PicoCamera
0.2.0
Camera library for RP2040 with an esp32-camera compatible API
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gc0308_regs.h
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/*
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* This file is part of the PicoCamera project.
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* https://github.com/umeiko/PicoCamera
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*
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* Author: umeko <umeko@stu.xmu.edu.cn>
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* License: MIT
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*/
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/*
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* GC0308 register definitions (8-bit register addresses).
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* Ported from esp32-camera's private_include/gc0308_regs.h (Apache-2.0),
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* comments preserved as-is.
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*/
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#ifndef __GC0308_REGS_H__
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#define __GC0308_REGS_H__
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// System Control Registers
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#define RESET_RELATED 0xfe
// Bit[7]: Software reset
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// Bit[6:5]: NA
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// Bit[4]: CISCTL_restart_n
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// Bit[3:1]: NA
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// Bit[0]: page select
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// 0:page0
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// 1:page1
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// Page 0 Registers
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// Exposure Control (Manual, when AEC disabled)
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#define EXPOSURE_HIGH 0x03
// Exposure time high byte (bits 11:4)
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#define EXPOSURE_LOW 0x04
// Exposure time low byte (bits 3:0 in upper nibble)
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// Total exposure = (EXPOSURE_HIGH << 4) | (EXPOSURE_LOW >> 4)
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// Range: 0-4095 (12-bit value)
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// Windowing Registers
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#define ROW_START_H 0x05
// Row start address high byte
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#define ROW_START_L 0x06
// Row start address low byte
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#define COL_START_H 0x07
// Column start address high byte
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#define COL_START_L 0x08
// Column start address low byte
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#define WIN_HEIGHT_H 0x09
// Window height high byte
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#define WIN_HEIGHT_L 0x0a
// Window height low byte
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#define WIN_WIDTH_H 0x0b
// Window width high byte
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#define WIN_WIDTH_L 0x0c
// Window width low byte
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// Sensor Control
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#define CISCTL_MODE1 0x14
// Bit[1]: V_flip, Bit[0]: H_mirror
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// AAAA_EN - Auto Algorithm Enable (AEC/AGC/AWB/ABB)
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#define AAAA_EN 0x22
// Auto control enable register
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// Per Linux kernel driver:
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// Bit[0]: AEC enable (1=on, 0=off)
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// Bit[1]: AWB enable (1=on, 0=off)
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// Bit[2]: AGC enable (1=on, 0=off)
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// Special Effects and Output Control
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#define SPECIAL_EFFECT 0x23
// Special effect control
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// Bit[1:0]: Effect mode
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// 00: Normal
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// 01: Negative
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// 10: Grayscale/Color tint mode
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// Output Format
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#define OUTPUT_FMT 0x24
// Output format control
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// Bit[3:0]: Output format selection
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// 0010: YCbYCr (YUV422)
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// 0110: RGB565
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// others: see datasheet
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// Analog Circuit Control
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#define PCLK_DIV 0x28
// PCLK divider control (frequency division)
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// Output Control
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#define OUT_CTRL 0x2e
// Output control
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// Bit[0]: Color bar enable
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// Global Gain
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#define GLOBAL_GAIN 0x50
// Global gain control (hardware: 0-63, 6-bit)
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// Manual White Balance Gain (when AWB disabled)
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#define AWB_R_GAIN 0x5a
// Red channel gain for manual WB
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#define AWB_G_GAIN 0x5b
// Green channel gain for manual WB
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#define AWB_B_GAIN 0x5c
// Blue channel gain for manual WB
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// Edge Enhancement (INTPEE - Interpolation and Edge-Enhancement)
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#define EDGE12_EFFECT 0x77
// Edge enhancement effect control
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#define EDGE_POS_RATIO 0x78
// Edge position ratio
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#define EDGE1_MINMAX 0x79
// Edge1 min/max control
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// Saturation Control (Page 0)
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#define SATURATION_Cb 0xb1
// Cb saturation gain (default: 0x40)
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#define SATURATION_Cr 0xb2
// Cr saturation gain (default: 0x40)
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// Contrast
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#define CONTRAST 0xb3
// Contrast control (default: 0x40)
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// AEC Registers - Automatic Exposure Control (Page 0)
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#define AEC_MODE1 0xd0
// AEC mode control register 1
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#define AEC_MODE2 0xd1
// AEC mode control register 2
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#define AEC_MODE3 0xd2
// AEC mode control register 3
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#define AEC_TARGET_Y 0xd3
// AEC target Y value / Expected luminance (default: 0x48)
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// Subsample Window (Page 0 for coordinate reference)
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#define SUB_COL_N 0xf7
// Subsample column start (units of 4 pixels)
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#define SUB_ROW_N 0xf8
// Subsample row start (units of 4 pixels)
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#define SUB_COL_N1 0xf9
// Subsample column end (units of 4 pixels)
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#define SUB_ROW_N1 0xfa
// Subsample row end (units of 4 pixels)
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// Page 1 Registers (access after setting 0xfe = 0x01)
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// Subsample Control (Page 1)
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#define SUBSAMPLE_EN 0x53
// Bit[7]: Subsample enable
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#define SUBSAMPLE_MODE 0x54
// Subsample mode control
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#define SUBSAMPLE_EN2 0x55
// Bit[0]: Subsample enable 2
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#define SUBSAMPLE_Y0 0x56
// Y subsample config 0
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#define SUBSAMPLE_Y1 0x57
// Y subsample config 1
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#define SUBSAMPLE_UV0 0x58
// UV subsample config 0
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#define SUBSAMPLE_UV1 0x59
// UV subsample config 1
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// AAAA_EN (0x22) bit masks - Auto Algorithm Enable
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#define AEC_ENABLE 0x01
// Bit 0: AEC enable
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#define AWB_ENABLE 0x02
// Bit 1: AWB enable
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#define AGC_ENABLE 0x04
// Bit 2: AGC enable
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// CISCTL_MODE1 (0x14) bit masks
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#define HMIRROR_MASK 0x01
// Bit 0: Horizontal mirror
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#define VFLIP_MASK 0x02
// Bit 1: Vertical flip
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// SPECIAL_EFFECT (0x23) bit masks
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#define EFFECT_NORMAL 0x00
// Normal mode
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#define EFFECT_NEGATIVE 0x01
// Negative/inverse
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#define EFFECT_GRAYSCALE 0x02
// B&W or color tint mode
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// OUT_CTRL (0x2e) bit masks
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#define COLORBAR_ENABLE 0x01
// Bit 0: Color bar test pattern
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#endif
// __GC0308_REGS_H__
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