443 lines
10 KiB
C
443 lines
10 KiB
C
#include "sys.h"
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#include "ov2640.h"
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#include "ov2640cfg.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 "stdio.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 STM32F103开发板
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//OV2640 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:2015/4/16
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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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//初始化OV2640
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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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void OV2640_PWDN(uint8_t signal)
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{
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HAL_GPIO_WritePin(GPIOB, GPIO_PIN_15, (GPIO_PinState)signal);
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}
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void OV2640_RST(uint8_t signal)
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{
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HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, (GPIO_PinState)signal);
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}
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uint8_t OV2640_Init(void)
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{
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uint16_t i=0;
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uint16_t reg;
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//设置IO
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GPIO_InitTypeDef GPIO_InitStructure;
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__HAL_RCC_GPIOG_CLK_ENABLE(); //使能GPIOB时钟
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HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13|GPIO_PIN_15, GPIO_PIN_RESET);
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//GPIOF9,F10初始化设置
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GPIO_InitStructure.Pin = GPIO_PIN_13|GPIO_PIN_15;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
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GPIO_InitStructure.Pull = GPIO_PULLUP;//上拉
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HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);//初始<E5889D>
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OV2640_PWDN(0); //POWER ON
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delay_ms(10);
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OV2640_RST(0); //复位OV2640
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delay_ms(10);
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OV2640_RST(1); //结束复位
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SCCB_Init(); //初始化SCCB 的IO口
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SCCB_WR_Reg(OV2640_DSP_RA_DLMT, 0x01); //操作sensor寄存器
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SCCB_WR_Reg(OV2640_SENSOR_COM7, 0x80); //软复位OV2640
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delay_ms(50);
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reg=SCCB_RD_Reg(OV2640_SENSOR_MIDH); //读取厂家ID 高八位
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reg<<=8;
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reg|=SCCB_RD_Reg(OV2640_SENSOR_MIDL); //读取厂家ID 低八位
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printf("OV2640_MID = %#X\n" , reg);
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if(reg!=OV2640_MID)
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{
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printf("MID:%d\r\n",reg);
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return 1;
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}
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reg=SCCB_RD_Reg(OV2640_SENSOR_PIDH); //读取厂家ID 高八位
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reg<<=8;
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reg|=SCCB_RD_Reg(OV2640_SENSOR_PIDL); //读取厂家ID 低八位
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if(reg!=OV2640_PID)
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{
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printf("HID:%d\r\n",reg);
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return 2;
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}
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for(i=0;i<sizeof(ov2640_svga_init_reg_tbl)/2;i++)
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{
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SCCB_WR_Reg(ov2640_svga_init_reg_tbl[i][0],ov2640_svga_init_reg_tbl[i][1]);
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}
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printf("OV2640_init SUCCESS\n");
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return 0x00; //ok
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}
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//OV2640切换为JPEG模式
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void OV2640_JPEG_Mode(void)
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{
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uint16_t i=0;
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//设置:YUV422格式
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for(i=0;i<(sizeof(ov2640_yuv422_reg_tbl)/2);i++)
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{
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SCCB_WR_Reg(ov2640_yuv422_reg_tbl[i][0],ov2640_yuv422_reg_tbl[i][1]);
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}
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//设置:输出JPEG数据
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for(i=0;i<(sizeof(ov2640_jpeg_reg_tbl)/2);i++)
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{
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SCCB_WR_Reg(ov2640_jpeg_reg_tbl[i][0],ov2640_jpeg_reg_tbl[i][1]);
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}
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}
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//OV2640切换为RGB565模式
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void OV2640_RGB565_Mode(void)
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{
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uint16_t i=0;
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//设置:RGB565输出
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for(i=0;i<(sizeof(ov2640_rgb565_reg_tbl)/2);i++)
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{
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SCCB_WR_Reg(ov2640_rgb565_reg_tbl[i][0],ov2640_rgb565_reg_tbl[i][1]);
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}
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printf("OV2640_RGB565 SET!\n");
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}
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//自动曝光设置参数表,支持5个等级
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const static uint8_t OV2640_AUTOEXPOSURE_LEVEL[5][8]=
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{
