请帮我优化这段代码 sprintf(szVal, "%0.3f" , get_ActionDZInfo_val(UNIT_GAP_RT1064,gapid,DBData[i])); LCD_DisString((i%LISTOFFSET)+1, 19, szVal); if (DBData[i] >= RT1064_YS_GL1 && DBData[i] <= RT1064_YS_FBS_JY) LCD_DisString((i%9)+1, 25, (char *)"S"); else if ((DBData[i] >= RT1064_DZ_GL1 && DBData[i] <= RT1064_DZ_I02) || ((DBData[i] >= RT1064_DZ_PHASE_I && DBData[i] <= RT1064_DZ_I0DLT) && DBData[i] != RT1064_DZ_YL_HAR && DBData[i] != RT1064_DZ_LMJ) || DBData[i] == RT1064_DZ_SD || DBData[i] == RT1064_DZ_I0HJS || DBData[i] == RT1064_DZ_FC_CHZ || (DBData[i] >= RT1064_DZ_I03 && DBData[i] <= RT1064_DZ_FBS_I0)|| DBData[i] == RT1064_DZ_FBS_OL) { LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"A"); } else if (DBData[i] == RT1064_DZ_LMJ || DBData[i] == RT1064_DZ_JC || DBData[i] == RT1064_DZ_GYJC) { LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"°"); } else if (DBData[i] == RT1064_DZ_YL_HAR) LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"%"); else if (DBData[i] == RT1064_DZ_IDS ||DBData[i] == RT1064_DZ_OPENCS || (DBData[i] >= RT1064_DZ_I03 && DBData[i] <= RT1064_DZ_FBS_I0)) { LCD_DisString((i%LISTOFFSET)+1, 24, (char *)"次"); } else if (DBData[i] == RT1064_DZ_DP || DBData[i] == RT1064_DZ_GP) { LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"HZ"); } else LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"V"); if (isDraw == 1)len = LCD_BitNot(UNIT_PROTECT,UNIT_GAP_RT1064,gapid,DBData[i],i,bit);

根据您提供的代码，我发现该代码主要是对数组DBData进行操作，并且在LCD上显示相应的数据。在代码中，使用了多个if-else语句进行判断，并且在每个条件语句中都有一个LCD显示的操作。这种做法会导致代码的可读性和可维护性降低，同时也会影响代码的执行效率。

下面是我建议的代码优化方法：

1. 将if-else语句中的LCD显示操作提取出来，单独封装成一个函数，这样可以减少重复代码，提高代码可维护性。

2. 将条件语句中的数据范围提取出来，封装成一个数组，例如：

const int gl1 = RT1064_DZ_GL1;
const int i02 = RT1064_DZ_I02;
const int phase_i = RT1064_DZ_PHASE_I;
const int i0dlt = RT1064_DZ_I0DLT;
const int yl_har = RT1064_DZ_YL_HAR;
const int lmj = RT1064_DZ_LMJ;
const int opencs = RT1064_DZ_OPENCS;
const int ids = RT1064_DZ_IDS;
const int dp = RT1064_DZ_DP;
const int gp = RT1064_DZ_GP;
const int fc_chz = RT1064_DZ_FC_CHZ;
const int i03 = RT1064_DZ_I03;
const int fbs_i0 = RT1064_DZ_FBS_I0;
const int ys_gl1 = RT1064_YS_GL1;
const int ys_fbs_jy = RT1064_YS_FBS_JY;
const int dz_fbs_ol = RT1064_DZ_FBS_OL;

const int range1[] = {gl1, i02};
const int range2[] = {phase_i, i0dlt};
const int range3[] = {yl_har};
const int range4[] = {lmj, RT1064_DZ_JC, RT1064_DZ_GYJC};
const int range5[] = {opencs, i03, fbs_i0};
const int range6[] = {dp, gp};
const int range7[] = {fc_chz};
const int range8[] = {dz_fbs_ol};

这样可以减少if-else语句中的判断条件，提高代码执行效率。

3. 在LCD显示操作中，使用sprintf函数将浮点数转换成字符串，而不是直接使用浮点数进行显示，可以避免显示不准确的问题。

根据以上优化方法，下面是我优化后的代码：

void displayValue(double val, int i) {
    char szVal[10];
    sprintf(szVal, "%0.3f" , val);
    LCD_DisString((i%LISTOFFSET)+1, 19, szVal);

    int db = DBData[i];
    const int *pRange;

    if (db >= ys_gl1 && db <= ys_fbs_jy) {
        LCD_DisString((i%9)+1, 25, (char *)"S");
        pRange = range1;
    } else if ((db >= range2[0] && db <= range2[1]) || 
               ((db >= phase_i && db <= i0dlt) && db != yl_har && db != lmj) || 
               db == RT1064_DZ_SD || db == RT1064_DZ_I0HJS || 
               db == fc_chz || (db >= i03 && db <= fbs_i0)|| db == dz_fbs_ol) {
        LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"A");
        pRange = range2;
    } else if (db == lmj || db == RT1064_DZ_JC || db == RT1064_DZ_GYJC) {
        LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"°");
        pRange = range4;
    } else if (db == yl_har) {
        LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"%");
        pRange = range3;
    } else if (db == ids || db == opencs || (db >= i03 && db <= fbs_i0)) {
        LCD_DisString((i%LISTOFFSET)+1, 24, (char *)"次");
        pRange = range5;
    } else if (db == dp || db == gp) {
        LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"HZ");
        pRange = range6;
    } else if (db == RT1064_DZ_I0DLT) {
        LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"V");
        pRange = NULL;
    } else {
        LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"V");
        pRange = NULL;
    }

    if (pRange != NULL && db >= pRange[0] && db <= pRange[1]) {
        LCD_DisString((i%LISTOFFSET)+1, 25, (char *)"A");
    }

    if (isDraw == 1) {
        len = LCD_BitNot(UNIT_PROTECT,UNIT_GAP_RT1064,gapid,db,i,bit);
    }
}

希望这些优化方法能够对您有所帮助。如果您有其他问题，可以随时向我提问。