ARM2440 LCD实验
2015-12-21 17:08
239 查看
1. S3C2440内部LCD控制器结构图:
[b]
lcddrv.c
[b]
/* * FILE: lcddrv.c * 提供操作LCD控制器、调色板等的底层函数 */ #include <stdio.h> #include "s3c24xx.h" #include "lcddrv.h" #define GPB0_tout0 (2<<(0*2)) #define GPB0_out (1<<(0*2)) #define GPB1_out (1<<(1*2)) #define GPB0_MSK (3<<(0*2)) #define GPB1_MSK (3<<(1*2)) unsigned int fb_base_addr; unsigned int bpp; unsigned int xsize; unsigned int ysize; static const unsigned short DEMO256pal[]={ 0x0b5e,0xce9a,0xffd9,0x9d99,0xb63a,0xae7c,0xdd71,0x6c57,0xfd4d,0x00ae,0x9c4d,0xb5f8,0xad96,0x0131,0x0176,0xefff,0xcedd,0x9556,0xe4bf,0x00b6,0x22b7,0x002b,0x89de,0x002c,0x57df,0xab5f,0x3031,0x14bf,0x797e,0x5391,0x93ab,0x7239,0x7453,0xafdf,0x71b9,0x8c92,0x014d,0x302e,0x5175,0x0029,0x0969,0x004e,0x2a6d,0x0021,0x3155,0x4b6e,0xd677,0xf6b6,0x9b5f,0x4bb5,0xffd5,0x0027,0xdfdf,0x74d8,0x1256,0x6bcd,0x9b08,0x2ab2,0xbd72,0x84b5,0xfe52,0xd4ad,0x00ad,0xfffc,0x422b,0x73b0,0x0024,0x5246,0x8e5e,0x28b3,0x0050,0x3b52,0x2a4a,0x3a74,0x8559,0x3356,0x1251,0x9abf,0x4034,0x40b1, 0x8cb9,0x00b3,0x5c55,0xdf3d,0x61b7,0x1f5f,0x00d9,0x4c59,0x0926,0xac3f,0x925f,0x85bc,0x29d2,0xc73f,0xef5c,0xcb9f,0x827b,0x5279,0x4af5,0x01b9,0x4290,0xf718,0x126d,0x21a6,0x515e,0xefbd,0xd75e,0x42ab,0x00aa,0x10b3,0x7349,0x63b5,0x61a3,0xaadf,0xcb27,0x87df,0x6359,0xc7df,0x4876,0xb5bc,0x4114,0xfe2e,0xef5e,0x65be,0x43b9,0xe5df,0x21c9,0x7d16,0x6abb,0x5c11,0x49f7,0xbc0b,0x9e1a,0x3b0f,0x202b,0xff12,0x821b,0x842f,0xbccf,0xdefb,0x8a3e,0x68fa,0xa4f1,0x38ae,0x28b7,0x21ad,0x31d7,0x0073,0x182b,0x1831,0x3415,0xbdf6,0x2dbf,0x0a5d,0xc73d,0x182c,0x293e,0x7b3d,0x643d,0x3cbd, 0x92dd,0x09d4,0x1029,0x7cdd,0x6239,0x182e,0x5aea,0x11eb,0x8abc,0x7bfa,0x00a7,0x2153,0x1853,0x1318,0x0109,0x54fa,0x72a7,0x89e3,0x01cf,0x3a07,0x7b17,0x1a14,0x2150,0x23dc,0x4142,0x1b33,0x00a4,0xf6df,0x08fc,0x18ae,0x3a7e,0x18d1,0xa51c,0xff5a,0x1a0f,0x28fa,0xdfbe,0x82de,0x60d7,0x1027,0x48fa,0x5150,0x6213,0x89d6,0x110d,0x9bbb,0xbedd,0x28e1,0x1925,0xf449,0xaa79,0xd5f4,0x693c,0x110a,0x2889,0x08a2,0x923d,0x10a6,0xd9bc,0x5b2e,0x32ec,0xcf7f,0x1025,0x2148,0x74b4,0x6d59,0x9d14,0x0132,0x00f0,0x56bf,0x00f1,0xffff,0x0173,0x0133,0x00b0,0x00b1,0xf7ff,0x08b1,0xfffe,0x08b0, 