crc.h

里面给出了ATmega103单片机编程的C语言实例程序

/* ATmega103 crc.h file 

   Author : Robert Stuart 
   Company : PDL Industries Ltd 
   Date of Creation : 3 November 1999
*/

/* includes */
#include <iom103.h>
#include "logic.h"
#include "fault.h"

/* defines */
#define START_PROGRAM_MEMORY_ADDRESS 	0x0000
#define END_PROGRAM_MEMORY_ADDRESS 	0xFFFD
#define CRC_16_MASK 		0xA001
#define CRC_DIVISOR 		0x8000

/* External Variables */
extern unsigned int CRC16;
extern char SystemStatus;

/* Local Variables */
static unsigned int ProgramMemory;