sprintf(szVal, "%0.3f" , val); LCD_DisString((i%9)+1, 19, szVal); Pro_szUnit(DBData[i],i); if (isDraw == 1) val = LCD_BitModify(val,draw); ikey = Lcd_Recvfun2(); switch(ikey) { case LCD_KEY_UP: bit = 0; if (not == 2) { if (draw > page + 1 && draw <= line) draw = draw - 1; } break; case LCD_KEY_DOWN: bit = 0; if (not == 2) { if(draw < i) if (draw < line) draw = draw + 1; } break; case LCD_KEY_ADD: break; case LCD_KEY_DECREASE: break; case LCD_KEY_Left: if (not == 1) { change = 0; if(page < 9) continue; if(page >= 9) { page = page - 9; line = line - 9; } } break; case LCD_KEY_RIGHT: if (not == 1) { change = 0; if(line >= num) continue; if(page < num) { page = page + 9; line = line + 9; } } break; case LCD_KEY_ENTER: not = 2; bit = 0; break; case LCD_KEY_CANCEL: change = 0; if(not > 0) --not; draw = 0; if (not == 0) return; break; default: break; } } 这段代码在死循环中运行，其中的LCD_BitModify函数也有死循环，怎么使它们互不干扰（不使用线程）

可以使用时间片轮转的方式来解决这个问题。在主循环中设置一个计时器，每隔一定时间就切换到另一个函数的执行。具体的实现方式可以使用一个标志变量来表示当前应该执行的函数，然后在计时器中切换标志变量的值。这样就可以让两个函数轮流执行，而不会互相干扰。当然，这个方法需要注意时间片的设置，以保证两个函数的执行时间不会过长，否则会影响系统的响应速度。

相关问题

优化这段代码 sprintf(szVal, "%0.3f" , get_ActionDZInfo_val(UNIT_GAP_RT1064,gapid,DBData[i])); LCD_DisString((i%9)+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%9)+1, 25, (char *)"A"); } else if (DBData[i] == RT1064_DZ_LMJ || DBData[i] == RT1064_DZ_JC || DBData[i] == RT1064_DZ_GYJC) { LCD_DisString((i%9)+1, 25, (char *)"°"); } else if (DBData[i] == RT1064_DZ_YL_HAR) LCD_DisString((i%9)+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%9)+1, 24, (char *)"次"); } else if (DBData[i] == RT1064_DZ_DP || DBData[i] == RT1064_DZ_GP) { LCD_DisString((i%9)+1, 25, (char *)"HZ"); } else LCD_DisString((i%9)+1, 25, (char *)"V"); if (not == 2) { if(draw == (i+1)) len = LCD_BitNot(UNIT_PROTECT,UNIT_GAP_RT1064,gapid,DBData[i],i,bit); }

可以尝试使用 switch-case 语句来优化这段代码，将每种情况分开处理，让代码更加清晰易懂。同时，可以考虑定义一些常量或枚举值来代表每种情况，避免在代码中出现过多的数字和字符串常量。例如：

switch (DBData[i]) {
    case RT1064_YS_GL1:
    case RT1064_YS_FBS_JY:
        LCD_DisString((i%9)+1, 25, (char *)"S");
        break;
    case RT1064_DZ_GL1:
    case RT1064_DZ_I02:
    case RT1064_DZ_SD:
    case RT1064_DZ_I0HJS:
    case RT1064_DZ_FC_CHZ:
    case RT1064_DZ_I03:
    case RT1064_DZ_FBS_I0:
    case RT1064_DZ_FBS_OL:
    case RT1064_DZ_PHASE_I:
    case RT1064_DZ_I0DLT:
        if (DBData[i] != RT1064_DZ_YL_HAR && DBData[i] != RT1064_DZ_LMJ) {
            LCD_DisString((i%9)+1, 25, (char *)"A");
        }
        break;
    case RT1064_DZ_LMJ:
    case RT1064_DZ_JC:
    case RT1064_DZ_GYJC:
        LCD_DisString((i%9)+1, 25, (char *)"°");
        break;
    case RT1064_DZ_YL_HAR:
        LCD_DisString((i%9)+1, 25, (char *)"%");
        break;
    case RT1064_DZ_IDS:
    case RT1064_DZ_OPENCS:
        if (DBData[i] >= RT1064_DZ_I03 && DBData[i] <= RT1064_DZ_FBS_I0) {
            LCD_DisString((i%9)+1, 24, (char *)"次");
        }
        break;
    case RT1064_DZ_DP:
    case RT1064_DZ_GP:
        LCD_DisString((i%9)+1, 25, (char *)"HZ");
        break;
    default:
        LCD_DisString((i%9)+1, 25, (char *)"V");
        break;
}

if (not == 2 && draw == (i+1)) {
    len = LCD_BitNot(UNIT_PROTECT, UNIT_GAP_RT1064, gapid, DBData[i], i, bit);
}

