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这是一款Arduino相机模块，使用监控摄像头的数字图像处理芯片-OV0706。 
硬件组件 Arduino UNO和GenuinoUNO × 1 OV7670相机模块 × 1 电阻4.75k欧姆 × 1 电阻10k欧姆 × 1 面包板（通用） × 1 介绍 通过成为patreon（http://www.patreon.com/techmirtz）的赞助人来支持我，帮助我成长并制作新的项目。 OV7670图像传感器是一款小尺寸，低电压，单芯片VGA摄像头和CMOS图像处理器，适用于所有功能。它提供各种格式的全帧，子采样或窗口8位图像，通过串行摄像机控制总线（SCCB）接口进行控制。 相机模块由单个+ 3.3V电源和相机模块XCLK引脚的外部时钟源供电。OV7670相机模块内置板载LDO 器件仅需3.3V单电源，可用于Arduino，STM32，Chipkit，ARM，DSP，F PGA等。 引脚 该模块的引脚分布是： 
OV7670引脚定义 OV7670模块规格如下： 光学尺寸1/6英寸 分辨率640×480 VGA 板载稳压器，仅需3.3V单电源 安装高品质的F1.8 / 6mm镜头 低光照操作的高灵敏度 用于子采样的VarioPixel®方法 自动图像控制功能包括：自动 曝光控制（AEC），自动增益控制（AGC），自动白平衡（AWB），自动带通滤波器（ABF）和自动黑电平校准（ABLC） 图像质量控制包括色彩饱和度，色调，伽玛，锐度（边缘增强）和抗晕光 ISP包括降噪和缺陷校正 支持LED和闪光灯频闪模式 支持缩放 镜头阴影校正 闪烁（50/60 Hz）自动检测 饱和度自动调节（UV调节） 边缘增强级别自动调整 去噪级别自动调整 要运行项目，必须通过命令行执行java代码（需要JDK ）。该脚本将搜索从Arduino接收的图像，然后将其保存在PC上。 
设置电路 请参考原理图并将电路连接起来。 在PC上安装JDK 您必须下载此设备才能在PC上连接此摄像头传感器模块。打开zip文件并安装到您的计算机上。默认情况下，这将安装到程序文件文件夹中的C驱动器。从Oracle.com 下载JDK 。 
检查COM端口并继续前进 
找出你的Arduino连接的USB端口，如COM4或COM5。您可以在控制面板>设备管理器>端口（COM和LPT）>右键单击>属性>端口设置>高级> COM端口号> /选择您的端口号/中进行检查。 至于我的，它是COM5港口。 根据Arduino连接的端口号，下载相应的文件。COM1= com_1.rar，COM2 = com_2.rar等 在WinRaR上打开com＃.rar，从com _＃。rar中提取/复制'code'文件夹，转到本地磁盘>程序文件> Java> jdk1.8.0_74> bin并将其粘贴到那里。 
您必须在C盘/本地磁盘（C  上创建一个新文件夹。这将是您的相机模块传感器拍摄照片的目的地。将此文件夹命名为out（尽管可能是任何内容）。使用Extra.rar 
下载并解压缩下面的Extra.rar文件并将其打开。如您所见，有src文件夹，lib文件夹和“win32com.dll”。您必须复制并将“win32com.dll”放在“C：\ Program Files \ Java \ jdk1.8.0_74 \ jre \ bin”目录中。 然后，打开lib，你可以在其中看到“comm.jar”和“javax.comm.properties”。复制并粘贴“C：\ Program Files \ Java \ jdk1.8.0_74 \ jre \ lib \ ext”中的“comm.jar”和“C：\ Program Files \ Java \ jdk1”中的“javax.comm.properties” .8.0_74 \ jre\ lib“目录。 注意：它可能会要求管理员许可，无论如何都要继续。 CMD 
打开cmd并通过写入其地址打开代码文件夹所在的文件夹。我的是“C：\ Program Files \ Java\ jdk1.8.0_74 \ bin”。 单击enter，它将显示“C：\ Program Files \ Java \ jdk1.8.0_74 \ bin>”。 现在，写“java code.SimpleRead”。它应该是这样的--->C：\ Program Files \ Java \ jdk1.8.0_74 \bin> java代码。SimpleRead。 您可以参考图片寻求帮助。 结果 
如果您的cmd无法找到图像，请尝试将Arduino的USB从USB2.0切换到USB3.0（蓝色插槽），反之亦然。 如果您收到争夺图片，则需要编辑示例源代码。编辑行：wrReg（0×11，12 ）; 尝试将12改为11/10/9/13。 将其上传到arduino并再次运行CMD代码。 原理图 
代码 #include <stdint.h> #include <avr/io.h> #include <util/twi.h> #include <util/delay.h> #include <avr/pgmspace.h> #define F_CPU 16000000UL #define vga 0 #define qvga 1 #define qqvga 2 #define yuv422 0 #define rgb565 1 #define bayerRGB 2 #define camAddr_WR 0x42 #define camAddr_RD 0x43 /* Registers */ #define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */ #define REG_BLUE 0x01 /* blue gain */ #define REG_RED 0x02 /* red gain */ #define REG_VREF 0x03 /* Pieces of GAIN, VSTART, VSTOP */ #define REG_COM1 0x04 /* Control 1 */ #define COM1_CCIR656 0x40 /* CCIR656 enable */ #define REG_BAVE 0x05 /* U/B Average level */ #define REG_GbAVE 0x06 /* Y/Gb Average level */ #define REG_AECHH 0x07 /* AEC MS 5 bits */ #define REG_RAVE 0x08 /* V/R Average