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{
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0xFF,0x01,
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0x24,0x20,
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0x25,0x18,
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0x26,0x60,
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},
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{
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0xFF,0x01,
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0x24,0x34,
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0x25,0x1c,
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0x26,0x00,
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},
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{
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0xFF,0x01,
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0x24,0x3e,
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0x25,0x38,
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0x26,0x81,
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},
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{
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0xFF,0x01,
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0x24,0x48,
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0x25,0x40,
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0x26,0x81,
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},
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{
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0xFF,0x01,
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0x24,0x58,
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0x25,0x50,
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0x26,0x92,
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},
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};
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//OV2640自动曝光等级设置
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//level:0~4
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void OV2640_Auto_Exposure(uint8_t level)
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{
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uint8_t i;
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uint8_t *p=(uint8_t*)OV2640_AUTOEXPOSURE_LEVEL[level];
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for(i=0;i<4;i++)
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{
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SCCB_WR_Reg(p[i*2],p[i*2+1]);
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}
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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:太阳sunny
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//2,阴天cloudy
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//3,办公室office
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//4,家里home
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void OV2640_Light_Mode(uint8_t mode)
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{
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uint8_t regccval=0X5E;//Sunny
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uint8_t regcdval=0X41;
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uint8_t regceval=0X54;
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switch(mode)
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{
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case 0://auto
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SCCB_WR_Reg(0XFF,0X00);
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SCCB_WR_Reg(0XC7,0X10);//AWB ON
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return;
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case 2://cloudy
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regccval=0X65;
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regcdval=0X41;
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regceval=0X4F;
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break;
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case 3://office
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regccval=0X52;
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regcdval=0X41;
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regceval=0X66;
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break;
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case 4://home
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regccval=0X42;
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regcdval=0X3F;
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regceval=0X71;
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break;
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}
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SCCB_WR_Reg(0XFF,0X00);
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SCCB_WR_Reg(0XC7,0X40); //AWB OFF
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SCCB_WR_Reg(0XCC,regccval);
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SCCB_WR_Reg(0XCD,regcdval);
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SCCB_WR_Reg(0XCE,regceval);
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}
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//色度设置
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//0:-2
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//1:-1
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//2,0
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//3,+1
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//4,+2
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void OV2640_Color_Saturation(uint8_t sat)
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{
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uint8_t reg7dval=((sat+2)<<4)|0X08;
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SCCB_WR_Reg(0XFF,0X00);
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SCCB_WR_Reg(0X7C,0X00);
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SCCB_WR_Reg(0X7D,0X02);
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SCCB_WR_Reg(0X7C,0X03);
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SCCB_WR_Reg(0X7D,reg7dval);
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SCCB_WR_Reg(0X7D,reg7dval);
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}
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//亮度设置
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//0:(0X00)-2
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//1:(0X10)-1
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//2,(0X20) 0
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//3,(0X30)+1
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//4,(0X40)+2
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void OV2640_Brightness(uint8_t bright)
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{
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SCCB_WR_Reg(0xff, 0x00);
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SCCB_WR_Reg(0x7c, 0x00);
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SCCB_WR_Reg(0x7d, 0x04);
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SCCB_WR_Reg(0x7c, 0x09);
