xmodem.h

一个比较好的三星s3c4510的启动代码

#ifndef __XMODEM_H__
#define __XMODEM_H__

#define SOH 0x01
#define STX 0x02
#define EOT 0x04
#define ACK 0x06
#define BS  0x08
#define NAK 0x15
#define CAN 0x18
#define SUB 0x1a

#define BUF_SIZE	(128)

#define CRC16       (0x8005)
#define CRC_CCITT   (0x1021)

#define TIMEOUT   	(30000)
#define MAXERRORS 	(10)

struct xmodemPacket 
{
    char    blockBegin;                
    char    blockNo;	
    char 	blockNoOnesCompl;		         
           
    char    buffer[BUF_SIZE];    
    char	crcHi;
    char    crcLo;             
}; 

#ifdef __cplusplus
extern "C" {
#endif

void	WriteByte(char cc);
int		ReadByteWithTimeout(void);
int 	XModemReceive(char *bufBase, int bufLen);
void 	sendPacket(char *ptr, int ptrsize);
int		calcrc(char *ptr, int count, int mask);
int 	XModemSend(char *bufBase, int bufLen);
int		testcrc(char *ptr, int count);

#ifdef __cplusplus
}
#endif

#endif /*__XMODEM_H__*/