/* * Copyright (c) 2021 HPMicro * * SPDX-License-Identifier: BSD-3-Clause * */ #ifndef HPM_OV7725_H #define HPM_OV7725_H #include "hpm_common.h" #include "hpm_camera_config.h" #define OV7725_ACTIVE_IMAGE_WIDTH (480U) #define OV7725_ACTIVE_IMAGE_HEIGHT (480U) #define OV7725_I2C_ADDR (0x21U) #define OV7725_CHIP_ID_HIGH_BYTE_ADDR (0x0A) #define OV7725_CHIP_ID_HIGH_BYTE_VALUE (0x77) #define OV7725_CHIP_ID_LOW_BYTE_ADDR (0x0B) #define OV7725_CHIP_ID_LOW_BYTE_VALUE (0x21) /* need to check */ #define OV7725_RST_ACTIVE 0 #define OV7725_RST_INACTIVE 1 #define OV7725_PWDN_ACTIVE 1 #define OV7725_PWDN_INACTIVE 0 #define GAIN (0x00U) /* AGC – Gain control gain setting */ #define BLUE (0x01U) /* AWB – Blue channel gain setting */ #define RED (0x02U) /* AWB – Red channel gain setting */ #define GREEN (0x03U) /* AWB – Green channel gain setting */ #define BAVG (0x05U) /* U/B Average Level */ #define GAVG (0x06U) /* Y/Gb Average Level */ #define RAVG (0x07U) /* V/R Average Level */ #define AECH (0x08U) /* Exposure Value – AEC MSBs */ #define COM2 (0x09U) /* Common Control 2 */ #define COM2_SOFT_SLEEP (0x10U) /* Soft sleep mode */ #define COM2_OUT_DRIVE_1x (0x00U) /* Output drive capability 1x */ #define COM2_OUT_DRIVE_2x (0x01U) /* Output drive capability 2x */ #define COM2_OUT_DRIVE_3x (0x02U) /* Output drive capability 3x */ #define COM2_OUT_DRIVE_4x (0x03U) /* Output drive capability 4x */ #define PID (0x0AU) /* Product ID Number MSB */ #define VER (0x0BU) /* Product ID Number LSB */ #define COM3 (0x0CU) /* Common Control 3 */ #define COM3_VFLIP (0x80U) /* Vertical flip image ON/OFF selection */ #define COM3_MIRROR (0x40U) /* Horizontal mirror image ON/OFF selection */ #define COM3_SWAP_BR (0x20U) /* Swap B/R output sequence in RGB output mode */ #define COM3_SWAP_YUV (0x10U) /* Swap Y/UV output sequence in YUV output mode */ #define COM3_SWAP_MSB (0x08U) /* Swap output MSB/LSB */ #define COM3_TRI_CLOCK (0x04U) /* Tri-state option for output clock at power-down period */ #define COM3_TRI_DATA (0x02U) /* Tri-state option for output data at power-down period */ #define COM3_COLOR_BAR (0x01U) /* Sensor color bar test pattern output enable */ #define COM4 (0x0DU) /* Common Control 4 */ #define COM4_PLL_BYPASS (0x00U) /* Bypass PLL */ #define COM4_PLL_4x (0x40U) /* PLL frequency 4x */ #define COM4_PLL_6x (0x80U) /* PLL frequency 6x */ #define COM4_PLL_8x (0xc0U) /* PLL frequency 8x */ #define COM4_AEC_FULL (0x00U) /* AEC evaluate full window */ #define COM4_AEC_1_2 (0x10U) /* AEC evaluate 1/2 window */ #define COM4_AEC_1_4 (0x20U) /* AEC evaluate 1/4 window */ #define COM4_AEC_2_3 (0x30U) /* AEC evaluate 2/3 window */ #define COM5 (0x0EU) /* Common Control 5 */ #define COM5_AFR (0x80U) /* Auto frame rate control ON/OFF selection (night mode) */ #define COM5_AFR_SPEED (0x40U) /* Auto frame rate control speed selection */ #define COM5_AFR_0 (0x00U) /* No reduction of frame rate */ #define COM5_AFR_1_2 (0x10U) /* Max reduction to 1/2 frame rate */ #define COM5_AFR_1_4 (0x20U) /* Max reduction to 1/4 frame rate */ #define COM5_AFR_1_8 (0x30U) /* Max reduction to 1/8 frame rate */ #define COM5_AFR_4x (0x04U) /* Add frame when AGC reaches 4x gain */ #define COM5_AFR_8x (0x08U) /* Add frame when AGC reaches 8x gain */ #define COM5_AFR_16x (0x0cU) /* Add frame when AGC reaches 16x gain */ #define COM5_AEC_NO_LIMIT (0x01U) /* No limit to AEC increase step */ #define COM6 (0x0FU) /* Common Control 6 */ #define COM6_AUTO_WINDOW (0x01U) /* Auto window setting ON/OFF selection when format changes */ #define AEC (0x10U) /* AEC[7:0] (see register AECH for AEC[15:8]) */ #define CLKRC (0x11U) /* Internal Clock */ #define COM7 (0x12U) /* Common Control 7 */ #define COM7_RESET (0x80U) /* SCCB Register Reset */ #define COM7_RES_VGA (0x00U) /* Resolution VGA */ #define COM7_RES_QVGA (0x40U) /* Resolution QVGA */ #define COM7_BT656 (0x20U) /* BT.656 protocol ON/OFF */ #define COM7_SENSOR_RAW (0x10U) /* Sensor RAW */ #define COM7_FMT_GBR422 (0x02U) /* RGB output format GBR422 */ #define COM7_FMT_RGB565 (0x06U) /* RGB output format RGB565 */ #define COM7_FMT_RGB555 (0x0AU) /* RGB output format RGB555 */ #define COM7_FMT_RGB444 (0x0EU) /* RGB output format RGB444 */ #define COM7_FMT_YUV (0x00U) /* Output format YUV */ #define COM7_FMT_P_BAYER (0x01U) /* Output format Processed Bayer RAW */ #define COM7_FMT_R_BAYER (0x03U) /* Output format Bayer RAW */ #define COM8 (0x13U) /* Common Control 8 */ #define COM8_FAST_AUTO (0x80U) /* Enable fast AGC/AEC algorithm */ #define COM8_STEP_VSYNC (0x00U) /* AEC - Step size limited to vertical blank */ #define COM8_STEP_UNLIMIT (0x40U) /* AEC - Step size unlimited step size */ #define COM8_BANDF_EN (0x20U) /* Banding filter ON/OFF */ #define COM8_AEC_BANDF (0x10U) /* Enable AEC below banding value */ #define COM8_AEC_FINE_EN (0x08U) /* Fine AEC ON/OFF control */ #define COM8_AGC_EN (0x04U) /* AGC Enable */ #define COM8_AWB_EN (0x02U) /* AWB Enable */ #define COM8_AEC_EN (0x01U) /* AEC Enable */ #define COM9 (0x14U) /* Common Control 9 */ #define COM9_HISTO_AVG (0x80U) /* Histogram or average based AEC/AGC selection */ #define COM9_AGC_GAIN_2x (0x00U) /* Automatic Gain Ceiling 2x */ #define COM9_AGC_GAIN_4x (0x10U) /* Automatic Gain Ceiling 4x */ #define COM9_AGC_GAIN_8x (0x20U) /* Automatic Gain Ceiling 8x */ #define COM9_AGC_GAIN_16x (0x30U) /* Automatic Gain Ceiling 16x */ #define COM9_AGC_GAIN_32x (0x40U) /* Automatic Gain Ceiling 32x */ #define COM9_DROP_VSYNC (0x04U) /* Drop VSYNC output of corrupt frame */ #define COM9_DROP_HREF (0x02U) /* Drop HREF output of corrupt frame */ #define COM10 (0x15U) /* Common Control 10 */ #define COM10_NEGATIVE (0x80U) /* Output negative data */ #define COM10_HSYNC_EN (0x40U) /* HREF changes to HSYNC */ #define COM10_PCLK_FREE (0x00U) /* PCLK output option: free running PCLK */ #define COM10_PCLK_MASK (0x20U) /* PCLK output option: masked during horizontal blank */ #define COM10_PCLK_REV (0x10U) /* PCLK reverse */ #define COM10_HREF_REV (0x08U) /* HREF reverse */ #define COM10_VSYNC_FALLING (0x00U) /* VSYNC changes on falling edge of PCLK */ #define COM10_VSYNC_RISING (0x04U) /* VSYNC changes on rising edge of PCLK */ #define COM10_VSYNC_NEG (0x02U) /* VSYNC negative */ #define COM10_OUT_RANGE_8 (0x01U) /* Output data range: Full range */ #define COM10_OUT_RANGE_10 (0x00U) /* Output data range: Data from [10] to [F0] (8 MSBs) */ #define REG16 (0x16U) /* Register 16 */ #define REG16_BIT_SHIFT (0x80U) /* Bit shift test pattern options */ #define HSTART (0x17U) /* Horizontal Frame (HREF column) Start 8 MSBs (2 LSBs are at HREF[5:4]) */ #define HSIZE (0x18U) /* Horizontal Sensor Size (2 LSBs are at HREF[1:0]) */ #define VSTART (0x19U) /* Vertical Frame (row) Start 8 MSBs (1 LSB is at HREF[6]) */ #define VSIZE (0x1AU) /* Vertical Sensor Size (1 LSB is at HREF[2]) */ #define PSHFT (0x1BU) /* Data Format - Pixel Delay Select */ #define REG_MIDH (0x1CU) /* Manufacturer ID Byte – High */ #define REG_MIDL (0x1DU) /* Manufacturer ID Byte – Low */ #define LAEC (0x1FU) /* Fine AEC Value - defines exposure value less than one row period */ #define COM11 (0x20U) /* Common Control 11 */ #define COM11_SNGL_FRAME_EN (0x02U) /* Single frame ON/OFF selection */ #define COM11_SNGL_XFR_TRIG (0x01U) /* Single frame transfer trigger */ #define BDBASE (0x22U) /* Banding Filter Minimum AEC Value */ #define DBSTEP (0x23U) /* Banding Filter Maximum Step */ #define AEW (0x24U) /* AGC/AEC - Stable Operating Region (Upper Limit) */ #define AEB (0x25U) /* AGC/AEC - Stable Operating Region (Lower Limit) */ #define VPT (0x26U) /* AGC/AEC Fast Mode Operating Region */ #define REG28 (0x28U) /* Selection on the number of dummy rows, N */ #define HOUTSIZE (0x29U) /* Horizontal Data Output Size MSBs (2 LSBs at register EXHCH[1:0]) */ #define EXHCH (0x2AU) /* Dummy Pixel Insert MSB */ #define EXHCL (0x2BU) /* Dummy Pixel Insert LSB */ #define VOUTSIZE (0x2CU) /* Vertical Data Output Size MSBs (LSB at register EXHCH[2]) */ #define ADVFL (0x2DU) /* LSB of Insert Dummy Rows in Vertical Sync (1 bit equals 1 row) */ #define ADVFH (0x2EU) /* MSB of Insert Dummy Rows in Vertical Sync */ #define YAVE (0x2FU) /* Y/G Channel Average Value */ #define LUMHTH (0x30U) /* Histogram AEC/AGC Luminance High Level Threshold */ #define LUMLTH (0x31U) /* Histogram AEC/AGC Luminance Low Level Threshold */ #define HREF (0x32U) /* Image Start and Size Control */ #define DM_LNL (0x33U) /* Dummy Row Low 8 Bits */ #define DM_LNH (0x34U) /* Dummy Row High 8 Bits */ #define ADOFF_B (0x35U) /* AD Offset Compensation Value for B Channel */ #define ADOFF_R (0x36U) /* AD Offset Compensation Value for R Channel */ #define ADOFF_GB (0x37U) /* AD Offset Compensation Value for GB Channel */ #define ADOFF_GR (0x38U) /* AD Offset Compensation Value for GR Channel */ #define OFF_B (0x39U) /* AD Offset Compensation Value for B Channel */ #define OFF_R (0x3AU) /* AD Offset Compensation Value for R Channel */ #define OFF_GB (0x3BU) /* AD Offset Compensation Value for GB Channel */ #define OFF_GR (0x3CU) /* AD Offset Compensation Value for GR Channel */ #define COM12 (0x3DU) /* DC offset compensation for analog process */ #define COM13 (0x3EU) /* Common Control 13 */ #define COM13_BLC_EN (0x80U) /* BLC enable */ #define COM13_ADC_EN (0x40U) /* ADC channel BLC ON/OFF control */ #define COM13_ANALOG_BLC (0x20U) /* Analog processing channel BLC ON/OFF control */ #define COM13_ABLC_GAIN_EN (0x04U) /* ABLC gain trigger enable */ #define COM14 (0x3FU) /* Common Control 14 */ #define COM15 (0x40U) /* Common Control 