db_sm.c

在ARM7和UC/OSII的平台上实现了GPS自动报站的功能,涉及GPS模块LEA_4S的驱动,位置速寻算法,语音芯片ISD4004的录放音驱动,LED页面管理等等.从启动代码到操作系统的移植以及到业

/****************************************************************
**                                                              *
**  FILE         :  DB_SM.C                                     *
**  COPYRIGHT    :  (c) 2001 .Xiamen Yaxon NetWork CO.LTD       *
**                                                              *
**                                                              *
**  By : CCH 2002.1.15                                          *
****************************************************************/
#include "includes.h"
#include "tools.h"
#include "database.h"
#include "record.h"
#include "db_sm.h"

#if EN_HANDSET > 0



/*
********************************************************************************
*                  DEFINE RECORD FIELD
********************************************************************************
*/
#define FIELD_READFLAG                      0
#define FIELD_DATE                          1
#define FIELD_TIME                          2
#define FIELD_TEL                           3
#define FIELD_DATA                          4


/*
********************************************************************************
*                  DEFINE DB_SM FIELDS
********************************************************************************
*/
static FIELD_STRUCT fields[] = { {FIELD_FIXED,       1},                            /* field: unread flag */
                                 {FIELD_FIXED,       SMREC_SIZE_DATE},              /* field: date */
                                 {FIELD_FIXED,       SMREC_SIZE_TIME},              /* field: time */
                                 {0,                 SMREC_SIZE_TEL},               /* field: tel */
                                 {0,                 SMREC_SIZE_DATA}               /* field: data */
                               };

static SMREC_STRUCT SM_test;

void InitDB_SM(void)
{
    SM_test = SM_test;
    if (!DB_IsValid(DB_SM)) {
        DB_Init(DB_SM, FALSE, sizeof(fields)/sizeof(FIELD_STRUCT), fields, MAX_SMREC, 0, 0);
    }
}

INT8U GetSMRecTel(INT16U numrec, INT8U *ptr)
{
    return DB_GetRecField(DB_SM, numrec, FIELD_TEL, ptr);
}

INT16U GetSMRec(INT16U numrec, SMREC_STRUCT *ptr)
{
    return DB_GetRec(DB_SM, numrec, (INT8U *)ptr);
}

void AddSMRec(SMREC_STRUCT *smrec)
{
    smrec->unread = TRUE;
    if (!DB_AddRec(DB_SM, TRUE, (INT8U *)smrec)) DB_Del(DB_SM);
}

void DelSMRec(INT16U numrec)
{
    DB_DelRec(DB_SM, numrec);
}

void DelAllSMRec(void)
{
    DB_Init(DB_SM, FALSE, sizeof(fields)/sizeof(FIELD_STRUCT), fields, MAX_SMREC, 0, 0);
}

INT16U GetSMRecItem(void)
{
    return DB_GetItem(DB_SM);
}

BOOLEAN HaveUnReadSMRec(void)
{
    BOOLEAN refflag;
    
    refflag = TRUE;
    if (DB_FindRec(DB_SM, 0, FIELD_READFLAG, 1, (INT8U *)&refflag) == -1) return FALSE;
    else return TRUE;
}

BOOLEAN SMRecUnRead(INT16U numrec)
{
    BOOLEAN unread;
    
    if (DB_GetRecField(DB_SM, numrec, FIELD_READFLAG, (INT8U *)&unread) == 0) 
        return FALSE;
    else 
        return unread;
}

void ClearSMRecUnReadFlag(INT16U numrec)
{
    BOOLEAN unread;
    
    DB_GetRecField(DB_SM, numrec, FIELD_READFLAG, (INT8U *)&unread);
    if (unread) {
        unread = FALSE;
        DB_ModifyRecField(DB_SM, numrec, FIELD_READFLAG, 0, (INT8U *)&unread);
    }
}
#endif