receiver.h

485总线是通过单片机通过串口与上位机通信的总线

#ifndef __Receiver
#define __Receiver

extern char aRxBuff[];
extern char aTxBuff[];
extern unsigned char NRxBuff;
extern unsigned char NTxBuff;
extern unsigned char NTxd;
extern unsigned char StBao;
extern int nLastError;

void Cancel(void);	
unsigned int cal_crc(unsigned char *pbuffer,unsigned char n_byte);
unsigned char AsciiToHex(char c);
unsigned char PackByte(char* p);
unsigned int PackWord(char* p);
unsigned long PackDword(char* p);
void ReceiverData(unsigned char sq0);
void SendCommand(const char *lpszFormat, ...);
void HandleCommand();

#define SetLastError(e)		nLastError=(e)					// 设置错误
#define GetLastError()		nLastError						// 返回错误
#define FRAME_CRC			(&(aRxBuff)[NRxBuff-5])			// 返回CRC起始地址
#define FRAME_END()			(aRxBuff)[NRxBuff-5] = '\0'		// 以'\0'结束帧
#define FRAME_DATA			(&(aRxBuff)[3])					// 返回帧数据指针
#define FRAME_CMD			((aRxBuff)[2])					// 返回帧命令字符
#define FRAME_RESET()		{StBao=0; NRxBuff=0;}			// 重置接收标志
#define FRAME_OK()			(StBao)							// 返回接收包状态, 如果完成接收为非0值

#define SMCLK		8000000L		// SMCLK
#define BAUDRATE0	57600L			// 与PC机通讯的波特率
#define BAUDRATE1	115200L			// 与子机通讯波特率

#define GetVersion()	"1.0.0000"		// 仪器软件版本

#define TRY(expression)		{unsigned char __i; for(__i=0; __i<10; __i++){if(expression)break;}}

//-------------------------------------------------------------------------------------------------
// 公共错误代码
//-------------------------------------------------------------------------------------------------
#define E_BUSY				0x0001	// 仪器忙, 此时只回应一些状态查询指令
#define E_IDLE				0x0000	// 仪器空闲

#endif