15 */ #define COM16 (0x41U) /* Common Control 16 */ #define TGT_B (0x42U) /* BLC Blue Channel Target Value */ #define TGT_R (0x43U) /* BLC Red Channel Target Value */ #define TGT_GB (0x44U) /* BLC Gb Channel Target Value */ #define TGT_GR (0x45U) /* BLC Gr Channel Target Value */ #define LC_CTR (0x46U) /* Lens Correction Control */ #define LC_CTR_RGB_COMP_1 (0x00U) /* R, G, and B channel compensation coefficient is set by LC_COEF ((0x49U)) */ /* R, G, and B channel compensation coefficient is set by registers LC_COEFB ((0x4BU)), LC_COEF ((0x49U)), and LC_COEFR ((0x4CU)), respectively */ #define LC_CTR_RGB_COMP_3 (0x04U) #define LC_CTR_EN (0x01U) /* Lens correction enable */ #define LC_XC (0x47U) /* X Coordinate of Lens Correction Center Relative to Array Center */ #define LC_YC (0x48U) /* Y Coordinate of Lens Correction Center Relative to Array Center */ #define LC_COEF (0x49U) /* Lens Correction Coefficient */ #define LC_RADI (0x4AU) /* Lens Correction Radius */ #define LC_COEFB (0x4BU) /* Lens Correction B Channel Compensation Coefficient */ #define LC_COEFR (0x4CU) /* Lens Correction R Channel Compensation Coefficient */ #define FIXGAIN (0x4DU) /* Analog Fix Gain Amplifier */ #define AREF0 (0x4EU) /* Sensor Reference Control */ #define AREF1 (0x4FU) /* Sensor Reference Current Control */ #define AREF2 (0x50U) /* Analog Reference Control */ #define AREF3 (0x51U) /* ADC Reference Control */ #define AREF4 (0x52U) /* ADC Reference Control */ #define AREF5 (0x53U) /* ADC Reference Control */ #define AREF6 (0x54U) /* Analog Reference Control */ #define AREF7 (0x55U) /* Analog Reference Control */ #define UFIX (0x60U) /* U Channel Fixed Value Output */ #define VFIX (0x61U) /* V Channel Fixed Value Output */ #define AWBB_BLK (0x62U) /* AWB Option for Advanced AWB */ #define AWB_CTRL0 (0x63U) /* AWB Control Byte 0 */ #define AWB_CTRL0_GAIN_EN (0x80U) /* AWB gain enable */ #define AWB_CTRL0_CALC_EN (0x40U) /* AWB calculate enable */ #define AWB_CTRL0_WBC_MASK (0x0FU) /* WBC threshold 2 */ #define DSP_CTRL1 (0x64U) /* DSP Control Byte 1 */ #define DSP_CTRL1_FIFO_EN (0x80U) /* FIFO enable/disable selection */ #define DSP_CTRL1_UV_EN (0x40U) /* UV adjust function ON/OFF selection */ #define DSP_CTRL1_SDE_EN (0x20U) /* SDE enable */ #define DSP_CTRL1_MTRX_EN (0x10U) /* Color matrix ON/OFF selection */ #define DSP_CTRL1_INTRP_EN (0x08U) /* Interpolation ON/OFF selection */ #define DSP_CTRL1_GAMMA_EN (0x04U) /* Gamma function ON/OFF selection */ #define DSP_CTRL1_BLACK_EN (0x02U) /* Black defect auto correction ON/OFF */ #define DSP_CTRL1_WHITE_EN (0x01U) /* White defect auto correction ON/OFF */ #define DSP_CTRL2 (0x65U) /* DSP Control Byte 2 */ #define DSP_CTRL2_VDCW_EN (0x08U) /* Vertical DCW enable */ #define DSP_CTRL2_HDCW_EN (0x04U) /* Horizontal DCW enable */ #define DSP_CTRL2_VZOOM_EN (0x02U) /* Vertical zoom out enable */ #define DSP_CTRL2_HZOOM_EN (0x01U) /* Horizontal zoom out enable */ #define DSP_CTRL3 (0x66U) /* DSP Control Byte 3 */ #define DSP_CTRL3_UV_EN (0x80U) /* UV output sequence option */ #define DSP_CTRL3_CBAR_EN (0x20U) /* DSP color bar ON/OFF selection */ #define DSP_CTRL3_FIFO_EN (0x08U) /* FIFO power down