profdrv.h.bak

自己编的用于工业触摸屏通讯的MODBUS RTU SLAVE 协议源代码

#define NO_ERR               0
#define ILLEGAL_FUNCTION     1
#define ILLEGAL_DATA_ADDRESS 2
#define ILLEGAL_DATA_VALUE   3
#define SLAVE_DEVICE_FAILURE 4
#define ACKNOWLEDGE          5
#define SLAVE_DEVICE_BUSY    6
#define NEGATIVE_ACKNOWLEDGE 7
#define MEMORY_PARITY_ERROR  8

#define WRITE_WORD           10
#define READ_WORD            11
#define WRITE_BIT            12
#define READ_BIT             13
#define CMD_WAIT             14

#define FLASH_ON             1             //数据已刷新
#define FLASH_OFF            0             //数据未刷新
//寄存器数据结构
struct MDS_WORD_STRUCT {
    int flag;
    unsigned short wreg;	
	  unsigned short rreg;
};
//位数据结构
struct MDS_BIT_STRUCT {
    int flag;
    unsigned char wcoil;	
	  unsigned char rcoil;
};
//将触摸屏通讯参数设置为：8位数据位＋1位停止位，无校验位，通讯速率：9600或19200
//功能：打开并初始化与proface通讯,本机为slave
//参数：unsigned char myaddr:本机地址
//      int comport:串口号，设置1或2
//      int baud:通讯波特率，设置9600或19200    
int MDS_Open(unsigned char myaddr, int comport, int baud);

//功能：关闭与proface的通讯
void MDS_Close();

//设置寄存器数据存储区
void MDS_SetRegisterBuf(struct MDS_WORD_STRUCT *prbuf, unsigned short num);
//设置线圈存储区
void MDS_SetCoilBuf(struct MDS_BIT_STRUCT *pcbuf, unsigned short num);
//检查指令
int MDS_CheckCommand(unsigned short *paddr, unsigned short *pnum);