level */ #define REG_COM2 0x09 /* Control 2 */ #define COM2_SSLEEP 0x10 /* Soft sleep mode */ #define REG_PID 0x0a /* Product ID MSB */ #define REG_VER 0x0b /* Product ID LSB */ #define REG_COM3 0x0c /* Control 3 */ #define COM3_SWAP 0x40 /* Byte swap */ #define COM3_SCALEEN 0x08 /* Enable scaling */ #define COM3_DCWEN 0x04 /* Enable downsamp/crop/window */ #define REG_COM4 0x0d /* Control 4 */ #define REG_COM5 0x0e /* All "reserved" */ #define REG_COM6 0x0f /* Control 6 */ #define REG_AECH 0x10 /* More bits of AEC value */ #define REG_CLKRC 0x11 /* Clocl control */ #define CLK_EXT 0x40 /* Use external clock directly */ #define CLK_SCALE 0x3f /* Mask for internal clock scale */ #define REG_COM7 0x12 /* Control 7 */ //REG mean address. #define COM7_RESET 0x80 /* Register reset */ #define COM7_FMT_MASK 0x38 #define COM7_FMT_VGA 0x00 #define COM7_FMT_CIF 0x20 /* CIF format */ #define COM7_FMT_QVGA 0x10 /* QVGA format */ #define COM7_FMT_QCIF 0x08 /* QCIF format */ #define COM7_RGB 0x04 /* bits 0 and 2 - RGBformat */ #define COM7_YUV 0x00 /* YUV */ #define COM7_BAYER 0x01 /* Bayer format */ #define COM7_PBAYER 0x05 /* "  rocessed bayer" */#define REG_COM8 0x13 /* Control 8 */ #define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */ #define COM8_AECSTEP 0x40 /* Unlimited AEC step size */ #define COM8_BFILT 0x20 /* Band filter enable */ #define COM8_AGC 0x04 /* Auto gain enable */ #define COM8_AWB 0x02 /* White balance enable */ #define COM8_AEC 0x01 /* Auto exposure enable */ #define REG_COM9 0x14 /* Control 9- gain ceiling */ #define REG_COM10 0x15 /* Control 10 */ #define COM10_HSYNC 0x40 /* HSYNC instead of HREF */ #define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */ #define COM10_HREF_REV 0x08 /* Reverse HREF */ #define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */ #define COM10_VS_NEG 0x02 /* VSYNC negative */ #define COM10_HS_NEG 0x01 /* HSYNC negative */ #define REG_HSTART 0x17 /* Horiz start high bits */ #define REG_HSTOP 0x18 /* Horiz stop high bits */ #define REG_VSTART 0x19 /* Vert start high bits */ #define REG_VSTOP 0x1a /* Vert stop high bits */ #define REG_PSHFT 0x1b /* Pixel delay after HREF */ #define REG_MIDH 0x1c /* Manuf. ID high */ #define REG_MIDL 0x1d /* Manuf. ID low */ #define REG_MVFP 0x1e /* Mirror / vflip */ #define MVFP_MIRROR 0x20 /* Mirror image */ #define MVFP_FLIP 0x10 /* Vertical flip */ #define REG_AEW 0x24 /* AGC upper limit */ #define REG_AEB 0x25 /* AGC lowerlimit */ #define REG_VPT 0x26 /* AGC/AEC fast mode op region */ #define REG_HSYST 0x30 /* HSYNC rising edge delay */ #define REG_HSYEN 0x31 /* HSYNC falling edge delay */ #define REG_HREF 0x32 /* HREF pieces */ #define REG_TSLB 0x3a /* lots of stuff */ #define TSLB_YLAST 0x04 /* UYVY or VYUY - see com13 */ #define REG_COM11 0x3b /* Control 11 */ #define COM11_NIGHT 0x80 /* NIght mode enable */ #define