想更改时间，首先读取RTC目前值，然后关闭RTC中断，通过触屏进行设置，设置好后，打开RTC中断，设置值写入RTC寄存器，以上流程没有问题吧？
程序如下：
if(even==E_SETTIME)
{
tm = &systmtime;
nian=tm->tm_year;
yue=tm->tm_mon;
ri=tm->tm_mday;
shi=tm->tm_hour;
fen=tm->tm_min;
miao=tm->tm_sec;
even = E_NULL;
while(even !=E_SETTIME)
{
RTC_ITConfig(RTC_IT_SEC, DISABLE);
if(even==E_RIGHT)
{
wei=wei+1;
if(wei>5)
wei=0;
even = E_NULL;
}
else if(even==E_LEFT)
{
wei=wei-1;
if(wei<0)
wei=5;
even = E_NULL;
}
switch(wei)
{
case 0:
if(even==E_UP)
{
nian++;
even = E_NULL;
}
else if(even==E_DOWN)
{
nian--;
even = E_NULL;
}
LCD_ShowNum_8x16(158,304,nian,4,WHITE,RED);
LCD_ShowNum_8x16(198,304,yue,2,WHITE,BLACK);
LCD_ShowNum_8x16(222,304,ri,2,WHITE,BLACK);
LCD_ShowNum_8x16(166,288,shi,2,WHITE,BLACK);
LCD_ShowNum_8x16(190,288,fen,2,WHITE,BLACK);
LCD_ShowNum_8x16(214,288,miao,2,WHITE,BLACK);
break;
case 1:
if(even==E_UP)
{
yue++;
even = E_NULL;
}
else if(even==E_DOWN)
{
yue--;
even = E_NULL;
}
LCD_ShowNum_8x16(158,304,nian,4,WHITE,BLACK);
LCD_ShowNum_8x16(198,304,yue,2,WHITE,RED);
LCD_ShowNum_8x16(222,304,ri,2,WHITE,BLACK);
LCD_ShowNum_8x16(166,288,shi,2,WHITE,BLACK);
LCD_ShowNum_8x16(190,288,fen,2,WHITE,BLACK);
LCD_ShowNum_8x16(214,288,miao,2,WHITE,BLACK);
break;
case 2:
if(even==E_UP)
{
ri++;
even = E_NULL;
}
else if(even==E_DOWN)
{
ri--;
even = E_NULL;
}
LCD_ShowNum_8x16(158,304,nian,4,WHITE,BLACK);
LCD_ShowNum_8x16(198,304,yue,2,WHITE,BLACK);
LCD_ShowNum_8x16(222,304,ri,2,WHITE,RED);
LCD_ShowNum_8x16(166,288,shi,2,WHITE,BLACK);
LCD_ShowNum_8x16(190,288,fen,2,WHITE,BLACK);
LCD_ShowNum_8x16(214,288,miao,2,WHITE,BLACK);
break;
case 3:
if(even==E_UP)
{
shi++;
even = E_NULL;
}
else if(even==E_DOWN)
{
shi--;
even = E_NULL;
}
LCD_ShowNum_8x16(158,304,nian,4,WHITE,BLACK);
LCD_ShowNum_8x16(198,304,yue,2,WHITE,BLACK);
LCD_ShowNum_8x16(222,304,ri,2,WHITE,BLACK);
LCD_ShowNum_8x16(166,288,shi,2,WHITE,RED);
LCD_ShowNum_8x16(190,288,fen,2,WHITE,BLACK);
LCD_ShowNum_8x16(214,288,miao,2,WHITE,BLACK);
break;
case 4:
if(even==E_UP)
{
fen++;
even = E_NULL;
}
else if(even==E_DOWN)
{
fen--;
even = E_NULL;
}
LCD_ShowNum_8x16(158,304,nian,4,WHITE,BLACK);
LCD_ShowNum_8x16(198,304,yue,2,WHITE,BLACK);
LCD_ShowNum_8x16(222,304,ri,2,WHITE,BLACK);
LCD_ShowNum_8x16(166,288,shi,2,WHITE,BLACK);
LCD_ShowNum_8x16(190,288,fen,2,WHITE,RED);
LCD_ShowNum_8x16(214,288,miao,2,WHITE,BLACK);
break;
case 5:
if(even==E_UP)
{
miao++;
even = E_NULL;
}
else if(even==E_DOWN)
{
miao--;
even = E_NULL;
}
LCD_ShowNum_8x16(158,304,nian,4,WHITE,BLACK);
LCD_ShowNum_8x16(198,304,yue,2,WHITE,BLACK);
LCD_ShowNum_8x16(222,304,ri,2,WHITE,BLACK);
LCD_ShowNum_8x16(166,288,shi,2,WHITE,BLACK);
LCD_ShowNum_8x16(190,288,fen,2,WHITE,BLACK);
LCD_ShowNum_8x16(214,288,miao,2,WHITE,RED);
break;
default :break;
}
LCD_DisNum(158,250,nian,WHITE,RED);
printf(&quot;\n\r DAY: %d\n\r&quot;, yue);
RTC_ITConfig(RTC_IT_SEC, ENABLE);
tm->tm_year= nian;
tm->tm_mon= yue;
tm->tm_mday= ri;
tm->tm_hour= shi;
tm->tm_min= fen;
tm->tm_sec= miao;
RTC_WaitForLastTask(); //等待RTC完成当前任务，增减无影响
GregorianDay(tm); //计算公历，增减无影响
RTC_SetCounter(mktimev(tm)); //计算时间戳，写入寄存器，加上此段代码后，时间日期并不能写入，且带来无法退出设置的问题。
RTC_WaitForLastTask(); //增减无影响
}
even = E_NULL;
}
请注意看后面4行有注释的地方。
说明：触屏触发&quot;设置&quot;后，通过上下左右进行选择和增减时间，再次触摸“设置”后退出设置，写入时间。目前增加写入寄存器时间代码前，显示，数据增减，进入退出设置都正确，但增加写入寄存器时间后，无法写入时间，且无法选择、增减、退出等动作。请大家指点迷津。
谢谢！
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