ON/OFF selection */ #define DSP_CTRL3_SCAL1_PWDN (0x04U) /* Scaling module power down control 1 */ #define DSP_CTRL3_SCAL2_PWDN (0x02U) /* Scaling module power down control 2 */ #define DSP_CTRL3_INTRP_PWDN (0x01U) /* Interpolation module power down control */ #define DSP_CTRL4 (0x67U) /* DSP Control Byte 4 */ #define DSP_CTRL4_YUV_RGB (0x00U) /* Output selection YUV or RGB */ #define DSP_CTRL4_RAW8 (0x02U) /* Output selection RAW8 */ #define DSP_CTRL4_RAW10 (0x03U) /* Output selection RAW10 */ #define AWB_BIAS (0x68U) /* AWB BLC Level Clip */ #define AWB_CTRL1 (0x69U) /* AWB Control 1 */ #define AWB_CTRL2 (0x6AU) /* AWB Control 2 */ #define AWB_CTRL3 (0x6BU) /* AWB Control 3 */ #define AWB_CTRL3_ADVANCED (0x80U) /* AWB mode select - Advanced AWB */ #define AWB_CTRL3_SIMPLE (0x00U) /* AWB mode select - Simple AWB */ #define AWB_CTRL4 (0x6CU) /* AWB Control 4 */ #define AWB_CTRL5 (0x6DU) /* AWB Control 5 */ #define AWB_CTRL6 (0x6EU) /* AWB Control 6 */ #define AWB_CTRL7 (0x6FU) /* AWB Control 7 */ #define AWB_CTRL8 (0x70U) /* AWB Control 8 */ #define AWB_CTRL9 (0x71U) /* AWB Control 9 */ #define AWB_CTRL10 (0x72U) /* AWB Control 10 */ #define AWB_CTRL11 (0x73U) /* AWB Control 11 */ #define AWB_CTRL12 (0x74U) /* AWB Control 12 */ #define AWB_CTRL13 (0x75U) /* AWB Control 13 */ #define AWB_CTRL14 (0x76U) /* AWB Control 14 */ #define AWB_CTRL15 (0x77U) /* AWB Control 15 */ #define AWB_CTRL16 (0x78U) /* AWB Control 16 */ #define AWB_CTRL17 (0x79U) /* AWB Control 17 */ #define AWB_CTRL18 (0x7AU) /* AWB Control 18 */ #define AWB_CTRL19 (0x7BU) /* AWB Control 19 */ #define AWB_CTRL20 (0x7CU) /* AWB Control 20 */ #define AWB_CTRL21 (0x7DU) /* AWB Control 21 */ #define GAM1 (0x7EU) /* Gamma Curve 1st Segment Input End Point (0x04U) Output Value */ #define GAM2 (0x7FU) /* Gamma Curve 2nd Segment Input End Point (0x08U) Output Value */ #define GAM3 (0x80U) /* Gamma Curve 3rd Segment Input End Point (0x10U) Output Value */ #define GAM4 (0x81U) /* Gamma Curve 4th Segment Input End Point (0x20U) Output Value */ #define GAM5 (0x82U) /* Gamma Curve 5th Segment Input End Point (0x28U) Output Value */ #define GAM6 (0x83U) /* Gamma Curve 6th Segment Input End Point (0x30U) Output Value */ #define GAM7 (0x84U) /* Gamma Curve 7th Segment Input End Point (0x38U) Output Value */ #define GAM8 (0x85U) /* Gamma Curve 8th Segment Input End Point (0x40U) Output Value */ #define GAM9 (0x86U) /* Gamma Curve 9th Segment Input End Point (0x48U) Output Value */ #define GAM10 (0x87U) /* Gamma Curve 10th Segment Input End Point (0x50U) Output Value */ #define GAM11 (0x88U) /* Gamma Curve 11th Segment Input End Point (0x60U) Output Value */ #define GAM12 (0x89U) /* Gamma Curve 12th Segment Input End Point (0x70U) Output Value */ #define GAM13 (0x8AU) /* Gamma Curve 13th Segment Input End Point (0x90U) Output Value */ #define GAM14 (0x8BU) /* Gamma Curve 14th Segment Input End Point (0xB0U) Output Value */ #define GAM15 (0x8CU) /* Gamma Curve 15th Segment Input End Point (0xD0U) Output Value */ #define SLOP (0x8DU) /* Gamma Curve Highest Segment Slope */ #define DNSTH (0x8EU) /* De-noise Threshold */ #define EDGE0 (0x8FU) /* Edge Enhancement Strength Control */ #define EDGE1 (0x90U) /* Edge Enhancement Threshold Control */ #define DNSOFF (0x91U) /* Auto De-noise Threshold Control */ #define EDGE2 (0x92U) /* Edge Enhancement Strength Upper Limit */ #define EDGE3 (0x93U) /* Edge Enhancement Strength Upper Limit */ #define MTX1 (0x94U) /* Matrix Coefficient 1 */ #define MTX2 (0x95U) /* Matrix Coefficient 2 */ #define MTX3 (0x96U) /* Matrix Coefficient 3 */ #define MTX4 (0x97U) /* Matrix Coefficient 4 */ #define MTX5 (0x98U) /* Matrix Coefficient 5 */ #define MTX6 (0x99U) /* Matrix Coefficient 6 */ #define MTX_CTRL (0x9AU) /* Matrix Control */ #define MTX_CTRL_DBL_EN (0x80U) /* Matrix double ON/OFF selection */ #define BRIGHTNESS (0x9BU) /* Brightness Control */ #define CONTRAST (0x9CU) /* Contrast Gain */ #define UVADJ0 (0x9EU) /* Auto UV Adjust Control 0 */ #define UVADJ1 (0x9FU) /* Auto UV Adjust Control 1 */ #define SCAL0 (0xA0U) /* DCW Ratio Control */ #define SCAL1 (0xA1U) /* Horizontal Zoom Out Control */ #define SCAL2 (0xA2U) /* Vertical Zoom Out Control */ #define FIFODLYM (0xA3U) /* FIFO Manual Mode Delay Control */ #define FIFODLYA (0xA4U) /* FIFO Auto Mode Delay Control */ #define SDE (0xA6U) /* Special Digital Effect Control */ #define SDE_NEGATIVE_EN (0x40U) /* Negative image enable */ #define SDE_GRAYSCALE_EN (0x20U) /* Gray scale image enable */ #define SDE_V_FIXED_EN (0x10U) /* V fixed value enable */ #define SDE_U_FIXED_EN (0x08U) /* U fixed value enable */ #define SDE_CONT_BRIGHT_EN (0x04U) /* Contrast/Brightness enable */ #define SDE_SATURATION_EN (0x02U) /* Saturation enable */ #define SDE_HUE_EN (0x01U) /* Hue enable */ #define USAT (0xA7U) /* U Component Saturation Gain */ #define VSAT (0xA8U) /* V Component Saturation Gain */ #define HUECOS (0xA9U) /* Cosine value × (0x80U) */ #define HUESIN (0xAAU) /* Sine value × (0x80U) */ #define SIGN_BIT (0xABU) /* Sign Bit for Hue and Brightness */ #define DSPAUTO (0xACU) /* DSP Auto Function ON/OFF Control */ #define DSPAUTO_AWB_EN (0x80U) /* AWB auto threshold control */ #define DSPAUTO_DENOISE_EN (0x40U) /* De-noise auto threshold control */ #define DSPAUTO_EDGE_EN (0x20U) /* Sharpness (edge enhancement) auto strength control */ #define DSPAUTO_UV_EN (0x10U) /* UV adjust auto slope control */ #define DSPAUTO_SCAL0_EN (0x08U) /* Auto scaling factor control (register SCAL0 ((0xA0U))) */ #define DSPAUTO_SCAL1_EN (0x04U) /* Auto scaling factor control (registers SCAL1 ((0xA1U) and SCAL2 ((0xA2U)))*/ #ifdef __cplusplus extern "C" { #endif /* * ov7725 initialization routine */ hpm_stat_t ov7725_init(camera_context_t *context, camera_config_t *ov_config); /* * ov7725 read register */ hpm_stat_t ov7725_read_register(camera_context_t *context, uint8_t reg, uint8_t *buf); /* * ov7725 write register */ hpm_stat_t ov7725_write_register(camera_context_t *context, uint8_t reg, uint8_t val); /* * ov7725 reset */ hpm_stat_t ov7725_software_reset(camera_context_t *context); /* * ov7725 check chip id */ hpm_stat_t ov7725_check_chip_id(camera_context_t *context); /** * @brief ov7725 power up * * @param [in] context camera_context_t */ void ov7725_power_up(camera_context_t *context); #ifdef __cplusplus } #endif #endif /* HPM_OV7725_H */