stm32 与液晶12864显示问题

只看该作者 · 2019-11-23 19:18

我用STM32外接ADC转换模块采集2个通道的模拟电压，转换成数字电压，通过计算Nor=（v1-v2）/(V1+V2),计算结果在液晶LCD12864显示其中V1， v2都是采样一千次后的平均值。V1 和V2能立马显示，但是计算出的Nor不能立马在在LCd显示，但是按一下复位键立马就显示出来了。
主要函数如下：
int main(void)
{
float voltage=0;
float voltage2=0;
int vol_int1=0;
int vol_int2=0;
int i=0;
float sun1=0,sun2=0,n=0;
//out1=26214;
  AD_config();
AD_INT();
  LED_config();
  INIT_PORT();
  lcd_clear();
  clrRAM_12864();
  lcd_string(0,0,&quot;vol1&quot;);  //&Ouml;&ETH;&Icirc;&Auml;&Ograve;&sup2;&iquest;&Eacute;&Ograve;&Ocirc;
  lcd_string(1,3,&quot;V&quot;);

  lcd_string(2,0,&quot;vol2&quot;);  //&Ouml;&ETH;&Icirc;&Auml;&Ograve;&sup2;&iquest;&Eacute;&Ograve;&Ocirc;
  lcd_string(3,3,&quot;V&quot;);

  lcd_string (0,4,&quot;Nor&quot;);

  while(1)
  {
sum1=0,av1=0,sum2=0,av2=0;
/***************&sup1;é&Ograve;&raquo;&Ouml;&micro;****************/
if(sun1+sun2!=0)
{
if(sun1>=sun2)
{
   n =(sun1-sun2)/(sun1+sun2);
   nor=floatToint(n);
   write_command(0x94);
   write_Data(0x30);
   write_Data('.');
   write_Data(0x30+(nor/100));
   write_Data(0x30+(nor%100/10));
   write_Data(0x30+(nor%100%10));

}
else
   {
   n =(sun2-sun1)/(sun1+sun2);
   nor=floatToint(n);
   write_command(0x94);
   write_Data('-');
   write_Data(0x30);
   write_Data('.');
   write_Data(0x30+(nor/100));
   write_Data(0x30+(nor%100/10));
   write_Data(0x30+(nor%100%10));
   }
}
/***************&Iacute;¨&micro;&Agrave;1*****************/
for(i=0;i<1000;i++)
{
ch_sel_1();
read_spi();
out1=dateout;
voltage=(float)(out1)*5/16384; //×&ordf;&raquo;&raquo;&sup3;&Eacute;&micro;&ccedil;&Ntilde;&sup1;&Ouml;&micro; &ETH;&iexcl;&Ecirc;&yacute;
vol_int1=floatToint(voltage); //±&pound;&Aacute;&ocirc;&Egrave;&yacute;&Icirc;&raquo;&ETH;&iexcl;&Ecirc;&yacute;
sum1=sum1+vol_int1;
sun1=sun1+voltage;

ch_sel_2();
read_spi();
out2=dateout;
voltage2=(float)(out2)*5/16384; //×&ordf;&raquo;&raquo;&sup3;&Eacute;&micro;&ccedil;&Ntilde;&sup1;&Ouml;&micro; &ETH;&iexcl;&Ecirc;&yacute;
vol_int2=floatToint(voltage2); //±&pound;&Aacute;&ocirc;&Egrave;&yacute;&Icirc;&raquo;&ETH;&iexcl;&Ecirc;&yacute;
sum2=sum2+vol_int2;
sun2=sun2+voltage2;
   }
   av1=sum1/1000;
write_command(0x90);
write_Data(0x30+av1/1000);
write_Data('.');
   write_Data(0x30+av1%1000/100);
write_Data(0x30+av1%1000%100/10);
write_Data(0x30+av1%1000%100%10);
/***************&Iacute;¨&micro;&Agrave;2****************/
av2=sum2/1000;
write_command(0x98);
write_Data(0x30+av2/1000);
write_Data('.');
write_Data(0x30+av2%1000/100);
write_Data(0x30+av2%1000%100/10);
write_Data(0x30+av2%1000%100%10);
  }
}
求各位大神帮帮我看看原因

stm32 与液晶12864显示问题

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