0x0171,0xf7bf,0x10f3,0xf7fe,0x08ef,0x1192,0xefbe,0x1131,0x2177,0xff9f,0x1116,0xffbc,0x5914,0x22ef,0xb285,0xa6df, }; /* * 初始化用于LCD的引脚 */ void Lcd_Port_Init(void) { GPCUP = 0xffffffff; // 禁止内部上拉 GPCCON = 0xaaaaaaaa; // GPIO管脚用于VD[7:0],LCDVF[2:0],VM,VFRAME,VLINE,VCLK,LEND GPDUP = 0xffffffff; // 禁止内部上拉 GPDCON = 0xaaaaaaaa; // GPIO管脚用于VD[23:8] GPBCON &= ~(GPB0_MSK); // Power enable pin GPBCON |= GPB0_out; GPBDAT &= ~(1<<0); // Power off printf("Initializing GPIO ports..........\n"); } /* * 初始化LCD控制器 * 输入参数: * type: 显示模式 * MODE_TFT_8BIT_240320 : 240*320 8bpp的TFT LCD * MODE_TFT_16BIT_240320 : 240*320 16bpp的TFT LCD * MODE_TFT_8BIT_640480 : 640*480 8bpp的TFT LCD * MODE_TFT_16BIT_640480 : 640*480 16bpp的TFT LCD */ void Tft_Lcd_Init(int type) { switch(type) { case MODE_TFT_8BIT_240320: /* * 设置LCD控制器的控制寄存器LCDCON1~5 * 1. LCDCON1: * 设置VCLK的频率:VCLK(Hz) = HCLK/[(CLKVAL+1)x2] * 选择LCD类型: TFT LCD * 设置显示模式: 8BPP * 先禁止LCD信号输出 * 2. LCDCON2/3/4: * 设置控制信号的时间参数 * 设置分辨率,即行数及列数 * 现在,可以根据公式计算出显示器的频率: * 当HCLK=100MHz时, * Frame Rate = 1/[{(VSPW+1)+(VBPD+1)+(LIINEVAL+1)+(VFPD+1)}x * {(HSPW+1)+(HBPD+1)+(HFPD+1)+(HOZVAL+1)}x * {2x(CLKVAL+1)/(HCLK)}] * = 60Hz * 3. LCDCON5: * 设置显示模式为8BPP时,调色板中的数据格式: 5:6:5 * 设置HSYNC、VSYNC脉冲的极性(这需要参考具体LCD的接口信号): 反转 * 字节交换使能 */ LCDCON1 = (CLKVAL_TFT_240320<<8) | (LCDTYPE_TFT<<5) | \ (BPPMODE_8BPP<<1) | (ENVID_DISABLE<<0); LCDCON2 = (VBPD_240320<<24) | (LINEVAL_TFT_240320<<14) | \ (VFPD_240320<<6) | (VSPW_240320); LCDCON3 = (HBPD_240320<<19) | (HOZVAL_TFT_240320<<8) | (HFPD_240320); LCDCON4 = HSPW_240320; LCDCON5 = (FORMAT8BPP_565<<11) | (HSYNC_INV<<9) | (VSYNC_INV<<8) | \ (BSWP<<1); /* * 设置LCD控制器的地址寄存器LCDSADDR1~3 * 帧内存与视口(view point)完全吻合, * 图像数据格式如下(8BPP时,帧缓冲区中的数据为调色板中的索引值): * |----PAGEWIDTH----| * y/x 0 1 2 239 * 0 idx idx idx ... idx * 1 idx idx idx ... idx * 1. LCDSADDR1: * 设置LCDBANK、LCDBASEU * 2. LCDSADDR2: * 设置LCDBASEL: 帧缓冲区的结束地址A[21:1] * 3. LCDSADDR3: * OFFSIZE等于0,PAGEWIDTH等于(240/2) */ LCDSADDR1 = ((LCDFRAMEBUFFER>>22)<<21) | LOWER21BITS(LCDFRAMEBUFFER>>1); LCDSADDR2 = LOWER21BITS((LCDFRAMEBUFFER+ \ (LINEVAL_TFT_240320+1)*(HOZVAL_TFT_240320+1)*1)>>1); LCDSADDR3 = (0<<11) | (LCD_XSIZE_TFT_240320/2); /* 禁止临时调色板寄存器 */ TPAL = 0; fb_base_addr = LCDFRAMEBUFFER; bpp = 8; xsize = 240; ysize = 320; break; case