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https://github.com/openmv/openmv.git
synced 2025-11-04 14:49:50 +08:00
Update OV7725 registers.
* Fix the ov7725 driver for better camera image quality. * Add in banding filter setting for each camera.
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6c939b4c37
@ -30,6 +30,9 @@
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// Sensor PLL register value.
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#define OMV_OV7725_PLL_CONFIG (0x41) // x4
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// Sensor Banding Filter Value
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#define OMV_OV7725_BANDING (0x3F)
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// Bootloader LED GPIO port/pin
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#define OMV_BOOTLDR_LED_PIN (GPIO_PIN_2)
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#define OMV_BOOTLDR_LED_PORT (GPIOC)
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@ -30,6 +30,9 @@
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// Sensor PLL register value.
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#define OMV_OV7725_PLL_CONFIG (0x81) // x6
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// Sensor Banding Filter Value
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#define OMV_OV7725_BANDING (0x8F)
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// Bootloader LED GPIO port/pin
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#define OMV_BOOTLDR_LED_PIN (GPIO_PIN_1)
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#define OMV_BOOTLDR_LED_PORT (GPIOC)
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@ -30,6 +30,9 @@
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// Sensor PLL register value.
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#define OMV_OV7725_PLL_CONFIG (0x41) // x4
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// Sensor Banding Filter Value
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#define OMV_OV7725_BANDING (0x7F)
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// Bootloader LED GPIO port/pin
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#define OMV_BOOTLDR_LED_PIN (GPIO_PIN_1)
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#define OMV_BOOTLDR_LED_PORT (GPIOC)
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166
src/omv/ov7725.c
166
src/omv/ov7725.c
@ -17,97 +17,91 @@
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#include "omv_boardconfig.h"
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static const uint8_t default_regs[][2] = {
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{COM3, COM3_SWAP_YUV},
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{COM7, COM7_RES_VGA | COM7_FMT_RGB565 | COM7_FMT_RGB},
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{COM4, OMV_OV7725_PLL_CONFIG},
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{CLKRC, 0xC0}, /* Res/Bypass pre-scalar */
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// VGA Window Size
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{HSTART, 0x23},
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{HSIZE, 0xA0},
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{VSTART, 0x07},
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{VSIZE, 0xF0},
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{HREF, 0x00},
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// Scale down to QVGA Resoultion
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{HOUTSIZE, 0x50},
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{VOUTSIZE, 0x78},
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// From App Note.
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{COM12, 0x03},
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{HSTART, 0x22},
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{HSIZE, 0xa4},
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{VSTART, 0x07},
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{VSIZE, 0xf0},
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{HREF, 0x00},
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{HOUTSIZE, 0xa0},
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{VOUTSIZE, 0xf0},
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{EXHCH, 0x00},
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{TGT_B, 0x7F},
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{CLKRC, 0xC0}, // {CLKRC, 0x01},
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{TGT_B, 0x7f},
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{FIXGAIN, 0x09},
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{AWB_CTRL0, 0xE0},
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{DSP_CTRL1, 0xFF},
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{DSP_CTRL2, DSP_CTRL2_VDCW_EN | DSP_CTRL2_HDCW_EN | DSP_CTRL2_HZOOM_EN | DSP_CTRL2_VZOOM_EN},
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{AWB_CTRL0, 0xe0},
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{DSP_CTRL1, 0xff},
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{DSP_CTRL2, 0x20 | DSP_CTRL2_VDCW_EN | DSP_CTRL2_HDCW_EN | DSP_CTRL2_VZOOM_EN | DSP_CTRL2_HZOOM_EN}, // {DSP_CTRL2, 0x20},
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{DSP_CTRL3, 0x00},
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{DSP_CTRL4, 0x00},
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{DSPAUTO, 0xFF},
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{DSP_CTRL4, 0x48},
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{COM8, 0xF0},
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{COM6, 0xC5},
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{COM9, 0x21},
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{BDBASE, 0x7F},
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{COM8, 0xf0},
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{COM4, OMV_OV7725_PLL_CONFIG}, // {COM4, 0x41},
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{COM6, 0xc5},
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{COM9, 0x11},
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{BDBASE, 0x7f},
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{BDSTEP, 0x03},
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{AEW, 0x96},
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{AEB, 0x64},
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{VPT, 0xA1},
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{AEW, 0x40},
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{AEB, 0x30},
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{VPT, 0xa1},
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{EXHCL, 0x00},
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{AWB_CTRL3, 0xAA},
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{COM8, 0xFF},
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{AWB_CTRL3, 0xaa},
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{COM8, 0xff},
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//Gamma
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{GAM1, 0x0C},
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{GAM2, 0x16},
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{GAM3, 0x2A},
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{GAM4, 0x4E},
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{GAM5, 0x61},
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{GAM6, 0x6F},
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{GAM7, 0x7B},
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{GAM8, 0x86},
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{GAM9, 0x8E},
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{GAM10, 0x97},
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{GAM11, 0xA4},
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{GAM12, 0xAF},