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SCCB_WR_Reg(0x7d, bright<<4);
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SCCB_WR_Reg(0x7d, 0x00);
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}
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//对比度设置
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//0:-2
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//1:-1
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//2,0
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//3,+1
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//4,+2
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void OV2640_Contrast(uint8_t contrast)
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{
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uint8_t reg7d0val=0X20;//默认为普通模式
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uint8_t reg7d1val=0X20;
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switch(contrast)
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{
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case 0://-2
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reg7d0val=0X18;
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reg7d1val=0X34;
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break;
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case 1://-1
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reg7d0val=0X1C;
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reg7d1val=0X2A;
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break;
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case 3://1
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reg7d0val=0X24;
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reg7d1val=0X16;
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break;
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case 4://2
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reg7d0val=0X28;
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reg7d1val=0X0C;
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break;
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}
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SCCB_WR_Reg(0xff,0x00);
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SCCB_WR_Reg(0x7c,0x00);
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SCCB_WR_Reg(0x7d,0x04);
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SCCB_WR_Reg(0x7c,0x07);
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SCCB_WR_Reg(0x7d,0x20);
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SCCB_WR_Reg(0x7d,reg7d0val);
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SCCB_WR_Reg(0x7d,reg7d1val);
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SCCB_WR_Reg(0x7d,0x06);
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}
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//特效设置
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//0:普通模式
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//1,负片
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//2,黑白
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//3,偏红色
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//4,偏绿色
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//5,偏蓝色
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//6,复古
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void OV2640_Special_Effects(uint8_t eft)
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{
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uint8_t reg7d0val=0X00;//默认为普通模式
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uint8_t reg7d1val=0X80;
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uint8_t reg7d2val=0X80;
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switch(eft)
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{
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case 1://负片
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reg7d0val=0X40;
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break;
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case 2://黑白
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reg7d0val=0X18;
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break;
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case 3://偏红色
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reg7d0val=0X18;
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reg7d1val=0X40;
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reg7d2val=0XC0;
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break;
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case 4://偏绿色
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reg7d0val=0X18;
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reg7d1val=0X40;
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reg7d2val=0X40;
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break;
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case 5://偏蓝色
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reg7d0val=0X18;
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reg7d1val=0XA0;
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reg7d2val=0X40;
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break;
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case 6://复古
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reg7d0val=0X18;
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reg7d1val=0X40;
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reg7d2val=0XA6;
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break;
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}
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SCCB_WR_Reg(0xff,0x00);
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SCCB_WR_Reg(0x7c,0x00);
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SCCB_WR_Reg(0x7d,reg7d0val);
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SCCB_WR_Reg(0x7c,0x05);
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SCCB_WR_Reg(0x7d,reg7d1val);
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SCCB_WR_Reg(0x7d,reg7d2val);
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}
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//彩条测试
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//sw:0,关闭彩条
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// 1,开启彩条(注意OV2640的彩条是叠加在图像上面的)
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void OV2640_Color_Bar(uint8_t sw)
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{
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uint8_t reg;
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SCCB_WR_Reg(0XFF,0X01);
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reg=SCCB_RD_Reg(0X12);
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reg&=~(1<<1);
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if(sw)reg|=1<<1;
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SCCB_WR_Reg(0X12,reg);
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}
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//设置图像输出窗口
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//sx,sy,起始地址
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//width,height:宽度(对应:horizontal)和高度(对应:vertical)
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void OV2640_Window_Set(uint16_t sx,uint16_t sy,uint16_t width,uint16_t height)
