S3C2440之LCD驱动代码模板（RealView MDK）

好记心不如烂笔头，为方便以后查看代码及代码重复利用，这里贴出S3C2440 LCD控制初始化代码。使用友善MINI2440开发板，LCD为320*240，开发环境为RealView MDK 4.22。

该源码结构简单明了，，原始工程下载地址：点击打开链接

寄存器宏定义：

#define rGPCCON(*(volatile unsigned long *)0x56000020)#define rGPCUP(*(volatile unsigned long *)0x56000028)#define rGPDCON(*(volatile unsigned long *)0x56000030)#define rGPDUP(*(volatile unsigned long *)0x56000038)#define rLCDCON1(*(volatile unsigned long *)0x4D000000)#define rLCDCON2(*(volatile unsigned long *)0x4D000004)#define rLCDCON3(*(volatile unsigned long *)0x4D000008)#define rLCDCON4(*(volatile unsigned long *)0x4D00000C)#define rLCDCON5(*(volatile unsigned long *)0x4D000010)#define rLCDSADDR1(*(volatile unsigned long *)0x4D000014)#define rLCDSADDR2(*(volatile unsigned long *)0x4D000018)#define rLCDSADDR3(*(volatile unsigned long *)0x4D00001C)#define rTPAL(*(volatile unsigned long *)0x4D000050)显示缓冲区：#define LCD_XSIZE320#define LCD_YSIZE240unsigned int LCD_BUFFER[LCD_YSIZE][LCD_XSIZE];GPIO初始化：void LCD_GPIO_Init(void){rGPCUP = 0xffffffff;rGPCCON = 0xaaaa02a8;rGPDUP = 0xffffffff;rGPDCON = 0xaaaaaaaa;}LCD初始化：#define CLKVAL6#define TFT_MODE3#define BPP_MODE_16BIT0x0c#define BPP_MODE_24BIT0x0D#define VBPD9#define LINEVAL(LCD_YSIZE – 1)#define VFPD1#define VSPW2#define HBPD6//0x0C#define HOZVAL(LCD_XSIZE – 1)#define HFPD5#define HSPW0//1#define BPP24BL0#define FRM5651#define INVVCLK1#define INVHSYNC1#define INVVSYNC1#define BSWP0#define HWSWP0void LCD_Init(void){LCD_GPIO_Init();rLCDCON1 = (CLKVAL << 8) | (TFT_MODE << 5) | (BPP_MODE_24BIT << 1);rLCDCON2 = (VBPD << 24) | (LINEVAL << 14) | (VFPD << 6) | (VSPW << 0);rLCDCON3 = (HBPD << 19) | (HOZVAL << 8) | (HFPD << 0);rLCDCON4 = HSPW;rLCDCON5 = (BPP24BL << 12) | (INVVCLK << 10) | (INVHSYNC << 9) | (INVVSYNC << 8) | (BSWP << 1) | (HWSWP << 0);rLCDSADDR1 = ((unsigned int)LCD_BUFFER) >> 1;rLCDSADDR2 = ((unsigned int)LCD_BUFFER + LCD_YSIZE * LCD_XSIZE * sizeof(LCD_BUFFER[0][0])) >> 1;rLCDSADDR3 = LCD_XSIZE*2;}开启/关闭LCD：void LCD_ON(void){rLCDCON1 |= 1;}void LCD_OFF(void){rLCDCON1 &= ~1;}清屏函数：void LCD_ClrScr(unsigned int color){int i, j;for(j = 0; j < LCD_YSIZE; j++)for(i = 0; i < LCD_XSIZE; i++)LCD_BUFFER[j][i] = color;}使用临时调色板清屏：void LCD_ClrScrUseTPAL(unsigned int color24){rTPAL = (1 << 24) | color24;}

禁止TPAL：

void LCD_DisableTPAL(void){rTPAL &= ~(1 << 24);}FillRect函数：void LCD_FillRect(int x0, int y0, int x1, int y1, unsigned int color){int i, j;if((x0 > x1) || (y0 > y1))return;for(j = y0; j <= y1; j++)for(i = x0; i <= x1; i++)LCD_BUFFER[j][i] = color;}

爱情要完结的时候自会完结，到时候，你不想画上句号也不行。