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{GAM13, 0xC5},
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{GAM14, 0xD7},
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{GAM15, 0xE8},
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{SLOP, 0x20},
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{EDGE1, 0x05},
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{DNSOFF, 0x01},
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{EDGE2, 0x03},
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{EDGE3, 0x00},
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{DNSOFF, 0x01},
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{MTX1, 0xB0},
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{MTX2, 0x9D},
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{MTX1, 0xb0},
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{MTX2, 0x9d},
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{MTX3, 0x13},
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{MTX4, 0x16},
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{MTX5, 0x7B},
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{MTX5, 0x7b},
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{MTX6, 0x91},
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{MTX_CTRL, 0x1E},
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{MTX_CTRL, 0x1e},
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{BRIGHTNESS, 0x08},
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{CONTRAST, 0x20},
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{UVADJ0, 0x81},
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{SDE, (SDE_CONT_BRIGHT_EN | SDE_SATURATION_EN)},
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{SDE, SDE_CONT_BRIGHT_EN | SDE_SATURATION_EN},
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{GAM1, 0x0c},
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{GAM2, 0x16},
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{GAM3, 0x2a},
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{GAM4, 0x4e},
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{GAM5, 0x61},
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{GAM6, 0x6f},
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{GAM7, 0x7b},
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{GAM8, 0x86},
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{GAM9, 0x8e},
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{GAM10, 0x97},
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{GAM11, 0xa4},
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{GAM12, 0xaf},
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{GAM13, 0xc5},
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{GAM14, 0xd7},
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{GAM15, 0xe8},
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{SLOP, 0x20},
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// For 30 fps/60Hz
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{DM_LNL, 0x00},
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{DM_LNH, 0x00},
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{BDBASE, 0x7F},
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{BDBASE, OMV_OV7725_BANDING}, // {BDBASE, 0x7f}
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{BDSTEP, 0x03},
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// Lens Correction, should be tuned with real camera module
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{LC_CTR, 0x01}, // Enable LC and use 1 coefficient for all 3 channels
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{LC_RADI, 0x30}, // The radius of the circle where no compensation applies
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{LC_COEF, 0x30}, // RGB Lens correction coefficient
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{LC_RADI, 0x10},
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{LC_COEF, 0x10},
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{LC_COEFB, 0x14},
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{LC_COEFR, 0x17},
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{LC_CTR, 0x01}, // {LC_CTR, 0x05},
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// Frame reduction in night mode.
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{COM5, 0xD5},
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{COM5, 0xf5}, // {COM5, 0x65},
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// OpenMV Custom.
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{COM7, COM7_FMT_RGB565},
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// End.
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{0x00, 0x00},
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};
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@ -153,24 +147,21 @@ static const uint8_t saturation_regs[NUM_SATURATION_LEVELS][2] = {
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static int reset(sensor_t *sensor)
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{
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int i=0;
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const uint8_t (*regs)[2];
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// Reset all registers
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cambus_writeb(sensor->slv_addr, COM7, COM7_RESET);
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int ret = cambus_writeb(sensor->slv_addr, COM7, COM7_RESET);
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// Delay 10 ms
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systick_sleep(10);
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// Delay 2 ms
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systick_sleep(2);
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// Write default regsiters
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for (i=0, regs = default_regs; regs[i][0]; i++) {
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cambus_writeb(sensor->slv_addr, regs[i][0], regs[i][1]);
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for (int i = 0; default_regs[i][0]; i++) {
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ret |= cambus_writeb(sensor->slv_addr, default_regs[i][0], default_regs[i][1]);
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}
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// Delay
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systick_sleep(30);
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// Delay 300 ms
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systick_sleep(300);
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return 0;
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return ret;
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}
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static int sleep(sensor_t *sensor, int enable)
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@ -210,18 +201,17 @@ static int set_pixformat(sensor_t *sensor, pixformat_t pixformat)
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switch (pixformat) {
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case PIXFORMAT_RGB565:
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reg = COM7_SET_FMT(reg, COM7_FMT_RGB);
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ret = cambus_writeb(sensor->slv_addr, DSP_CTRL4, 0);
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ret |= cambus_writeb(sensor->slv_addr, DSP_CTRL4, DSP_CTRL4_YUV_RGB);
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break;
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case PIXFORMAT_YUV422:
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case PIXFORMAT_GRAYSCALE:
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reg = COM7_SET_FMT(reg, COM7_FMT_YUV);
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ret = cambus_writeb(sensor->slv_addr, DSP_CTRL4, 0);
