comm.h

矿工定位系统单端

/*************************************************************************
/*                                                                       *   
/*  file : comm.h           											 *
/*																	     *
/************************************************************************/

// Serial Protocol

#define SOH                     0x01
                                        // Start of header
#define STX                     0x02	// Start of text 起始字
                                        
#define ETX                     0x03	// End of text 结束字
                                        
#define ENQ                     0x05	// Enquire
                                        
#define ACK                     0x06	// Acknowledge
                                        
#define DLE                     0x10	// Data link escape  转移字
                                        
#define NAK                     0x15	// Not acknowledge  不可识别
                                        
#define TRUE                     1
#define FALSE                    0

// Receive States

#define RECV_STX                0
#define RECV_DATA_DLE_ETX       1
#define RECV_ETX                2
#define RECV_DLE                3
#define RECV_DLE_OR_NAK         4
#define SEND_STX                5
#define RECV_ADDR0              6
#define RECV_ADDR1              7
#define RECV_ADDR2              8
#define RECV_ADDR3              9

// Serial Buffer

#define HEADER                  3

#define MAXDATA                 30
#define SUM_CHECK			    1

#define SERBUFLEN               HEADER + MAXDATA + SUM_CHECK + 1


#define T_533_ms                14

/********************************************/
sbit En485=P3^4;
bit  LED_RED ;
bit  LED_GREEN ;


#define SEND	               1
#define RECV                   0

/*************************** function ***********************/
void init_com(void);
void isr_timer0(void);
void isr_UART(void);
void START_T0(unsigned char x);
void CALL_isr_T0(void);
void cmd_execution(void);
/***************************** Global Variables ********************/
volatile unsigned char xdata SerBuffer[SERBUFLEN];    // SERBUFLEN = 35
unsigned char data ErrorCount ,Timer0Cnt; 
unsigned char data  RecvState;
volatile bit        DataDleReceived;
unsigned char data  Index;

volatile bit        Cmdok;
volatile bit        SendOk;
volatile bit        SendReady;
volatile bit        RecvReady;