另外，可以考虑将相同的代码逻辑提取出来，避免重复的代码出现。例如，多个情况下都需要将浮点数转换成字符串并输出，可以将这部分代码提取出来，避免重复编写：

char szVal[16];
sprintf(szVal, "%0.3f", get_ActionDZInfo_val(UNIT_GAP_RT1064, gapid, DBData[i]));
LCD_DisString((i%9)+1, 19, szVal);

优化这段代码 if( DBData[i] >= RT1064KZZ_GL1_ALM && DBData[i] <= RT1064KZZ_KZHL && DBData[i] != RT1064KZZ_MODE && DBData[i] != RT1064KZZ_UAB_CH && DBData[i] != RT1064KZZ_UBC_CH && DBData[i] != RT1064KZZ_FBS && DBData[i] != RT1064KZZ_FBS_MODE) { (isDraw ? LCD_DisString_Not((i%LISTOFFSET)+1, 20,(char *)gcszOnOff[(int)val]) : LCD_DisString((i%LISTOFFSET)+1, 20,(char *)gcszOnOff[(int)val]) ); } else if(DBData[i] == RT1064KZZ_MODE) { (isDraw ? LCD_DisString_Not((i%LISTOFFSET)+1, 20,(char *)ModeName[(int)val]) : LCD_DisString((i%LISTOFFSET)+1, 20,(char *)ModeName[(int)val]) ); } else if (DBData[i] == RT1064KZZ_FBS || DBData[i] == RT1064KZZ_FBS_MODE ) { (isDraw ? LCD_DisString_Not((i%LISTOFFSET)+1, 20,(char *)FBS_NAME[(int)val]) : LCD_DisString((i%LISTOFFSET)+1, 20,(char *)FBS_NAME[(int)val]) ); } else if(DBData[i] == RT1064KZZ_UAB_CH || DBData[i] == RT1064KZZ_UBC_CH || DBData[i] == RT1064_DZ_CHZCS) { sprintf(szVal, "%0.f" , val); LCD_DisString((i%LISTOFFSET)+1, 19 , szVal); if(DBData[i] == RT1064_DZ_CHZCS) LCD_DisString((i%LISTOFFSET)+1, 24, (char *)"次"); if (isDraw == 1) len = LCD_BitNot(UNIT_PROTECT,UNIT_GAP_RT1064,gapid,DBData[i],i,bit); } else { 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); }

这段代码可以优化的地方比较多，建议按照以下几个方面进行调整：

1. 将重复的代码片段提取出来，封装成函数，提高代码复用性和可读性；
2. 尽可能地使用 switch-case 语句替换 if-else 语句，提高代码执行效率；
3. 对于需要频繁操作的字符串拼接操作，可以使用 sprintf 函数来代替，提高代码执行效率。

下面是一个可能的优化版本：

void draw_LCD(int i, int isDraw, float val, int gapid, int bit) {
    char szVal[10];
    switch (DBData[i]) {
        case RT1064KZZ_MODE:
            if (isDraw) {
                LCD_DisString_Not((i % LISTOFFSET) + 1, 20, (char *)ModeName[(int)val]);
            } else {
                LCD_DisString((i % LISTOFFSET) + 1, 20, (char *)ModeName[(int)val]);
            }
            break;
        case RT1064KZZ_FBS:
        case RT1064KZZ_FBS_MODE:
            if (isDraw) {
                LCD_DisString_Not((i % LISTOFFSET) + 1, 20, (char *)FBS_NAME[(int)val]);
            } else {
                LCD_DisString((i % LISTOFFSET) + 1, 20, (char *)FBS_NAME[(int)val]);
            }
            break;
        case RT1064KZZ_UAB_CH:
        case RT1064KZZ_UBC_CH:
        case RT1064_DZ_CHZCS:
            sprintf(szVal, "%0.f", val);
            LCD_DisString((i % LISTOFFSET) + 1, 19, szVal);
            if (DBData[i] == RT1064_DZ_CHZCS) {
                LCD_DisString((i % LISTOFFSET) + 1, 24, (char *)"次");
            }
            if (isDraw) {
                LCD_BitNot(UNIT_PROTECT, UNIT_GAP_RT1064, gapid, DBData[i], i, bit);
            }
            break;
        default:
            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) {
                LCD_BitNot(UNIT_PROTECT, UNIT_GAP_RT1064, gapid, DBData[i], i, bit);
            }
            break;
    }
}

调用方式如下：

for (int i = 0; i < DBData.size(); i++) {
    if (DBData[i] >= RT1064KZZ_GL1_ALM && DBData[i] <= RT1064KZZ_KZHL && DBData[i] != RT1064KZZ_MODE &&
        DBData[i] != RT1064KZZ_UAB_CH && DBData[i] != RT1064KZZ_UBC_CH && DBData[i] != RT1064KZZ_FBS &&
        DBData[i] != RT1064KZZ_FBS_MODE) {
        draw_LCD(i, isDraw, val, gapid, bit);
    } else {
        draw_LCD(i, isDraw, val, gapid, bit);
    }
}