COM11_NMFR 0x60 /* Two bit NM frame rate */ #define COM11_HZAUTO 0x10 /* Auto detect 50/60 Hz */ #define COM11_50HZ 0x08 /* Manual 50Hz select */ #define COM11_EXP 0x02 #define REG_COM12 0x3c /* Control 12 */ #define COM12_HREF 0x80 /* HREF always */ #define REG_COM13 0x3d /* Control 13 */ #define COM13_GAMMA 0x80 /* Gamma enable */ #define COM13_UVSAT 0x40 /* UV saturation auto adjustment */ #define COM13_UVSWAP 0x01 /* V before U - w/TSLB */ #define REG_COM14 0x3e /* Control 14 */ #define COM14_DCWEN 0x10 /* DCW/PCLK-scale enable */ #define REG_EDGE 0x3f /* Edge enhancement factor */ #define REG_COM15 0x40 /* Control 15 */ #define COM15_R10F0 0x00 /* Data range 10 to F0 */ #define COM15_R01FE 0x80 /* 01 to FE */ #define COM15_R00FF 0xc0 /* 00 to FF */ #define COM15_RGB565 0x10 /* RGB565 output */ #define COM15_RGB555 0x30 /* RGB555 output */ #define REG_COM16 0x41 /* Control 16 */ #define COM16_AWBGAIN 0x08 /* AWB gain enable */ #define REG_COM17 0x42 /* Control 17 */ #define COM17_AECWIN 0xc0 /* AEC window - must match COM4 */ #define COM17_CBAR 0x08 /* DSP Color bar */ /* * This matrix defines how the colors aregenerated, must be * tweaked to adjust hue and saturation. * * Order: v-red, v-green, v-blue, u-red,u-green, u-blue * They are nine-bit signed quantities, withthe sign bit * stored in0x58.Sign for v-red is bit 0,and up from there. */ #define REG_CMATRIX_BASE 0x4f #define CMATRIX_LEN 6 #define REG_CMATRIX_SIGN 0x58 #define REG_BRIGHT 0x55 /* Brightness */ #define REG_CONTRAS 0x56 /* Contrast control */ #define REG_GFIX 0x69 /* Fix gain control */ #define REG_REG76 0x76 /* OV's name */ #define R76_BLKPCOR 0x80 /* Black pixel correction enable */ #define R76_WHTPCOR 0x40 /* White pixel correction enable */ #define REG_RGB444 0x8c /* RGB 444 control */ #define R444_ENABLE 0x02 /* Turn on RGB444, overrides 5x5 */ #define R444_RGBX 0x01 /* Empty nibble at end */ #define REG_HAECC1 0x9f /* Hist AEC/AGC control 1 */ #define REG_HAECC2 0xa0 /* Hist AEC/AGC control 2 */ #define REG_BD50MAX 0xa5 /* 50hz banding step limit */ #define REG_HAECC3 0xa6 /* Hist AEC/AGC control 3 */ #define REG_HAECC4 0xa7 /* Hist AEC/AGC control 4 */ #define REG_HAECC5 0xa8 /* Hist AEC/AGC control 5 */ #define REG_HAECC6 0xa9 /* Hist AEC/AGC control 6 */ #define REG_HAECC7 0xaa /* Hist AEC/AGC control 7 */ #define REG_BD60MAX 0xab /* 60hz banding step limit */ #define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */ #define REG_BLUE 0x01 /* blue gain */ #define REG_RED 0x02 /* red gain */ #define REG_VREF 0x03 /* Pieces of GAIN, VSTART, VSTOP */ #define REG_COM1 0x04 /* Control 1 */ #define COM1_CCIR656 0x40 /* CCIR656 enable */ #define REG_BAVE 0x05 /* U/B Average level */ #define REG_GbAVE 0x06 /* Y/Gb Average level */ #define REG_AECHH 0x07 /* AEC MS 5 bits */ #define REG_RAVE 0x08 /* V/R Average level */ #define REG_COM2 0x09 /* Control 2 */ #define COM2_SSLEEP 0x10 /* Soft sleep mode */ #define REG_PID 0x0a /* Product ID MSB */ #define REG_VER 0x0b /* Product ID LSB */ #define REG_COM3 0x0c /* Control 3 */ #define COM3_SWAP 0x40 /* Byte swap */ #define COM3_SCALEEN 0x08 /* Enable scaling */ #define COM3_DCWEN 0x04 /* Enable downsamp/crop/window */ #define REG_COM4 0x0d /* Control 4 */ #define REG_COM5 0x0e /* All "reserved" */ #define REG_COM6 0x0f /* Control 6 */ #define REG_AECH 0x10 /* More bits of AEC value */ #define REG_CLKRC 0x11 /* Clocl control */ #define CLK_EXT 0x40 /* Use external clock directly */ #define CLK_SCALE 0x3f /* Mask for internal clock scale */ #define REG_COM7 0x12 /* Control 7 */ #define COM7_RESET 0x80 /* Register reset */ #define COM7_FMT_MASK 0x38 #define COM7_FMT_VGA 0x00 #define COM7_FMT_CIF 0x20 /* CIF format */ #define COM7_FMT_QVGA 0x10 /* QVGA format */ #define COM7_FMT_QCIF 0x08 /* QCIF format */ #define COM7_RGB 0x04 /* bits 0 and 2 - RGB format */ #define COM7_YUV 0x00 /* YUV */ #define COM7_BAYER 0x01 /* Bayer format */ #define COM7_PBAYER 0x05 /* " rocessed bayer" */#define REG_COM8 0x13 /* Control 8 */ #define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */ #define COM8_AECSTEP 0x40 /* Unlimited AEC step size */ #define COM8_BFILT 0x20 /* Band filter enable */ #define COM8_AGC 0x04 /* Auto gain enable */ #define COM8_AWB 0x02 /* White balance enable */ #define COM8_AEC 0x01 /* Auto exposure enable */ #define REG_COM9 0x14 /* Control 9- gain ceiling */ #define REG_COM10 0x15 /* Control 10 */ #define COM10_HSYNC 0x40 /* HSYNC instead of HREF */ #define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */ #define COM10_HREF_REV 0x08 /* Reverse HREF */ #define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */ #define COM10_VS_NEG 0x02 /* VSYNC negative */ #define COM10_HS_NEG 0x01 /* HSYNC negative */ #define REG_HSTART 0x17 /* Horiz start high bits */ #define REG_HSTOP 0x18 /* Horiz stop high bits */ #define REG_VSTART 0x19 /* Vert start high bits */ #define REG_VSTOP 0x1a /* Vert stop high bits */ #define REG_PSHFT 0x1b /* Pixel delay after HREF */ #define REG_MIDH 0x1c /* Manuf. ID high */ #define REG_MIDL 0x1d /* Manuf. ID low */ #define REG_MVFP 0x1e /* Mirror / vflip */ #define MVFP_MIRROR 0x20 /* Mirror image */ #define MVFP_FLIP 0x10 /* Vertical flip */ #define REG_AEW 0x24 /* AGC upper limit */ #define REG_AEB 0x25 /* AGC lower limit */ #define REG_VPT 0x26 /* AGC/AEC fast mode op region */ #define REG_HSYST 0x30 /* HSYNC rising edge delay */ #define REG_HSYEN 0x31 /* HSYNC falling edge delay */ #define REG_HREF 0x32 /* HREF pieces */ #define REG_TSLB 0x3a /* lots of stuff */ #define TSLB_YLAST 0x04 /* UYVY or VYUY - see com13 */ #define REG_COM11 0x3b /* Control 11 */ #define COM11_NIGHT 0x80 /* NIght mode enable */ #define COM11_NMFR 0x60 /* Two bit NM frame rate */ #define