xmodem.h

arm开发很好的例程

#ifndef __xmodem_h
#define __xmodem_h

//定义Xmoden控制字符 
#define XMODEM_NUL 0x00 
#define XMODEM_SOH 0x01 
#define XMODEM_STX 0x02 
#define XMODEM_EOT 0x04 
#define XMODEM_ACK 0x06 
#define XMODEM_NAK 0x15 
#define XMODEM_CAN 0x18 
#define XMODEM_EOF 0x1A 
#define XMODEM_RECIEVING_WAIT_CHAR 'C' 


UNS32 xmodem_down(UNS32 address);
UNS16 calcrc(UNS8 *ptr, S16 count);
UNS32 cal_sum(UNS8 *ptr,UNS32 size);

#endif //__xmodem_h