一、数码管扫描的原理
- ①人的眼睛中的画面在0.02S(50Hz)左右,光源的闪烁频率高于50-60赫兹时,人眼通常无法察觉到光的闪烁;
- ②通过控制LED的亮灭透过模具贴纸从而控制数字和图案的亮灭;
二、display.c的实现
1、void Display(void) 各模式界面定义数据
u8 CxSegData[]={
0,0,0,0};
void Display(void)
{
if(b_Display_Flag== 0) return;
b_Display_Flag=0;
switch(Mode)
{
case 0:
CxSegData[0]=0x00;
CxSegData[1]=0x00;
CxSegData[2]=0x00;
CxSegData[3]=0x00;
b_Fresh_Flag=1;
break;
case 1:
CxSegData[0]=0xff;
CxSegData[1]=0xff;
CxSegData[2]=0xff;
CxSegData[3]=0xff;
b_Fresh_Flag=1;
break;
case 2:
CxSegData[3]=Unb_Red;
CxSegData[3]=Unb_Inf;
CxSegData[3]=Unb_Twi;
b_Fresh_Flag=1;
break;
case 3:
CxSegData[3]=b_Red;
CxSegData[3]=b_Inf;
CxSegData[3]=b_Twi;
b_Fresh_Flag=1;
break;
case 4:
LcdDisplay_8bit(LzLcdNum1,LedNumCoding[