MODE_TFT_16BIT_240320: /* * 设置LCD控制器的控制寄存器LCDCON1~5 * 1. LCDCON1: * 设置VCLK的频率:VCLK(Hz) = HCLK/[(CLKVAL+1)x2] * 选择LCD类型: TFT LCD * 设置显示模式: 16BPP * 先禁止LCD信号输出 * 2. LCDCON2/3/4: * 设置控制信号的时间参数 * 设置分辨率,即行数及列数 * 现在,可以根据公式计算出显示器的频率: * 当HCLK=100MHz时, * Frame Rate = 1/[{(VSPW+1)+(VBPD+1)+(LIINEVAL+1)+(VFPD+1)}x * {(HSPW+1)+(HBPD+1)+(HFPD+1)+(HOZVAL+1)}x * {2x(CLKVAL+1)/(HCLK)}] * = 60Hz * 3. LCDCON5: * 设置显示模式为16BPP时的数据格式: 5:6:5 * 设置HSYNC、VSYNC脉冲的极性(这需要参考具体LCD的接口信号): 反转 * 半字(2字节)交换使能 */ LCDCON1 = (CLKVAL_TFT_240320<<8) | (LCDTYPE_TFT<<5) | \ (BPPMODE_16BPP<<1) | (ENVID_DISABLE<<0); LCDCON2 = (VBPD_240320<<24) | (LINEVAL_TFT_240320<<14) | \ (VFPD_240320<<6) | (VSPW_240320); LCDCON3 = (HBPD_240320<<19) | (HOZVAL_TFT_240320<<8) | (HFPD_240320); LCDCON4 = HSPW_240320; LCDCON5 = (FORMAT8BPP_565<<11) | (HSYNC_INV<<9) | (VSYNC_INV<<8) | \ (HWSWP<<1); /* * 设置LCD控制器的地址寄存器LCDSADDR1~3 * 帧内存与视口(view point)完全吻合, * 图像数据格式如下: * |----PAGEWIDTH----| * y/x 0 1 2 239 * 0 rgb rgb rgb ... rgb * 1 rgb rgb rgb ... rgb * 1. LCDSADDR1: * 设置LCDBANK、LCDBASEU * 2. LCDSADDR2: * 设置LCDBASEL: 帧缓冲区的结束地址A[21:1] * 3. LCDSADDR3: * OFFSIZE等于0,PAGEWIDTH等于(240*2/2) */ LCDSADDR1 = ((LCDFRAMEBUFFER>>22)<<21) | LOWER21BITS(LCDFRAMEBUFFER>>1); LCDSADDR2 = LOWER21BITS((LCDFRAMEBUFFER+ \ (LINEVAL_TFT_240320+1)*(HOZVAL_TFT_240320+1)*2)>>1); LCDSADDR3 = (0<<11) | (LCD_XSIZE_TFT_240320*2/2); /* 禁止临时调色板寄存器 */ TPAL = 0; fb_base_addr = LCDFRAMEBUFFER; bpp = 16; xsize = 240; ysize = 320; break; case MODE_TFT_8BIT_640480: /* * 设置LCD控制器的控制寄存器LCDCON1~5 * 1. LCDCON1: * 设置VCLK的频率:VCLK(Hz) = HCLK/[(CLKVAL+1)x2] * 选择LCD类型: TFT LCD * 设置显示模式: 8BPP * 先禁止LCD信号输出 * 2. LCDCON2/3/4: * 设置控制信号的时间参数 * 设置分辨率,即行数及列数 * 现在,可以根据公式计算出显示器的频率: * 当HCLK=100MHz时, * Frame Rate = 1/[{(VSPW+1)+(VBPD+1)+(LIINEVAL+1)+(VFPD+1)}x * {(HSPW+1)+(HBPD+1)+(HFPD+1)+(HOZVAL+1)}x * {2x(CLKVAL+1)/(HCLK)}] * = 60Hz * 3. LCDCON5: * 设置显示模式为8BPP时,调色板中的数据格式: 5:6:5 * 设置HSYNC、VSYNC脉冲的极性(这需要参考具体LCD的接口信号): 反转 * 字节交换使能 */ LCDCON1 = (CLKVAL_TFT_640480<<8) | (LCDTYPE_TFT<<5) | \ (BPPMODE_8BPP<<1) | (ENVID_DISABLE<<0); LCDCON2 = (VBPD_640480<<24) | (LINEVAL_TFT_640480<<14) | \ (VFPD_640480<<6) | (VSPW_640480); LCDCON3 = (HBPD_640480<<19) | (HOZVAL_TFT_640480<<8) | (HFPD_640480); LCDCON4 = HSPW_640480; LCDCON5 = (FORMAT8BPP_565<<11) | (HSYNC_INV<<9) | (VSYNC_INV<<8) | \ (BSWP<<1); /* * 设置LCD控制器的地址寄存器LCDSADDR1~3 * 帧内存与视口(view point)完全吻合, * 图像数据格式如下(8BPP时,帧缓冲区中的数据为调色板中的索引值): * |----PAGEWIDTH----| * y/x 0 1 2 639 * 0 idx idx idx ... idx * 1 idx idx idx ... idx * 1. LCDSADDR1: * 设置LCDBANK、LCDBASEU * 2. LCDSADDR2: * 设置LCDBASEL: 帧缓冲区的结束地址A[21:1] * 3. LCDSADDR3: * OFFSIZE等于0,PAGEWIDTH等于(640/2) */ LCDSADDR1 = ((LCDFRAMEBUFFER>>22)<<21) | LOWER21BITS(LCDFRAMEBUFFER>>1); LCDSADDR2 = LOWER21BITS((LCDFRAMEBUFFER+ \ (LINEVAL_TFT_640480+1)*(HOZVAL_TFT_640480+1)*1)>>1); LCDSADDR3 = (0<<11) | (LCD_XSIZE_TFT_640480/2); /* 禁止临时调色板寄存器 */ TPAL = 0; fb_base_addr = LCDFRAMEBUFFER; bpp = 8; xsize = 640; ysize = 480; break; case MODE_TFT_16BIT_640480: /* * 设置LCD控制器的控制寄存器LCDCON1~5 * 1. LCDCON1: * 设置VCLK的频率:VCLK(Hz) = HCLK/[(CLKVAL+1)x2] * 选择LCD类型: TFT LCD * 设置显示模式: 16BPP * 先禁止LCD信号输出 * 2. LCDCON2/3/4: * 设置控制信号的时间参数 * 设置分辨率,即行数及列数 * 现在,可以根据公式计算出显示器的频率: * 当HCLK=100MHz时, * Frame Rate = 1/[{(VSPW+1)+(VBPD+1)+(LIINEVAL+1)+(VFPD+1)}x * {(HSPW+1)+(HBPD+1)+(HFPD+1)+(HOZVAL+1)}x * {2x(CLKVAL+1)/(HCLK)}] * = 60Hz * 3. LCDCON5: * 设置显示模式为16BPP时的数据格式: 5:6:5 * 设置HSYNC、VSYNC脉冲的极性(这需要参考具体LCD的接口信号): 反转 * 半字(2字节)交换使能 */ LCDCON1 = (CLKVAL_TFT_640480<<8) | (LCDTYPE_TFT<<5) | \ (BPPMODE_16BPP<<1) | (ENVID_DISABLE<<0); LCDCON2 = (VBPD_640480<<24) | (LINEVAL_TFT_640480<<14) | \ (VFPD_640480<<6) | (VSPW_640480); LCDCON3 = (HBPD_640480<<19) | (HOZVAL_TFT_640480<<8) | (HFPD_640480); LCDCON4 = HSPW_640480; LCDCON5 = (FORMAT8BPP_565<<11) | (HSYNC_INV<<9) | (VSYNC_INV<<8) | \ (HWSWP<<1); /* * 设置LCD控制器的地址寄存器LCDSADDR1~3 * 帧内存与视口(view point)完全吻合, * 图像数据格式如下: * |----PAGEWIDTH----| * y/x 0 1 2 639 * 0 rgb rgb rgb ... rgb * 1 rgb rgb rgb ... rgb * 1. LCDSADDR1: * 设置LCDBANK、LCDBASEU * 2. LCDSADDR2: * 设置LCDBASEL: 帧缓冲区的结束地址A[21:1] * 3. LCDSADDR3: * OFFSIZE等于0,PAGEWIDTH等于(640*2/2) */ LCDSADDR1 = ((LCDFRAMEBUFFER>>22)<<21) | LOWER21BITS(LCDFRAMEBUFFER>>1); LCDSADDR2 = LOWER21BITS((LCDFRAMEBUFFER+ \ (LINEVAL_TFT_640480+1)*(HOZVAL_TFT_640480+1)*2)>>1); LCDSADDR3 = (0<<11) | (LCD_XSIZE_TFT_640480*2/2); /* 禁止临时调色板寄存器 */ TPAL = 0; fb_base_addr = LCDFRAMEBUFFER; bpp = 16; xsize = 640; ysize = 