LPC1769 CANBUS

Development Boards MicroMod
1

Hi,

I am trying to communicate two LPC1769 mcu by canbus. My circuit is below. For communication, i use MCB1700 board keil canbus example. I have edited the can_setup() function as below( for p0.4 and p0.5).

void CAN_setup (uint32_t ctrl)  {
  LPC_CAN_TypeDef *pCAN = (ctrl == 1) ? LPC_CAN1 : LPC_CAN2;

  if (ctrl == 1) {
    LPC_SC->PCONP       |=  (1 << 13);           /* Enable power to CAN1 block */
    LPC_PINCON->PINSEL0 |=  (1 <<  0);           /* Pin P0.0 used as RD1 (CAN1) */
    LPC_PINCON->PINSEL0 |=  (1 <<  2);           /* Pin P0.1 used as TD1 (CAN1) */
    
    NVIC_EnableIRQ(CAN_IRQn);                    /* Enable CAN interrupt */
  } else {
    LPC_SC->PCONP       |=  (1 << 14);           /* Enable power to CAN2 block */
    LPC_PINCON->PINSEL0 |=  (1 << 9);           /* Pin P0.4 used as RD2 (CAN2) */
    LPC_PINCON->PINSEL0 |=  (1 << 11);           /* Pin P0.5 used as TD2 (CAN2) */
    
    NVIC_EnableIRQ(CAN_IRQn);                    /* Enable CAN interrupt */
  }

  LPC_CANAF->AFMR = 2;                           /* By default filter is not used */
  pCAN->MOD   = 1;                               /* Enter reset mode */
  pCAN->IER   = 0;                               /* Disable all interrupts */
  pCAN->GSR   = 0;                               /* Clear status register */
  CAN_cfgBaudrate(ctrl, 500000);                 /* Set bit timing */
  pCAN->IER   = 0x0003;                          /* Enable Tx and Rx interrupt */
}

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Until now i can not make communication. Please help me!](Adsız — Postimages)