444 lines
11 KiB
C
444 lines
11 KiB
C
#include "sys.h"
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#include "ov5640.h"
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#include "ov5640cfg.h"
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#include "ov5640af.h"
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#include "timer.h"
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#include "delay.h"
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#include "usart.h"
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#include "sccb.h"
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#include "pcf8574.h"
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#include "ltdc.h"
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//////////////////////////////////////////////////////////////////////////////////
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//本程序只供学习使用，未经作者许可，不得用于其它任何用途
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//ALIENTEK STM32开发板
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//OV5640 驱动代码
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//正点原子@ALIENTEK
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//技术论坛:www.openedv.com
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//创建日期:2016/1/6
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//版本：V1.0
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//版权所有，盗版必究。
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//Copyright(C) 广州市星翼电子科技有限公司 2014-2024
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//All rights reserved
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//////////////////////////////////////////////////////////////////////////////////
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//OV5640写寄存器
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//返回值:0,成功;1,失败.
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u8 OV5640_WR_Reg(u16 reg,u8 data)
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{
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u8 res=0;
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SCCB_Start(); //启动SCCB传输
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if(SCCB_WR_Byte(OV5640_ADDR))res=1; //写器件ID
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if(SCCB_WR_Byte(reg>>8))res=1; //写寄存器高8位地址
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if(SCCB_WR_Byte(reg))res=1; //写寄存器低8位地址
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if(SCCB_WR_Byte(data))res=1; //写数据
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SCCB_Stop();
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return res;
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}
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//OV5640读寄存器
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//返回值:读到的寄存器值
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u8 OV5640_RD_Reg(u16 reg)
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{
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u8 val=0;
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SCCB_Start(); //启动SCCB传输
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SCCB_WR_Byte(OV5640_ADDR); //写器件ID
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SCCB_WR_Byte(reg>>8); //写寄存器高8位地址
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SCCB_WR_Byte(reg); //写寄存器低8位地址
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SCCB_Stop();
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//设置寄存器地址后，才是读
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SCCB_Start();
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SCCB_WR_Byte(OV5640_ADDR|0X01);//发送读命令
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val=SCCB_RD_Byte(); //读取数据
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SCCB_No_Ack();
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SCCB_Stop();
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return val;
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}
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//设置摄像头模块PWDN脚的状态
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//sta:0,PWDN=0,上电.
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// 1,PWDN=1,掉电
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void OV5640_PWDN_Set(u8 sta)
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{
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PCF8574_WriteBit(DCMI_PWDN_IO,sta);
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}
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//初始化OV5640
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//配置完以后,默认输出是1600*1200尺寸的图片!!
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//返回值:0,成功
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// 其他,错误代码
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u8 OV5640_Init(void)
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{
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u16 i=0;
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u16 reg;
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//设置IO
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GPIO_InitTypeDef GPIO_Initure;
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__HAL_RCC_GPIOG_CLK_ENABLE(); //开启GPIOA时钟
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GPIO_Initure.Pin=GPIO_PIN_12; //PG12
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GPIO_Initure.Mode=GPIO_MODE_OUTPUT_PP; //推挽输出
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GPIO_Initure.Pull=GPIO_PULLUP; //上拉
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GPIO_Initure.Speed=GPIO_SPEED_FREQ_VERY_HIGH; //高速
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HAL_GPIO_Init(GPIOG,&GPIO_Initure); //初始化
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PCF8574_Init(); //初始化PCF8574
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OV5640_RST(0); //必须先拉低OV5640的RST脚,再上电
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delay_ms(20);
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OV5640_PWDN_Set(0); //POWER ON
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delay_ms(5);
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OV5640_RST(1); //结束复位
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delay_ms(20);