480; break; default: break; } } /* * 设置调色板 */ void Lcd_Palette8Bit_Init(void) { int i; volatile unsigned int *palette; LCDCON1 &= ~0x01; // stop lcd controller LCDCON5 |= (FORMAT8BPP_565<<11); // 设置调色板中数据格式为5:6:5 palette = (volatile unsigned int *)PALETTE; for (i = 0; i < 256; i++) *palette++ = DEMO256pal[i]; LCDCON1 |= 0x01; // re-enable lcd controller } /* * 改变调色板为一种颜色 * 输入参数: * color: 颜色值,格式为0xRRGGBB */ void ChangePalette(UINT32 color) { int i; unsigned char red, green, blue; UINT32 *palette; red = (color >> 19) & 0x1f; green = (color >> 10) & 0x3f; blue = (color >> 3) & 0x1f; color = (red << 11) | (green << 5) | blue; // 格式5:6:5 palette=(UINT32 *)PALETTE; LCDCON1 &= ~0x01; // stop lcd controller for (i = 0; i < 256; i++) { // while (((LCDCON5>>15) & 0x3) == 2); // 等待直到VSTATUS不为”有效” *palette++ = color; } LCDCON1 |= 0x01; // re-enable lcd controller } /* * 设置是否输出LCD电源开关信号LCD_PWREN * 输入参数: * invpwren: 0 - LCD_PWREN有效时为正常极性 * 1 - LCD_PWREN有效时为反转极性 * pwren: 0 - LCD_PWREN输出有效 * 1 - LCD_PWREN输出无效 */ void Lcd_PowerEnable(int invpwren, int pwren) { GPGCON = (GPGCON & (~(3<<8))) | (3<<8); // GPG4用作LCD_PWREN GPGUP = (GPGUP & (~(1<<4))) | (1<<4); // 禁止内部上拉 LCDCON5 = (LCDCON5 & (~(1<<5))) | (invpwren<<5); // 设置LCD_PWREN的极性: 正常/反转 LCDCON5 = (LCDCON5 & (~(1<<3))) | (pwren<<3); // 设置是否输出LCD_PWREN } /* * 设置LCD控制器是否输出信号 * 输入参数: * onoff: * 0 : 关闭 * 1 : 打开 */ void Lcd_EnvidOnOff(int onoff) { if (onoff == 1) { LCDCON1 |= 1; // ENVID ON GPBDAT |= (1<<0); // Power on } else { LCDCON1 &= 0x3fffe; // ENVID Off GPBDAT &= ~(1<<0); // Power off } } /* * 使用临时调色板寄存器输出单色图像 * 输入参数: * color: 颜色值,格式为0xRRGGBB */ void ClearScrWithTmpPlt(UINT32 color) { TPAL = (1<<24)|((color & 0xffffff)<<0); } /* * 停止使用临时调色板寄存器 */ void DisableTmpPlt(void) { TPAL = 0; }
lcddrv.c
相关文章推荐
- 兔子增长序列(第1届第3题)
- 29.Which two statements are true regarding constraints?
- 链家全解剖:必须佩服、也必须警惕的巨无霸
- Java 泛型类型的一些限制
- 斯坦福机器学习课程 Exercise 习题三
- C/C++面试题大集锦
- Hessian学习笔记之Hessian实例
- 使用maven profile实现多环境可移植构建
- 设计模式六大原则
- oracle 创建唯一索引
- 【Oracle】物理体系结构
- unity5.0材质添加问题
- 数字媒体技术14---wangronggang-VR
- AngularJS 的安全Apply
- java调用linux脚本
- CardView
- 关于多个notification时,其他notification点击无效的解决办法
- CardView
- CardView
- java设计模式----观察者模式