利用初始化設置中的void LCD_displayScreen來實現按一鍵盤全屏顯示某種顏色：

while(1)

{

unsigned char color;

color = Uart_Getch();

switch(color)

{

case 'b':

case 'B':

LCD_displayScreen(0,0,0xff);

Uart_Printf("The color is Blue! n");

break;

case 'r':

case 'R':

LCD_displayScreen(0xff,0,0);
Uart_Printf("The color is Red! n");

break;

case 'g':

case 'G':

LCD_displayScreen(0,0xff,0);

Uart_Printf("The color is Green! n");

break;

case 'y':

case 'Y':

LCD_displayScreen(0xff,0xff,0);

Uart_Printf("The color is Yellow! n");
break;

case 'w':

case 'W':

LCD_displayScreen(0xff,0xff,0xff);

Uart_Printf("The color is White! n");

break;

default:
LCD_displayScreen(0,0,0); //BLack

Uart_Printf("Press Wrong Key! B:Blue R:Red Y:Yellow G:Green W:white n");

}

}

以上代碼稍微修改就成了按按鍵顯示任何圖片。

/**************************************************************

在LCD屏幕上指定坐標點畫一個指定大小的圖片

**************************************************************/

void Paint_Bmp(int x0,int y0,int h,int l,unsigned char bmp[])

{
注：x0為起始X坐標，y0為起始y坐標，h為終止X坐標，l為終止Y坐標
bmp[]數組為需要顯示的bmp格式，大小為320*240的數據，總的480個8位數據

int x,y;

U32 c;

int p = 0;

for( y = y0 ; y < l ; y++ ) //y<=320
{
for( x = x0 ; x < h ; x++ )

{

c = bmp[p+1] | (bmp[p]<<8) ;

if ( ( (x0+x) < SCR_XSIZE_TFT) && ( (y0+y) < SCR_YSIZE_TFT) )

LCD_BUFFER[y0+y][x0+x] = c ;

p = p + 2 ; // 480/2=240
}
}

}
只需在開頭代碼中各case語句下的LCD_displayScreen(0,0,0xff);改成：
LCD_displayScreen(0,0,0); //清屏
Paint_Bmp(0,0,320,240,picture1_320_240); //從[0,0]到[320,240]處填充picture1_320_240