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SCCB_Init(); //初始化SCCB 的IO口
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delay_ms(5);
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reg=OV5640_RD_Reg(OV5640_CHIPIDH); //读取ID 高八位
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reg<<=8;
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reg|=OV5640_RD_Reg(OV5640_CHIPIDL); //读取ID 低八位
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if(reg!=OV5640_ID)
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{
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printf("ID:%d\r\n",reg);
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return 1;
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}
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OV5640_WR_Reg(0x3103,0X11); //system clock from pad, bit[1]
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OV5640_WR_Reg(0X3008,0X82); //软复位
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delay_ms(10);
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//初始化 OV5640,采用SXGA分辨率(1600*1200)
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for(i=0;i<sizeof(ov5640_uxga_init_reg_tbl)/4;i++)
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{
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OV5640_WR_Reg(ov5640_uxga_init_reg_tbl[i][0],ov5640_uxga_init_reg_tbl[i][1]);
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}
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//检查闪光灯是否正常
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OV5640_Flash_Ctrl(1);//打开闪光灯
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delay_ms(50);
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OV5640_Flash_Ctrl(0);//关闭闪光灯
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return 0x00; //ok
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}
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//OV5640切换为JPEG模式
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void OV5640_JPEG_Mode(void)
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{
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u16 i=0;
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//设置:输出JPEG数据
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for(i=0;i<(sizeof(OV5640_jpeg_reg_tbl)/4);i++)
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{
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OV5640_WR_Reg(OV5640_jpeg_reg_tbl[i][0],OV5640_jpeg_reg_tbl[i][1]);
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}
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}
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//OV5640切换为RGB565模式
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void OV5640_RGB565_Mode(void)
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{
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u16 i=0;
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//设置:RGB565输出
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for(i=0;i<(sizeof(ov5640_rgb565_reg_tbl)/4);i++)
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{
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OV5640_WR_Reg(ov5640_rgb565_reg_tbl[i][0],ov5640_rgb565_reg_tbl[i][1]);
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}
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if(lcdltdc.pwidth!=0)OV5640_WR_Reg(0X3821,0X06);//RGB屏,水平镜像
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}
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//灯光模式参数表,支持5个模式
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const static u8 OV5640_LIGHTMODE_TBL[5][7]=
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{
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0x04,0X00,0X04,0X00,0X04,0X00,0X00,//Auto,自动
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0x06,0X1C,0X04,0X00,0X04,0XF3,0X01,//Sunny,日光
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0x05,0X48,0X04,0X00,0X07,0XCF,0X01,//Office,办公室
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0x06,0X48,0X04,0X00,0X04,0XD3,0X01,//Cloudy,阴天
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0x04,0X10,0X04,0X00,0X08,0X40,0X01,//Home,室内
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};
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//白平衡设置
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//0:自动
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//1:日光sunny
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//2,办公室office
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//3,阴天cloudy
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//4,家里home
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void OV5640_Light_Mode(u8 mode)
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{
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u8 i;
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OV5640_WR_Reg(0x3212,0x03); //start group 3
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for(i=0;i<7;i++)OV5640_WR_Reg(0x3400+i,OV5640_LIGHTMODE_TBL[mode][i]);//设置饱和度
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OV5640_WR_Reg(0x3212,0x13); //end group 3
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OV5640_WR_Reg(0x3212,0xa3); //launch group 3
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}
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//色彩饱和度设置参数表,支持7个等级
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const static u8 OV5640_SATURATION_TBL[7][6]=
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{
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0X0C,0x30,0X3D,0X3E,0X3D,0X01,//-3
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0X10,0x3D,0X4D,0X4E,0X4D,0X01,//-2
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0X15,0x52,0X66,0X68,0X66,0X02,//-1
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0X1A,0x66,0X80,0X82,0X80,0X02,//+0
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0X1F,0x7A,0X9A,0X9C,0X9A,0X02,//+1
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0X24,0x8F,0XB3,0XB6,0XB3,0X03,//+2
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0X2B,0xAB,0XD6,0XDA,0XD6,0X04,//+3
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};
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//色度设置
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//sat:0~6,代表饱和度-3~3.
