优化这段代码 switch (i) { case COM_COM_PCL: LCD_DisString((i%9)+1, 15, (char *)gcszLcdComPcl[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_BR: LCD_DisString((i%9)+1, 15, (char *)gcszLcdComBaud[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_PR: LCD_DisString((i%9)+1, 15, (char *)gcszComParity[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_DIR: LCD_DisString((i%9)+1, 15, (char *)gcszStateName1[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_YXM: LCD_DisString((i%9)+1, 15, (char *)gcszPoint[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_YKM: LCD_DisString((i%9)+1, 15, (char *)gcszPoint[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_YCM: LCD_DisString((i%9)+1, 15, (char *)gcszData[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_JM: LCD_DisString((i%9)+1, 15, (char *)gcszLcdJmMode[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_AREA: LCD_DisString((i%9)+1, 15, (char *)gcszLcdAreaMode[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_SYNCTM: LCD_DisString((i%9)+1, 15, (char *)gcszLcdSynctmMode[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; case COM_COM_RS485: LCD_DisString((i%9)+1, 15, (char *)gcszLcdRSMode[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]); break; default: break; }

可以考虑使用一个数组来存储每个case对应的要执行的函数，然后利用i作为索引调用对应的函数，避免了大量的重复代码，示例如下：

void (*displayFunc[])(int, int, char*) = {
    NULL,
    [COM_COM_PCL] = LCD_DisString,
    [COM_COM_BR] = LCD_DisString,
    [COM_COM_PR] = LCD_DisString,
    [COM_COM_DIR] = LCD_DisString,
    [COM_COM_YXM] = LCD_DisString,
    [COM_COM_YKM] = LCD_DisString,
    [COM_COM_YCM] = LCD_DisString,
    [COM_COM_JM] = LCD_DisString,
    [COM_COM_AREA] = LCD_DisString,
    [COM_COM_SYNCTM] = LCD_DisString,
    [COM_COM_RS485] = LCD_DisString,
};

void display(int i, int col, char* str) {
    if (displayFunc[i] != NULL) {
        displayFunc[i](i%9+1, col, str);
    }
}

然后在原来的代码中，可以直接调用`display()`函数，示例如下：

display(i, 15, gcszLcdComPcl[(int)gRunPara.COMMS_SerialInfo[serialid][i].val]);

这样可以让代码更加简洁易读，且方便后续的维护和扩展。