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ret |= cambus_writeb(sensor->slv_addr, DSP_CTRL4, DSP_CTRL4_YUV_RGB);
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break;
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case PIXFORMAT_BAYER:
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reg = COM7_SET_FMT(reg, COM7_FMT_P_BAYER);
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ret = cambus_writeb(sensor->slv_addr, DSP_CTRL4, DSP_CTRL4_RAW8);
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ret |= cambus_writeb(sensor->slv_addr, DSP_CTRL4, DSP_CTRL4_RAW8);
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break;
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default:
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return -1;
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}
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@ -255,7 +245,6 @@ static int set_framesize(sensor_t *sensor, framesize_t framesize)
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ret |= cambus_writeb(sensor->slv_addr, HSIZE, 0x50);
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ret |= cambus_writeb(sensor->slv_addr, VSTART, 0x03);
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ret |= cambus_writeb(sensor->slv_addr, VSIZE, 0x78);
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ret |= cambus_writeb(sensor->slv_addr, HREF, 0x00);
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// Enable auto-scaling/zooming factors
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ret |= cambus_writeb(sensor->slv_addr, DSPAUTO, 0xFF);
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@ -271,15 +260,14 @@ static int set_framesize(sensor_t *sensor, framesize_t framesize)
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ret |= cambus_writeb(sensor->slv_addr, HSIZE, 0xA0);
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ret |= cambus_writeb(sensor->slv_addr, VSTART, 0x07);
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ret |= cambus_writeb(sensor->slv_addr, VSIZE, 0xF0);
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ret |= cambus_writeb(sensor->slv_addr, HREF, 0x00);
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// Disable auto-scaling/zooming factors
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ret |= cambus_writeb(sensor->slv_addr, DSPAUTO, 0xF3);
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// Clear auto-scaling/zooming factors
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ret |= cambus_writeb(sensor->slv_addr, SCAL0, 0x00);
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ret |= cambus_writeb(sensor->slv_addr, SCAL1, 0x00);
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ret |= cambus_writeb(sensor->slv_addr, SCAL2, 0x00);
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ret |= cambus_writeb(sensor->slv_addr, SCAL1, 0x40);
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ret |= cambus_writeb(sensor->slv_addr, SCAL2, 0x40);
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}
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return ret;
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@ -316,7 +304,6 @@ static int set_brightness(sensor_t *sensor, int level)
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static int set_saturation(sensor_t *sensor, int level)
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{
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int ret=0;
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level += (NUM_SATURATION_LEVELS / 2 );
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if (level < 0 || level >= NUM_SATURATION_LEVELS) {
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return -1;
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@ -341,7 +328,7 @@ static int set_colorbar(sensor_t *sensor, int enable)
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{
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uint8_t reg;
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int ret = cambus_readb(sensor->slv_addr, COM3, ®);
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// Enable colorbar test pattern output
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reg = COM3_SET_CBAR(reg, enable);
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ret |= cambus_writeb(sensor->slv_addr, COM3, reg);
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@ -570,7 +557,7 @@ static int set_special_effect(sensor_t *sensor, sde_t sde)
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case SDE_NORMAL:
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ret |= cambus_writeb(sensor->slv_addr, SDE, 0x06);
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ret |= cambus_writeb(sensor->slv_addr, UFIX, 0x80);
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ret |= cambus_writeb(sensor->slv_addr, UFIX, 0x80);
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ret |= cambus_writeb(sensor->slv_addr, VFIX, 0x80);
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break;
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default:
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return -1;
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@ -586,6 +573,7 @@ static int set_lens_correction(sensor_t *sensor, int enable, int radi, int coef)
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ret |= cambus_writeb(sensor->slv_addr, LC_CTR, (enable&0x01));
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ret |= cambus_writeb(sensor->slv_addr, LC_RADI, radi);
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ret |= cambus_writeb(sensor->slv_addr, LC_COEF, coef);
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return ret;
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}
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@ -106,7 +106,7 @@
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#define COM8_AEC_EN 0x01 /* AEC Enable */
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#define COM8_SET_AGC(r, x) ((r&0xFB)|((x&0x1)<<2))
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#define COM8_SET_AWB(r, x) ((r&0xFD)|((x&0x1)<<1))
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#define COM8_SET_AEC(r, x) ((r&0xFE)|((x&0x1)<<0))
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#define COM8_SET_AEC(r, x) ((r&0x7E)|((x&0x1)<<7)|((x&0x1)<<0))
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#define COM9 0x14 /* Common Control 9 */
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#define COM9_HISTO_AVG 0x80 /* Histogram or average based AEC/AGC selection */
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@ -285,7 +285,7 @@
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#define GAM6 0x83 /* Gamma Curve 6th Segment Input End Point 0x30 Output Value */
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#define GAM7 0x84 /* Gamma Curve 7th Segment Input End Point 0x38 Output Value */
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#define GAM8 0x85 /* Gamma Curve 8th Segment Input End Point 0x40 Output Value */
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#define GAM9 0x86 /* Gamma Curve 9th Segment Input End Point 0x48 Output Value */
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#define GAM9 0x86 /* Gamma Curve 9th Segment Input Enpd Point 0x48 Output Value */
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#define GAM10 0x87 /* Gamma Curve 10th Segment Input End Point 0x50 Output Value */
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#define GAM11 0x88 /* Gamma Curve 11th Segment Input End Point 0x60 Output Value */
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#define GAM12 0x89 /* Gamma Curve 12th Segment Input End Point 0x70 Output Value */
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