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void OV5640_Color_Saturation(u8 sat)
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{
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u8 i;
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OV5640_WR_Reg(0x3212,0x03); //start group 3
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OV5640_WR_Reg(0x5381,0x1c);
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OV5640_WR_Reg(0x5382,0x5a);
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OV5640_WR_Reg(0x5383,0x06);
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for(i=0;i<6;i++)OV5640_WR_Reg(0x5384+i,OV5640_SATURATION_TBL[sat][i]);//设置饱和度
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OV5640_WR_Reg(0x538b, 0x98);
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OV5640_WR_Reg(0x538a, 0x01);
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OV5640_WR_Reg(0x3212, 0x13); //end group 3
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OV5640_WR_Reg(0x3212, 0xa3); //launch group 3
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}
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//亮度设置
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//bright:0~8,代表亮度-4~4.
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void OV5640_Brightness(u8 bright)
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{
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u8 brtval;
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if(bright<4)brtval=4-bright;
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else brtval=bright-4;
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OV5640_WR_Reg(0x3212,0x03); //start group 3
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OV5640_WR_Reg(0x5587,brtval<<4);
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if(bright<4)OV5640_WR_Reg(0x5588,0x09);
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else OV5640_WR_Reg(0x5588,0x01);
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OV5640_WR_Reg(0x3212,0x13); //end group 3
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OV5640_WR_Reg(0x3212,0xa3); //launch group 3
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}
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//对比度设置
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//contrast:0~6,代表亮度-3~3.
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void OV5640_Contrast(u8 contrast)
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{
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u8 reg0val=0X00;//contrast=3,默认对比度
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u8 reg1val=0X20;
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switch(contrast)
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{
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case 0://-3
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reg1val=reg0val=0X14;
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break;
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case 1://-2
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reg1val=reg0val=0X18;
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break;
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case 2://-1
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reg1val=reg0val=0X1C;
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break;
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case 4://1
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reg0val=0X10;
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reg1val=0X24;
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break;
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case 5://2
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reg0val=0X18;
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reg1val=0X28;
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break;
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case 6://3
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reg0val=0X1C;
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reg1val=0X2C;
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break;
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}
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OV5640_WR_Reg(0x3212,0x03); //start group 3
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OV5640_WR_Reg(0x5585,reg0val);
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OV5640_WR_Reg(0x5586,reg1val);
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OV5640_WR_Reg(0x3212,0x13); //end group 3
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OV5640_WR_Reg(0x3212,0xa3); //launch group 3
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}
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//锐度设置
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//sharp:0~33,0,关闭;33,auto;其他值,锐度范围.
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void OV5640_Sharpness(u8 sharp)
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{
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if(sharp<33)//设置锐度值
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{
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OV5640_WR_Reg(0x5308,0x65);
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OV5640_WR_Reg(0x5302,sharp);
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}else //自动锐度
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{
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OV5640_WR_Reg(0x5308,0x25);
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OV5640_WR_Reg(0x5300,0x08);
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OV5640_WR_Reg(0x5301,0x30);
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OV5640_WR_Reg(0x5302,0x10);
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OV5640_WR_Reg(0x5303,0x00);
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OV5640_WR_Reg(0x5309,0x08);
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OV5640_WR_Reg(0x530a,0x30);
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OV5640_WR_Reg(0x530b,0x04);
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OV5640_WR_Reg(0x530c,0x06);
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}
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}
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//特效设置参数表,支持7个特效
