写几个的时候就一直在闪

2万 · 2013-10-20 14:38

我这几天玩ILI9320的TFT，当我每次写一个字符或汉字的话就没事，可写几个的时候就一直在闪，很难看清写的东西。

2万 · 2013-10-20 14:40

怎么实现的啊

2万 · 2013-10-20 14:41

我写多个字符或汉字是调用写一个字符或汉字的函数。

2万 · 2013-10-20 14:43

代码看看吧

2万 · 2013-10-20 14:44

函数名称:LCD_DispOneMaxChar
功能://以16*24点阵显示一个字符
参数:chr: 要显示的字符
   xStart:  要显示字符的起始X坐标
   yStart:  要显示字符的起始Y坐标
   fColor:  字符前景色
   bColor:  字符背景色
返回值:无
*************************************************************/
void LCD_DispOneMaxChar(unsigned char chr,unsigned int xStart,unsigned int yStart,
unsigned long fColor,unsigned long bColor)
{
unsigned char i,j;
unsigned char nCols;
unsigned char nRows;
unsigned char nBytes;
unsigned int PixelRow;
unsigned int Mask;
unsigned long Word;
unsigned int *pFont;
unsigned int *pChar;
write_reg(0x03,0x0000); //Entry Mode Set.
// get pointer to the beginning of the selected font table
pFont = (unsigned int *)FONT16x24;

// get the nColumns, nRows and nBytes
nCols = *pFont;
nRows = *(pFont + 1);
nBytes = *(pFont + 2);

// get pointer to the first byte of the desired character
pChar = pFont + nBytes*(chr - 0x1F);

//define display window
Lcd_SetBox(xStart,yStart,nCols,nRows,0,0);

// loop on each row, working backwards from the top to the bottom
for (i = 0; i < nRows; i++)
{
// copy pixel row from font table and then increment row
PixelRow = *pChar++;

// loop on each pixel in the row (left to right)
// Note: we do one pixel each loop
Mask = 0x0001;
for (j = 0; j < nCols; j++)
{
// if pixel bit set, use foreground color; else use the background color
if ((PixelRow & Mask) == 0)
Word = bColor;
else
Word = fColor;
Mask = Mask << 1;
rw_data_prepare();
write_data(Word);

}
}
}
/*************************************************************
函数名称:LCD_DispMaxStr
功能:以16*24点阵显示字符串
参数:pStr:  字符串地址
xStart:  要显示字符串的起始X坐标
yStart:  要显示字符串的起始Y坐标
fColor:  字符前景色
bColor:  字符背景色
返回值:无
*************************************************************/
void LCD_DispMaxStr(unsigned char *pStr,unsigned int xStart,unsigned int yStart,unsigned long fColor,unsigned long bColor)
{
// loop until null-terminator is seen
while (*pStr != 0x00)
{
// draw the character
LCD_DispOneMaxChar(*pStr++,xStart,yStart,fColor,bColor);
// advance the X position
xStart += 16;
// bail out if X exceeds LCD_HEIGHT
if (xStart > LCD_HEIGHT)
break;
}
}