//---------------- 网络命令包结构------------------------
typedef struct _PACKAGE
{
    unsigned char STARTCODE[2];  // 2 个字节的起始码
    unsigned char cmd;           // 命令码
    unsigned char seq;           // 顺序号
    unsigned char len[2];        // 长度, 为low, 1 为 high
    unsigned char data[520];     // 数据
    unsigned char bcc;           // 校验位
}PACKAGE, *PPACKAGE;

APP_DLL int WINAPI BeginMultiInv(HANDLE_FUN f);
/*---------------------------------
 * return:
 *      R_OK
 *      R_FAIL
 **********************************/
typedef void (CALLBACK* HANDLE_FUN)(unsigned char cmdID, void* pData, int length);
APP_DLL int WINAPI StopInv();

#define UHF_INV_MULTIPLY_BEGIN (Ox2A)
#define UHF_INV_MULTIPLY_END (0x2B)