COM11_HZAUTO 0x10 /* Auto detect 50/60 Hz */ #define COM11_50HZ 0x08 /* Manual 50Hz select */ #define COM11_EXP 0x02 #define REG_COM12 0x3c /* Control 12 */ #define COM12_HREF 0x80 /* HREF always */ #define REG_COM13 0x3d /* Control 13 */ #define COM13_GAMMA 0x80 /* Gamma enable */ #define COM13_UVSAT 0x40 /* UV saturation auto adjustment */ #define COM13_UVSWAP 0x01 /* V before U - w/TSLB */ #define REG_COM14 0x3e /* Control 14 */ #define COM14_DCWEN 0x10 /* DCW/PCLK-scale enable */ #define REG_EDGE 0x3f /* Edge enhancement factor */ #define REG_COM15 0x40 /* Control 15 */ #define COM15_R10F0 0x00 /* Data range 10 to F0 */ #define COM15_R01FE 0x80 /* 01 to FE */ #define COM15_R00FF 0xc0 /* 00 to FF */ #define COM15_RGB565 0x10 /* RGB565 output */ #define COM15_RGB555 0x30 /* RGB555 output */ #define REG_COM16 0x41 /* Control 16 */ #define COM16_AWBGAIN 0x08 /* AWB gain enable */ #define REG_COM17 0x42 /* Control 17 */ #define COM17_AECWIN 0xc0 /* AEC window - must match COM4 */ #define COM17_CBAR 0x08 /* DSP Color bar */ #define CMATRIX_LEN 6 #define REG_BRIGHT 0x55 /* Brightness */ #define REG_REG76 0x76 /* OV's name */ #define R76_BLKPCOR 0x80 /* Black pixel correction enable */ #define R76_WHTPCOR 0x40 /* White pixel correction enable */ #define REG_RGB444 0x8c /* RGB 444 control */ #define R444_ENABLE 0x02 /* Turn on RGB444, overrides 5x5 */ #define R444_RGBX 0x01 /* Empty nibble at end */ #define REG_HAECC1 0x9f /* Hist AEC/AGC control 1 */ #define REG_HAECC2 0xa0 /* Hist AEC/AGC control 2 */ #define REG_BD50MAX 0xa5 /* 50hz banding step limit */ #define REG_HAECC3 0xa6 /* Hist AEC/AGC control 3 */ #define REG_HAECC4 0xa7 /* Hist AEC/AGCcontrol 4 */ #define REG_HAECC5 0xa8 /* Hist AEC/AGC control 5 */ #define REG_HAECC6 0xa9 /* Hist AEC/AGC control 6 */ #define REG_HAECC7 0xaa /* Hist AEC/AGC control 7 */ #define REG_BD60MAX 0xab /* 60hz banding step limit */ #define MTX1 0x4f /* MatrixCoefficient 1 */ #define MTX2 0x50 /* MatrixCoefficient 2 */ #define MTX3 0x51 /* MatrixCoefficient 3 */ #define MTX4 0x52 /* MatrixCoefficient 4 */ #define MTX5 0x53 /* Matrix Coefficient 5 */ #define MTX6 0x54 /* MatrixCoefficient 6 */ #define REG_CONTRAS 0x56 /* Contrast control */ #define MTXS 0x58 /* MatrixCoefficient Sign */ #define AWBC7 0x59 /* AWB Control 7 */ #define AWBC8 0x5a /* AWB Control 8 */ #define AWBC9 0x5b /* AWB Control 9 */ #define AWBC10 0x5c /* AWB Control10 */ #define AWBC11 0x5d /* AWB Control11 */ #define AWBC12 0x5e /* AWB Control12 */ #define REG_GFI 0x69 /* Fix gain control */ #define GGAIN 0x6a /* G Channel AWB Gain */ #define DBLV 0x6b #define AWBCTR3 0x6c /* AWB Control 3 */ #define AWBCTR2 0x6d /* AWB Control 2 */ #define AWBCTR1 0x6e /* AWB Control 1 */ #define AWBCTR0 0x6f /* AWB Control 0 */ struct regval_list{ uint8_t reg_num; uint16_t value; }; const struct regval_list qvga_ov7670[] PROGMEM = { {REG_COM14, 0x19 }, { 0x72, 0x11 }, { 0x73, 0xf1 }, {REG_HSTART, 0x16 }, {REG_HSTOP, 0x04 }, {REG_HREF, 0xa4 }, {REG_VSTART, 0x02 }, {REG_VSTOP, 0x7a }, {REG_VREF, 0x0a }, /* {REG_HSTART, 0x16 }, {REG_HSTOP, 0x04 }, {REG_HREF, 0x24 }, {REG_VSTART, 0x02 }, {REG_VSTOP, 0x7a }, {REG_VREF, 0x0a },*/ { 0xff, 0xff }, /* END MARKER */ }; const struct regval_list yuv422_ov7670[] PROGMEM = { {REG_COM7, 0x0 }, /* Selects YUV mode */ {REG_RGB444, 0 }, /* No RGB444please */ {REG_COM1, 0 }, {REG_COM15, COM15_R00FF }, {REG_COM9, 0x6A }, /* 128x gain ceiling; 0x8 is reserved bit*/ { 0x4f, 0x80 }, /* "matrixcoefficient 1" */ { 0x50, 0x80 }, /* "matrixcoefficient 2" */ { 0x51, 0 }, /* vb */ { 0x52, 0x22 }, /* "matrixcoefficient 4" */ { 0x53, 0x5e }, /* "matrixcoefficient 5" */ { 0x54, 0x80 }, /* "matrixcoefficient 6" */ {REG_COM13, COM13_UVSAT }, { 0xff, 0xff }, /* END MARKER*/ }; const struct regval_list ov7670_default_regs[] PROGMEM = {//from the linux driver {REG_COM7, COM7_RESET }, {REG_TSLB, 0x04 }, /* OV */ {REG_COM7, 0 }, /* VGA */ /* *Set the hardware window. These valuesfrom OV don't entirely *make sense - hstop is less than hstart. But they work... */ {REG_HSTART, 0x13 }, { REG_HSTOP, 0x01 }, {REG_HREF, 0xb6 }, { REG_VSTART, 0x02 }, {REG_VSTOP, 0x7a }, { REG_VREF, 0x0a }, {REG_COM3, 0 }, {REG_COM14, 0 }, /* Mystery scaling numbers */ { 0x70, 0x3a }, { 0x71, 0x35 }, { 0x72, 0x11 }, { 0x73, 0xf0 }, { 0xa2,/* 0x02 changed to 1*/1 }, { REG_COM10, 0x0 }, /* Gamma curve values */ { 0x7a, 0x20 }, { 0x7b, 0x10 }, { 0x7c, 0x1e }, { 0x7d, 0x35 }, { 0x7e, 0x5a }, { 0x7f, 0x69 }, { 0x80, 0x76 }, { 0x81, 0x80 }, { 0x82, 0x88 }, { 0x83, 0x8f }, { 0x84, 0x96 }, { 0x85, 0xa3 }, { 0x86, 0xaf }, { 0x87, 0xc4 }, { 0x88, 0xd7 }, { 0x89, 0xe8 }, /* AGC and AEC parameters. Note we start by disabling those features, then turn them only after tweaking the values. */ {REG_COM8, COM8_FASTAEC | COM8_AECSTEP }, {REG_GAIN, 0 }, { REG_AECH,0 }, {REG_COM4, 0x40 }, /* magic reserved bit */ {REG_COM9, 0x18 }, /* 4x gain + magic rsvd bit */ {REG_BD50MAX, 0x05 }, { REG_BD60MAX, 0x07 }, {REG_AEW, 0x95 }, { REG_AEB, 0x33 }, {REG_VPT, 0xe3 }, { REG_HAECC1, 0x78 }, {REG_HAECC2, 0x68 }, { 0xa1, 0x03 }, /* magic */ {REG_HAECC3, 0xd8 }, { REG_HAECC4, 0xd8 }, {REG_HAECC5, 0xf0 }, { REG_HAECC6, 0x90 }, {REG_HAECC7, 0x94 }, {REG_COM8, COM8_FASTAEC | COM8_AECSTEP | COM8_AGC | COM8_AEC }, { 0x30, 0 }, { 0x31, 0 },//disable some delays /* Almost all of these are magic "reserved"values. */ {REG_COM5, 0x61 }, { REG_COM6, 0x4b }, { 0x16, 0x02 }, { REG_MVFP, 0x07 }, { 0x21, 0x02 }, { 0x22, 0x91 }, { 0x29, 0x07 }, { 0x33, 0x0b }, { 0x35, 0x0b }, { 0x37, 0x1d }, { 0x38, 0x71 }, { 0x39, 0x2a }, {REG_COM12, 0x78 }, { 0x4d, 0x40 }, { 0x4e, 0x20 }, { REG_GFIX, 0 }, /*{0x6b, 0x4a},*/{ 0x74, 0x10 }, { 0x8d, 0x4f }, { 0x8e, 0 }, { 0x8f, 0 }, { 0x90, 0 }, { 0x91, 0 }, { 0x96, 0 }, { 