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const static u8 OV5640_EFFECTS_TBL[7][3]=
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{
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0X06,0x40,0X10,//正常
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0X1E,0xA0,0X40,//冷色
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0X1E,0x80,0XC0,//暖色
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0X1E,0x80,0X80,//黑白
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0X1E,0x40,0XA0,//泛黄
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0X40,0x40,0X10,//反色
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0X1E,0x60,0X60,//偏绿
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};
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//特效设置
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//0:正常
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//1,冷色
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//2,暖色
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//3,黑白
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//4,偏黄
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//5,反色
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//6,偏绿
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void OV5640_Special_Effects(u8 eft)
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{
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OV5640_WR_Reg(0x3212,0x03); //start group 3
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OV5640_WR_Reg(0x5580,OV5640_EFFECTS_TBL[eft][0]);
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OV5640_WR_Reg(0x5583,OV5640_EFFECTS_TBL[eft][1]);// sat U
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OV5640_WR_Reg(0x5584,OV5640_EFFECTS_TBL[eft][2]);// sat V
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OV5640_WR_Reg(0x5003,0x08);
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OV5640_WR_Reg(0x3212,0x13); //end group 3
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OV5640_WR_Reg(0x3212,0xa3); //launch group 3
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}
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//测试序列
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//mode:0,关闭
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// 1,彩条
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// 2,色块
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void OV5640_Test_Pattern(u8 mode)
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{
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if(mode==0)OV5640_WR_Reg(0X503D,0X00);
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else if(mode==1)OV5640_WR_Reg(0X503D,0X80);
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else if(mode==2)OV5640_WR_Reg(0X503D,0X82);
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}
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//闪光灯控制
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//mode:0,关闭
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// 1,打开
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void OV5640_Flash_Ctrl(u8 sw)
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{
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OV5640_WR_Reg(0x3016,0X02);
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OV5640_WR_Reg(0x301C,0X02);
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if(sw)OV5640_WR_Reg(0X3019,0X02);
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else OV5640_WR_Reg(0X3019,0X00);
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}
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//设置图像输出大小
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//OV5640输出图像的大小(分辨率),完全由该函数确定
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//offx,offy,为输出图像在OV5640_ImageWin_Set设定窗口(假设长宽为xsize和ysize)上的偏移
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//由于开启了scale功能,用于输出的图像窗口为:xsize-2*offx,ysize-2*offy
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//width,height:实际输出图像的宽度和高度
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//实际输出(width,height),是在xsize-2*offx,ysize-2*offy的基础上进行缩放处理.
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//一般设置offx和offy的值为16和4,更小也是可以,不过默认是16和4
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//返回值:0,设置成功
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// 其他,设置失败
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u8 OV5640_OutSize_Set(u16 offx,u16 offy,u16 width,u16 height)
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{
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OV5640_WR_Reg(0X3212,0X03); //开始组3
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//以下设置决定实际输出尺寸(带缩放)
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OV5640_WR_Reg(0x3808,width>>8); //设置实际输出宽度高字节
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OV5640_WR_Reg(0x3809,width&0xff);//设置实际输出宽度低字节
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OV5640_WR_Reg(0x380a,height>>8);//设置实际输出高度高字节
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OV5640_WR_Reg(0x380b,height&0xff);//设置实际输出高度低字节
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//以下设置决定输出尺寸在ISP上面的取图范围
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//范围:xsize-2*offx,ysize-2*offy
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OV5640_WR_Reg(0x3810,offx>>8); //设置X offset高字节
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OV5640_WR_Reg(0x3811,offx&0xff);//设置X offset低字节
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OV5640_WR_Reg(0x3812,offy>>8); //设置Y offset高字节
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OV5640_WR_Reg(0x3813,offy&0xff);//设置Y offset低字节
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OV5640_WR_Reg(0X3212,0X13); //结束组3
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OV5640_WR_Reg(0X3212,0Xa3); //启用组3设置
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return 0;
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}
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//设置图像开窗大小(ISP大小),非必要,一般无需调用此函数
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//在整个传感器上面开窗(最大2592*1944),用于OV5640_OutSize_Set的输出
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//注意:本函数的宽度和高度,必须大于等于OV5640_OutSize_Set函数的宽度和高度
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// OV5640_OutSize_Set设置的宽度和高度,根据本函数设置的宽度和高度,由DSP
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// 自动计算缩放比例,输出给外部设备.
