lcd.rar_ok2440 lcd

#include "include.h" volatile U32 LCD_BUFFER[LCD_HEIGHT][LCD_WIDTH]; //定义显示缓存区 void delay(U32 t) //延时程序 { while(t--); } void Lcd_Init(void) //LCD初始化 { //配置LCD相关引脚 rGPCUP = 0xffffffff; rGPCCON = 0xaaaaaaaa; //配置为LCD接口 rGPDUP = 0xffffffff; rGPDCON = 0xaaaaaaaa; //配置为LCD接口 rGPGUP = rGPGUP|(1<<4); //GPG4上拉电阻无效 rGPGCON = rGPGCON|(3<<8); //设置GPG4为LCD_PWREN rGPGDAT = rGPGDAT|(1<<4) ; //GPG4置1 //配置LCD控制器 rLCDCON1=(CLKVAL_TFT<<8)|(MMODE<<7)|(PNRMODE_TFT<<5)|(BPPMODE_TFT<<1)|0; rLCDCON2=(VBPD<<24)|(LINEVAL<<14)|(VFPD<<6)|(VSPW<<0); rLCDCON3=(HBPD<<19)|(HOZVAL<<8)|(HFPD<<0); rLCDCON4=(HSPW<<0); //MMODE=0即MVAL不要配置 rLCDCON5 = (BPP24BL<<12)|(INVVCLK<<10)|(INVVLINE<<9)|(INVVFRAME<<8)|(INVVD<<7)|(INVVDEN<<6)|(INVPWREN<<5)|(PWREN<<3)|(BSWP<<1)|(HWSWP<<0); //配置LCD缓冲地址 rLCDSADDR1=(((U32)LCD_BUFFER>>22)<<21)|M5D((U32)LCD_BUFFER>>1); rLCDSADDR2=M5D( ((U32)LCD_BUFFER+(LCD_WIDTH*LCD_HEIGHT*4))>>1 ); rLCDSADDR3=LCD_WIDTH*32/16; } void Lcd_Clear(U32 a) //全屏填充特定颜色或清屏，颜色为a { U32 x,y ; for(y=0;y<LCD_HEIGHT;y++) { for(x=0;x<LCD_WIDTH;x++) { LCD_BUFFER[y][x] = a ; } } } //画实心圆，颜色为c。圆心在屏幕中心（160,120），半径为80个像素 void Draw_Circular(U32 c) { U32 x,y; U32 tempX,tempY; U32 radius = 80; U32 SquareOfR = radius*radius; for(y=0;y<LCD_HEIGHT;y++) { for(x=0;x<LCD_WIDTH;x++) { if(y<=120 && x<=160) { tempY=120-y; tempX=160-x; } else if(y<=120&& x>=160) { tempY=120-y; tempX=x-160; } else if(y>=120&& x<=160) { tempY=y-120; tempX=160-x; } else { tempY=y-120; tempX=x-160; } if ((tempY*tempY+tempX*tempX)<=SquareOfR) //X*X+Y*Y<=R*R LCD_BUFFER[y][x]=c; } } }