0x9a, 0 }, { 0xb0, 0x84 }, { 0xb1, 0x0c }, { 0xb2, 0x0e }, { 0xb3, 0x82 }, { 0xb8, 0x0a }, /* More reserved magic, some of which tweaks whitebalance */ { 0x43, 0x0a }, { 0x44, 0xf0 }, { 0x45, 0x34 }, { 0x46, 0x58 }, { 0x47, 0x28 }, { 0x48, 0x3a }, { 0x59, 0x88 }, { 0x5a, 0x88 }, { 0x5b, 0x44 }, { 0x5c, 0x67 }, { 0x5d, 0x49 }, { 0x5e, 0x0e }, { 0x6c, 0x0a }, { 0x6d, 0x55 }, { 0x6e, 0x11 }, { 0x6f, 0x9e }, /* it was 0x9F "9e for advance AWB" */ { 0x6a, 0x40 }, { REG_BLUE, 0x40 }, { REG_RED,0x60 }, {REG_COM8, COM8_FASTAEC | COM8_AECSTEP | COM8_AGC | COM8_AEC | COM8_AWB }, /* Matrix coefficients */ { 0x4f, 0x80 }, { 0x50, 0x80 }, { 0x51, 0 }, { 0x52, 0x22 }, { 0x53, 0x5e }, { 0x54, 0x80 }, { 0x58, 0x9e }, {REG_COM16, COM16_AWBGAIN }, { REG_EDGE, 0 }, { 0x75, 0x05 }, { REG_REG76, 0xe1 }, { 0x4c, 0 }, { 0x77, 0x01 }, {REG_COM13, /*0xc3*/0x48 }, { 0x4b, 0x09 }, { 0xc9, 0x60 }, /*{REG_COM16,0x38},*/ { 0x56, 0x40 }, { 0x34, 0x11 }, { REG_COM11, COM11_EXP| COM11_HZAUTO }, { 0xa4, 0x82/*Was 0x88*/ }, { 0x96, 0 }, { 0x97, 0x30 }, { 0x98, 0x20 }, { 0x99, 0x30 }, { 0x9a, 0x84 }, { 0x9b, 0x29 }, { 0x9c, 0x03 }, { 0x9d, 0x4c }, { 0x9e, 0x3f }, { 0x78, 0x04 }, /* Extra-weird stuff. Some sort of multiplexor register */ { 0x79, 0x01 }, { 0xc8, 0xf0 }, { 0x79, 0x0f }, { 0xc8, 0x00 }, { 0x79, 0x10 }, { 0xc8, 0x7e }, { 0x79, 0x0a }, { 0xc8, 0x80 }, { 0x79, 0x0b }, { 0xc8, 0x01 }, { 0x79, 0x0c }, { 0xc8, 0x0f }, { 0x79, 0x0d }, { 0xc8, 0x20 }, { 0x79, 0x09 }, { 0xc8, 0x80 }, { 0x79, 0x02 }, { 0xc8, 0xc0 }, { 0x79, 0x03 }, { 0xc8, 0x40 }, { 0x79, 0x05 }, { 0xc8, 0x30 }, { 0x79, 0x26 }, { 0xff, 0xff }, /* END MARKER */ }; void error_led(void){ DDRB |= 32;//make sure led is output while (1){//wait for reset PORTB ^= 32;// toggle led _delay_ms(100); } } void twiStart(void){ TWCR = _BV(TWINT) | _BV(TWSTA) | _BV(TWEN);//send start while (!(TWCR & (1 << TWINT)));//wait for start to be transmitted if ((TWSR & 0xF8) != TW_START) error_led(); } void twiWriteByte(uint8_t DATA, uint8_ttype){ TWDR = DATA; TWCR = _BV(TWINT) | _BV(TWEN); while (!(TWCR & (1 << TWINT))) {} if ((TWSR & 0xF8) != type) error_led(); } void twiAddr(uint8_t addr, uint8_t typeTWI){ TWDR = addr;//send address TWCR = _BV(TWINT) | _BV(TWEN); /* clear interrupt to start transmission */ while ((TWCR &_BV(TWINT)) == 0); /* wait for transmission */ if ((TWSR & 0xF8) != typeTWI) error_led(); } void wrReg(uint8_t reg, uint8_t dat){ //send start condition twiStart(); twiAddr(camAddr_WR, TW_MT_SLA_ACK); twiWriteByte(reg, TW_MT_DATA_ACK); twiWriteByte(dat, TW_MT_DATA_ACK); TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);//send stop _delay_ms(1); } static uint8_t twiRd(uint8_t nack){ if (nack){ TWCR = _BV(TWINT) | _BV(TWEN); while ((TWCR &_BV(TWINT)) == 0); /* wait for transmission */ if ((TWSR & 0xF8) != TW_MR_DATA_NACK) error_led(); return TWDR; } else{ TWCR = _BV(TWINT) | _BV(TWEN) | _BV(TWEA); while ((TWCR &_BV(TWINT)) == 0); /* wait for transmission */ if ((TWSR & 0xF8) != TW_MR_DATA_ACK) error_led(); return TWDR; } } uint8_t rdReg(uint8_t reg){ uint8_t dat; twiStart(); twiAddr(camAddr_WR, TW_MT_SLA_ACK); twiWriteByte(reg, TW_MT_DATA_ACK); TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);//send stop _delay_ms(1); twiStart(); twiAddr(camAddr_RD, TW_MR_SLA_ACK); dat= twiRd(1); TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);//send stop _delay_ms(1); return dat; } void wrSensorRegs8_8(const struct regval_listreglist[]){ uint8_t reg_addr, reg_val; const struct regval_list *next =reglist; while ((reg_addr != 0xff) | (reg_val != 0xff)){ reg_addr = pgm_read_byte(&next->reg_num); reg_val = pgm_read_byte(&next->value); wrReg(reg_addr, reg_val); next++; } } void setColor(void){ wrSensorRegs8_8(yuv422_ov7670); } void setRes(void){ wrReg(REG_COM3, 4); // REG_COM3 enablescaling wrSensorRegs8_8(qvga_ov7670); } void camInit(void){ wrReg(0x12, 0x80); _delay_ms(100); wrSensorRegs8_8(ov7670_default_regs); wrReg(REG_COM10, 32);//PCLK does not toggleon HBLANK. } void arduinoUnoInut(void) { cli();//disable interrupts /* Setup the 8mhz PWM clock *This will be on pin 11*/ DDRB |= (1 << 3);//pin 11 ASSR &= ~(_BV(EXCLK) | _BV(AS2)); TCCR2A = (1 << COM2A0) | (1 << WGM21) | (1 << WGM20); TCCR2B = (1 << WGM22) | (1 << CS20); OCR2A = 0;//(F_CPU)/(2*(X+1)) DDRC &= ~15;//low d0-d3 camera DDRD&= ~252;//d7-d4 and interrupt pins _delay_ms(3000); //set up twi for 100khz TWSR &= ~3;//disable prescaler for TWI TWBR = 72;//set to 100khz //enable serial UBRR0H = 0; UBRR0L = 1;//0 = 2M baud rate. 1 = 1M baud. 3 = 0.5M.7 = 250k 207 is 9600 baud rate. UCSR0A |= 2;//double speed aysnc UCSR0B = (1 << RXEN0) | (1 << TXEN0);//Enable receiver and transmitter UCSR0C = 6;//async 1 stop bit 8bit char no parity bits } void StringPgm(const char * str){ do{ while (!(UCSR0A & (1 << UDRE0)));//wait for byte to transmit UDR0 = pgm_read_byte_near(str); while (!(UCSR0A & (1 << UDRE0)));//wait for byte to transmit } while(pgm_read_byte_near(++str)); } static void captureImg(uint16_t wg, uint16_t hg){ uint16_t y, x; StringPgm(PSTR("*RDY*")); while (!(PIND & 8));//wait for high while ((PIND & 8));//wait for low y= hg; while (y--){ x = wg; //while (!(PIND & 256));//wait for high while (x--){ while ((PIND & 4));//wait for low UDR0 = (PINC & 15) | (PIND & 240); while (!(UCSR0A & (1 << UDRE0)));//wait for byte to transmit while (!(PIND & 4));//wait for high while ((PIND & 4));//wait for low while (!(PIND & 4));//wait for high } // while ((PIND& 256));//wait for low } _delay_ms(100); } void setup(){ arduinoUnoInut(); camInit(); setRes(); setColor(); wrReg(0x11, 10); //Earlier it had the value: wrReg(0x11, 12); New versionworks better for me !!!!} void loop(){ captureImg(320, 240); } |
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