lcd640.c

来自「博创2410的实验代码」· C语言 代码 · 共 116 行

#include <stdarg.h>
#include <stdio.h>
#include "inc/lcd320.h"
#include "inc/macro.h"
#include "inc/reg2410.h"

#define LCDCON1_CLKVAL		(1<<8)
#define LCDCON1_MMODE		(0<<7)
#define LCDCON1_PNRMODE	(0x3<<5)    //TFT LCD 
#define LCDCON1_BPPMODE		(0xc<<1)//16位TFT模式
#define LCDCON1_ENVID		(1)

#define LCDCON2_VBPD 32//32
#define LCDCON2_LINEVAL 479
#define LCDCON2_VFPD 9//9
#define LCDCON2_VSPW 1//
#define LCDCON3_HBPD 47//49
#define LCDCON3_HOZVAL 639
#define LCDCON3_HFPD 15//14
#define LCDCON4_HSPW 95//95
#define LCDCON5_FRM565 1//
#define LCDCON5_INVVCLK 0
#define LCDCON5_INVVLINE 1
#define LCDCON5_INVVFRAME 1
#define LCDCON5_INVVD 0
#define LCDCON5_INVVDEN 0
#define LCDCON5_INVPWREN 0
#define LCDCON5_INVLEND 0
#define LCDCON5_PWREN 1
#define LCDCON5_ENLEND 0
#define LCDCON5_BSWP 0
#define LCDCON5_HWSWP 1
#define BPP24BL 0
#define TPALEN 1
#define LPC_EN 1
#define FIWSEL 0
#define INT_FrSyn 1
#define INT_FiCnt 1
#define MVAL 13
U16* pLCDBuffer16I1=(U16*)0x32000000;
U16* pLCDBuffer16I2=(U16*)0x32096000;
U32 LCDBufferII2[LCDHEIGHT][LCDWIDTH];
U16 LCDBufferII1[307200];
/*LCD显示初始化设置函数*/
void LCD_Init()
{
	U32 i;
	U32 LCDBASEU,LCDBASEL,LCDBANK;
/*以下四条语句设置GPGC，GPGD端口为LCD控制端口*/
    rGPCUP=0xffffffff; // Disable Pull-up register
    rGPCCON=0xaaaaaaaa; //Initialize VD[7:0],LCDVF[2:0],VM,VFRAME,VLINE,VCLK,LEND 
    rGPDUP=0xffffffff; // Disable Pull-up register
    rGPDCON=0xaaaaaaaa; //Initialize VD[23:8]
    // TFT: VCLK = HCLK / [(CLKVAL+1) * 2] ( CLKVAL>=0 )
    rLCDCON1=0|LCDCON1_BPPMODE|LCDCON1_PNRMODE|LCDCON1_MMODE|LCDCON1_CLKVAL;// LCD控制寄存器设置，参见参数宏定义和手册P397-P400 
	    // disable   LINEVAL=hight-1=480-1=479
	rLCDCON2=(LCDCON2_VBPD<<24)|(LCDCON2_LINEVAL<<14)|(LCDCON2_VFPD<<6)|LCDCON2_VSPW;
	    //320x240LCD  LINEBLANK=15 (without any calculation) 
	rLCDCON3=(LCDCON3_HBPD<<19)|(LCDCON3_HOZVAL<<8)|LCDCON3_HFPD;//HOZVAL=width-1=640-1=639
    //MVAL对TFT无效
    rLCDCON4=LCDCON4_HSPW|(MVAL<<8);
    //设定24bpp显示模式时，视频资料在显示缓冲区中的排列顺序（即低位有效还是高位有效）。对于16bpp的64K色显示模式，该设置位无意义。
    //CPU的LCD控制器输出的时序默认是正脉冲，而LCD需要VSYNC（VFRAME）、VLINE（HSYNC）均为负脉冲，因此 INVLINE 和 INVFRAME 必须设为"1"，即选择反相输出。
    //PWREN 为LCD电源使能控制。ENLEND 对普通的TFT屏无效，可以不考虑。

	rLCDCON5=(BPP24BL<<12)|(LCDCON5_FRM565<<11)|(LCDCON5_INVVCLK<<10)|(LCDCON5_INVVLINE<<9)|(LCDCON5_INVVFRAME<<8)|(LCDCON5_INVVD<<7)|\
		     (LCDCON5_INVVDEN<<6)|(LCDCON5_INVPWREN<<5)|(LCDCON5_INVLEND<<4)|(LCDCON5_PWREN<<3)|(LCDCON5_ENLEND<<2)|(LCDCON5_BSWP<<1)|LCDCON5_HWSWP;
	
	LCDBANK=0x32000000>>22;//显示缓冲区地址
	LCDBASEU=0x0;	  
	LCDBASEL=LCDBASEU+(480)*640;
	//rLCDADDR1=0x33000000>>1;
	//These bits of LCDBANK indicate A[30:22] of the bank location for the video buffer in the system memory.
	rLCDADDR1= (LCDBANK<<21)|LCDBASEU;    //设置LCDADDR1寄存器，参见手册P403
    //LCDBASEL = ((the fame end address) >>1) + 1= LCDBASEU +(PAGEWIDTH+OFFSIZE)x(LINEVAL+1)
	rLCDADDR2=LCDBASEL;	                  //设置LCDBASEL，参见手册有关说明
	rLCDADDR3= (640)|(0<<11);             //设置显示的宽度和偏移量，参见手册有关说明
	rLCDINTMSK=(INT_FrSyn<<1)|INT_FiCnt;//|(FIWSEL<<2);设置中断屏蔽
	rLCDLPCSEL=0;                         //LPC3600，显示伴侣设置，未使用
	rTPAL=(0<<24);	                      //调色板设置，参见手册P407
	for(i=0;i<640*480;i++)
		//*(pLCDBuffer161+i)=0xffff;       
		*(pLCDBuffer16I1+i)=0x0;		  //清屏 			
	//hudelay(5000);	
    rLCDCON1+=LCDCON1_ENVID;	          //打开LCD
  
}
/*屏幕刷新函数*/
void LCD_Refresh()
{
	int i,j;
	U32 lcddata;
	U16 pixcolor;	//一个像素点的颜色	
	U8* pbuf=(U8*)LCDBufferII2[0];
	U32 LCDBASEU,LCDBASEL,LCDBANK;
	for(i=0;i<LCDWIDTH*LCDHEIGHT;i++){	
			pixcolor=((pbuf[0]&0xf8)<<11)|((pbuf[1]&0xfc)<<6)|(pbuf[2]&0xf8);	//变换RGB		
			pbuf+=4;	                                                        //下一象素  
		    //LCDBufferII1[i]=pixcolor;
		    *(pLCDBuffer16I2+i)=pixcolor;                                       //数据送至显示缓冲区      
	}
	
	//for(i=0;i<LCDWIDTH*LCDHEIGHT;i++)
	//*(pLCDBuffer16I2+i)=LCDBufferII1[i];
	
	LCDBANK=0x32096000>>22;                //重新设置显示缓冲区地址，下面各值定义与上类似
	LCDBASEU=(0x32096000<<9)>>10;	  
	LCDBASEL=LCDBASEU+(480)*640;
	//rLCDADDR1=0x33000000>>1;
	rLCDADDR1= (LCDBANK<<21)|LCDBASEU;    
	rLCDADDR2=LCDBASEL;	
	rLCDADDR3= (640)|(0<<11);
	
	
}