CAN BOARD TO BOARD COMMUCTION

January 15, 2019

CAN BOARD TO BOARD COMMUCTION

CODE FOR RECIVER BOARD

#include "prototype.h"

unsigned int MSG[4];

/* CAN TEST AT STARTING */
unsigned char can_test(void)
{

      while(!(RX_in_CAN1()==2));

     clear_lcd();
     lcd_str("IGNITION ON");
     delay(4000);
   if(RX_in_CAN1()==3)
    {
    clear_lcd();
    lcd_str("BRAKE TEST PASS");
    delay(3000);

    clear_lcd();
    lcd_str("SEAT BELT PASS");
    delay(3000);
    return 1;
    }

   else
    {
     lcd_cmd(0x80);
     delay(1000);
     lcd_str("Chk BELT & brk");

     delay(3000);
     return 0;
    }
}

void CAN_init(void)
{
VPBDIV = 0x02;   // 30MHZ

PINSEL1 |= (1<<22)|(1<<24)|(1<<26)|(1<<28)|(1<<18)|(1<<16)|(1<<14);//0x15454000;/*CAN1 intialization*/

C1MOD=1 << 0;       /*Reset CAN1 controller*/
    C1BTR=1<<20 | 1<<19 | 1<< 18 | 29; //0x001C001D;/*Set baud Rate for CAN*/
    C1MOD=0;        /*Enable CAN1 controller*/

}
/******************************************************/
unsigned int RX_in_CAN1(void)
{
while((C1SR&0X01));

  MSG[0]=C1RID;   //The 11-bit Identifier field of the current received message.
  MSG[1]=C1RDA;       // FIRST WORD OF DATA
  MSG[2]=C1RDB;    //SECOND WORD OF DATA
  MSG[3]=C1RFS;        // if bit10 is set, this msg was accepted in AF bypass mode
  C1CMR= (1 << 2);    // Release receive buffer
  return MSG[1];

}

CODE FOR PROTYPE

#include<lpc21xx.h>
void delay(int);
void lcd_init(void);
void lcd_cmd(char);
void lcd_data(char);
void lcd_str(char *);
void lcd_num(unsigned int);
void clear_lcd(void);

   #define RS (1<<10)
   #define RW (1<<12)
   #define EN (1<<13)
   #define DATA (0xff << 15)
   #define LCD (EN |RW |RS|DATA)

void CAN_init(void);
unsigned int RX_in_CAN1(void);
unsigned char can_test(void);

CODE FOR MAIN

#include "prototype.h"
unsigned char BYTE[9];

int main()
{
  unsigned char res;

lcd_init();
CAN_init();

  clear_lcd();
  lcd_str("CAN TEST CODE Rx");
  delay(2000);
  clear_lcd();
  //delay(1000);
  TEST:
  res = can_test();
  if (res!=1)
   goto TEST;
  delay(2000);
  while(1)
   {
    clear_lcd();
    lcd_str("   VEHICLE ON");
    delay(1000);
   }
}// end of main

CODE FOR TX BOARD

CHECK LCD FUNCTION IN AUTOMOTIVE CAN BLOG

CODE FOR TX CAN

#include "prototype.h"

unsigned int MSG[4];

/* CAN TEST AT STARTING */
void can_test(void)
{
  unsigned int a,b,key;

  test:
    lcd_str("TURN ON IGNITION");
  delay(2000);

  key = IOPIN1;
  key = (1<<25) & key;   //   port po.5 has to be grounded

  if(key)
  {
   clear_lcd();
   lcd_str("KEY PASS");
   delay(2000);

   TX_from_CAN2(2);

   up:
   a = IOPIN0;
   a = (0x00000010 & a);   //brake test PORT0 po.4

   b = IOPIN0;
   b = (0x00000040 & b);    //seat belt test PORT0 po.6

   if(a == 0 && b == 0)
   {
    TX_from_CAN2(3);

   }

   else //if key != 0 (ignition:p0.5 not grounded)
   {
    goto up;
   }

  }
    else //if key != 0 (ignition:p0.5 not grounded)
  {
   goto test;
  }
}

void CAN_init(void)
{
VPBDIV = 0x02; // 30MHZ

PINSEL1 |= (1<<22)|(1<<24)|(1<<26)|(1<<28)|(1<<18)|(1<<16)|(1<<14);//0x15454000;/*CAN1 intialization*/

   /*CAN2 intialization*/
    C2MOD=1<<0;        /*Reset CAN2 controller*/
    C2BTR= 1<<20 | 1<<19 | 1<< 18 | 29; //0x001C001D;/*Set baud Rate for CAN2*/
C2MOD=0;        /*Enable CAN2 controller*/
}
/******************************************************/

void TX_from_CAN2(unsigned int ch)
     {
while((C2SR&0X00000004)!=0X00000004);

  C2TFI1= (1 << 18);//0X00040000;(DLC)(16:19)send 4 data bytes in the next transmission
  C2TDA1=ch;     /*Transmit data bytes 1-4 (1)*/
  C2TID1=0X045;   // tx id
  C2CMR= (1 << 0) | (1 << 5); //0X00000021;select transmit buffer 1 and q the message for transmission
  while((C2GSR& 0X00000008)!=0X00000008); // Tx has completed Sucessfully
  clear_lcd();
  lcd_str("Tx successfull");
  delay(3000);
}

CODE FOR MAIN

#include "prototype.h"
unsigned char BYTE[9];
unsigned char flag;

int main()
{

lcd_init();
CAN_init();

  clear_lcd();
  lcd_str("CAN TEST CODE Tx***");
  delay(2000);
  can_test();

clear_lcd();
}// end of main

register information