* 16bit Reload Timer0 Vector*/
#pragma intvect timer1_int  0x24  /* 16bit Reload Timer1 Vector*/
#pragma defvect dummy       /* dummy Vector */