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{
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uint16_t endx;
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uint16_t endy;
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uint8_t temp;
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endx=sx+width/2; //V*2
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endy=sy+height/2;
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SCCB_WR_Reg(0XFF,0X01);
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temp=SCCB_RD_Reg(0X03); //读取Vref之前的值
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temp&=0XF0;
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temp|=((endy&0X03)<<2)|(sy&0X03);
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SCCB_WR_Reg(0X03,temp); //设置Vref的start和end的最低2位
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SCCB_WR_Reg(0X19,sy>>2); //设置Vref的start高8位
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SCCB_WR_Reg(0X1A,endy>>2); //设置Vref的end的高8位
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temp=SCCB_RD_Reg(0X32); //读取Href之前的值
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temp&=0XC0;
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temp|=((endx&0X07)<<3)|(sx&0X07);
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SCCB_WR_Reg(0X32,temp); //设置Href的start和end的最低3位
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SCCB_WR_Reg(0X17,sx>>3); //设置Href的start高8位
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SCCB_WR_Reg(0X18,endx>>3); //设置Href的end的高8位
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}
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//设置图像输出大小
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//OV2640输出图像的大小(分辨率),完全由改函数确定
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//width,height:宽度(对应:horizontal)和高度(对应:vertical),width和height必须是4的倍数
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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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uint8_t OV2640_OutSize_Set(uint16_t width,uint16_t height)
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{
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uint16_t outh;
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uint16_t outw;
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uint8_t temp;
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if(width%4)return 1;
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if(height%4)return 2;
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outw=width/4;
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outh=height/4;
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SCCB_WR_Reg(0XFF,0X00);
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SCCB_WR_Reg(0XE0,0X04);
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SCCB_WR_Reg(0X5A,outw&0XFF); //设置OUTW的低八位
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SCCB_WR_Reg(0X5B,outh&0XFF); //设置OUTH的低八位
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temp=(outw>>8)&0X03;
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temp|=(outh>>6)&0X04;
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SCCB_WR_Reg(0X5C,temp); //设置OUTH/OUTW的高位
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SCCB_WR_Reg(0XE0,0X00);
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return 0;
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}
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//设置图像开窗大小
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//由:OV2640_ImageSize_Set确定传感器输出分辨率从大小.
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//该函数则在这个范围上面进行开窗,用于OV2640_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OV2640_OutSize_Set函数的宽度和高度
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// OV2640_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),width和height必须是4的倍数
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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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uint8_t OV2640_ImageWin_Set(uint16_t offx,uint16_t offy,uint16_t width,uint16_t height)
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{
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uint16_t hsize;
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uint16_t vsize;
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uint8_t temp;
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if(width%4)return 1;
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if(height%4)return 2;
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hsize=width/4;
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vsize=height/4;
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SCCB_WR_Reg(0XFF,0X00);
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SCCB_WR_Reg(0XE0,0X04);
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SCCB_WR_Reg(0X51,hsize&0XFF); //设置H_SIZE的低八位
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SCCB_WR_Reg(0X52,vsize&0XFF); //设置V_SIZE的低八位
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SCCB_WR_Reg(0X53,offx&0XFF); //设置offx的低八位
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SCCB_WR_Reg(0X54,offy&0XFF); //设置offy的低八位
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temp=(vsize>>1)&0X80;
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temp|=(offy>>4)&0X70;
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temp|=(hsize>>5)&0X08;
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temp|=(offx>>8)&0X07;
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SCCB_WR_Reg(0X55,temp); //设置H_SIZE/V_SIZE/OFFX,OFFY的高位
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SCCB_WR_Reg(0X57,(hsize>>2)&0X80); //设置H_SIZE/V_SIZE/OFFX,OFFY的高位
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SCCB_WR_Reg(0XE0,0X00);
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return 0;
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}
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//该函数设置图像尺寸大小,也就是所选格式的输出分辨率
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//UXGA:1600*1200,SVGA:800*600,CIF:352*288
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//width,height:图像宽度和图像高度
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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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uint8_t OV2640_ImageSize_Set(uint16_t width,uint16_t height)
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{
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uint8_t temp;
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SCCB_WR_Reg(0XFF,0X00);
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SCCB_WR_Reg(0XE0,0X04);
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SCCB_WR_Reg(0XC0,(width)>>3&0XFF); //设置HSIZE的10:3位
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SCCB_WR_Reg(0XC1,(height)>>3&0XFF); //设置VSIZE的10:3位
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temp=(width&0X07)<<3;
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temp|=height&0X07;
|
||
temp|=(width>>4)&0X80;
|
||
SCCB_WR_Reg(0X8C,temp);
|
||
SCCB_WR_Reg(0XE0,0X00);
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|