messaging.h

whereavr是一个用ATMEL M8实现的AX.25精简协议栈,搜了很多资料,这个是对学习自动位置报告系统最好的实例

/*******************************************************************************
File:			Messaging.c

				Messaging definitions/declarations for the atmega8.

Version:		1.02

*******************************************************************************/

unsigned char	Time_Temp[7]; 	// Temp variable here so main can read seconds

extern void MsgInit (void);
extern void MsgPrepare (void);
extern void MsgSendPos (void);
extern void MsgSendTelem (void);
extern void MsgSendAck (unsigned char *rxbytes, unsigned char msg_start);
extern void MsgHandler (unsigned char newchar);