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//width,height:宽度(对应:horizontal)和高度(对应:vertical)
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//返回值:0,设置成功
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// 其他,设置失败
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u8 OV5640_ImageWin_Set(u16 offx,u16 offy,u16 width,u16 height)
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{
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u16 xst,yst,xend,yend;
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xst=offx;
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yst=offy;
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xend=offx+width-1;
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yend=offy+height-1;
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OV5640_WR_Reg(0X3212,0X03); //开始组3
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OV5640_WR_Reg(0X3800,xst>>8);
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OV5640_WR_Reg(0X3801,xst&0XFF);
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OV5640_WR_Reg(0X3802,yst>>8);
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OV5640_WR_Reg(0X3803,yst&0XFF);
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OV5640_WR_Reg(0X3804,xend>>8);
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OV5640_WR_Reg(0X3805,xend&0XFF);
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OV5640_WR_Reg(0X3806,yend>>8);
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OV5640_WR_Reg(0X3807,yend&0XFF);
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OV5640_WR_Reg(0X3212,0X13); //结束组3
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OV5640_WR_Reg(0X3212,0Xa3); //启用组3设置
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return 0;
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}
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//初始化自动对焦
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//返回值:0,成功;1,失败.
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u8 OV5640_Focus_Init(void)
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{
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u16 i;
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u16 addr=0x8000;
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u8 state=0x8F;
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OV5640_WR_Reg(0x3000, 0x20); //reset MCU
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for(i=0;i<sizeof(OV5640_AF_Config);i++) //发送配置数组
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{
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OV5640_WR_Reg(addr,OV5640_AF_Config[i]);
|
||
addr++;
|
||
}
|
||
OV5640_WR_Reg(0x3022,0x00);
|
||
OV5640_WR_Reg(0x3023,0x00);
|
||
OV5640_WR_Reg(0x3024,0x00);
|
||
OV5640_WR_Reg(0x3025,0x00);
|
||
OV5640_WR_Reg(0x3026,0x00);
|
||
OV5640_WR_Reg(0x3027,0x00);
|
||
OV5640_WR_Reg(0x3028,0x00);
|
||
OV5640_WR_Reg(0x3029,0x7f);
|
||
OV5640_WR_Reg(0x3000,0x00);
|
||
i=0;
|
||
do
|
||
{
|
||
state=OV5640_RD_Reg(0x3029);
|
||
delay_ms(5);
|
||
i++;
|
||
if(i>1000)return 1;
|
||
}while(state!=0x70);
|
||
return 0;
|
||
}
|
||
//执行一次自动对焦
|
||
//返回值:0,成功;1,失败.
|
||
u8 OV5640_Focus_Single(void)
|
||
{
|
||
u8 temp;
|
||
u16 retry=0;
|
||
OV5640_WR_Reg(0x3022,0x03); //触发一次自动对焦
|
||
while(1)
|
||
{
|
||
retry++;
|
||
temp=OV5640_RD_Reg(0x3029); //检查对焦完成状态
|
||
if(temp==0x10)break; // focus completed
|
||
delay_ms(5);
|
||
if(retry>1000)return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
//持续自动对焦,当失焦后,会自动继续对焦
|
||
//返回值:0,成功;其他,失败.
|
||
u8 OV5640_Focus_Constant(void)
|
||
{
|
||
u8 temp=0;
|
||
u16 retry=0;
|
||
OV5640_WR_Reg(0x3023,0x01);
|
||
OV5640_WR_Reg(0x3022,0x08);//发送IDLE指令
|
||
do
|
||
{
|
||
temp=OV5640_RD_Reg(0x3023);
|
||
retry++;
|
||
if(retry>1000)return 2;
|
||
delay_ms(5);
|
||
} while(temp!=0x00);
|
||
OV5640_WR_Reg(0x3023,0x01);
|
||
OV5640_WR_Reg(0x3022,0x04);//发送持续对焦指令
|
||
retry=0;
|
||
do
|
||
{
|
||
temp=OV5640_RD_Reg(0x3023);
|
||
retry++;
|
||
if(retry>1000)return 2;
|
||
delay_ms(5);
|
||
}while(temp!=0x00);//0,对焦完成;1:正在对焦
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
|