GCC中怎么把结构体数组放到FLASH里面

只看该作者 · 2007-2-8 12:37

在GCC中，我定义了一个结构体数组，想放到FLASH内，但编译后程序运行的时候出错，请大家帮忙看看。
typedef struct
{//温度传感器表格数据结构
    int   Temprature;
    unsigned int  Resistance;
}Struct_TempratureTable;

Struct_TempratureTable const TempratureTable[141]  PROGMEM  =
{
    {-400,65525},{-390,62555},{-380,58985},{-370,55648},{-360,52526},
    {-350,49603},{-340,46865},{-330,44299},{-320,41893},{-310,39636},
    {-300,37516},{-290,35525},{-280,33654},{-270,31895},{-260,30240},
    {-250,28683},{-240,27216},{-230,25835},{-220,24532},{-210,23304},
    {-200,22146},{-190,21052},{-180,20020},{-170,19045},{-160,18123},
    {-150,17252},{-140,16428},{-130,15649},{-120,14911},{-110,14212},
    {-100,13550},{-90,12923},{-80,12329},{-70,11765},{-60,11231},
    {-50,10723},{-40,10242},{-30,9785},{-20,9350},{-10,8938},
    {0,8545},{10,8172},{20,7818},{30,7480},{40,7159},
    {50,6854},{60,6563},{70,6286},{80,6021},{90,5770},
    {100,5530},{110,5301},{120,5083},{130,4875},{140,4677},
    {150,4487},{160,4306},{170,4133},{180,3968},{190,3811},
    {200,3660},{210,3516},{220,3378},{230,3247},{240,3121},
    {250,3000},{260,2886},{270,2776},{280,2672},{290,2571},
    {300,2476},{310,2384},{320,2296},{330,2211},{340,2130},
    {350,2053},{360,1979},{370,1908},{380,1839},{390,1774},
    {400,1711},{410,1651},{420,1593},{430,1537},{440,1484},
};
运算的程序是
int CalculateTemprature(unsigned int ResistanceValue)
{
    unsigned char i;
    int Temprature;
    for(i=0;i<141;i++)
    {
        if(ResistanceValue>=TempratureTable.Resistance)
        {
            break;
        }
    }

        Temprature=TempratureTable.Temprature;
        Temprature=Temprature
                    -(ResistanceValue-TempratureTable.Resistance)*10
                    /(TempratureTable[i-1].Resistance-TempratureTable.Resistance);

    return(Temprature);
}
程序运行的时候得出的温度是乱的，难道定义在FLASH里的数组不能直接用吗？或者说用的时候还要考到RAM中才能用吗？

只看该作者 · 2007-2-8 14:00

GCC中怎么把结构体数组放到FLASH里面

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问题已经解决，读FLASH里面数据的时候要用它库里封装好的函