DVP
Update time:2018-04-13 Views:4722
1 Board Resource
There is a DVP camera interface on the Firefly-RK3288-Reload development board
This article will introduce how to make the camera work properly, using OV5640 as an example.
2 Relevant Code Directory
The code directories of camera are shown as followed:
Android:
`- hardware/rockchip/camera |- Config | `- cam_board.xml // Parameter Configuration |- CameraHal // HAL source code `- SiliconImage // ISP library, including driver source code of all supported modules. `- isi/drv/OV5640 // Driver source code of OV5640 module. `- calib/OV5640.xml // Calibration parameter of OV5640 module.
Kernel:
|- kernel/drivers/media/video/rk_camsys // CamSys driver source code `- kernel/include/media/camsys_head.h
3 Configuration Theory
What you need to configure the camera is to make the pins and clock work properly.
According to the schematic diagram below, you need to provide: VCC28_DVP、VCC18_DVP、VCCIO_YUV、PWDN(FLASH0_CLE)、RESET and XCLK1.
RST controled by PDN1
PWDN、RST are connected to GPIO3_B4、GPIO2_B7
3.1 Android Layer Configuration
Edit hardware/rockchip/camera/Config/cam_board_rk3288.xml to configure the camera:
<?xml version="1.0" ?> <BoardFile> <BoardXmlVersion version="v0.0xd.0"></BoardXmlVersion> <CamDevie> <HardWareInfo> <Sensor> <SensorName name="OV5640" ></SensorName> <SensorDevID IDname="CAMSYS_DEVID_SENSOR_2"></SensorDevID> <SensorHostDevID busnum="CAMSYS_DEVID_MARVIN" ></SensorHostDevID> <SensorI2cBusNum busnum="3"></SensorI2cBusNum> <SensorI2cAddrByte byte="2"></SensorI2cAddrByte> <SensorI2cRate rate="100000"></SensorI2cRate> <SensorMclk mclk="24000000"></SensorMclk> <SensorAvdd name="NC" min="0" max="0"></SensorAvdd> <SensorDovdd name="NC" min="18000000" max="18000000"></SensorDovdd> <SensorDvdd name="NC" min="0" max="0"></SensorDvdd> <SensorGpioPwdn ioname="RK30_PIN3_PB4" active="1"></SensorGpioPwdn> <SensorGpioRst ioname="RK30_PIN2_PB7" active="0"></SensorGpioRst> <SensorGpioPwen ioname="RK30_PIN0_PB3" active="1"></SensorGpioPwen> <SensorFacing facing="front"></SensorFacing> <SensorInterface mode="CCIR601"></SensorInterface> <SensorMirrorFlip mirror="0"></SensorMirrorFlip> <SensorOrientation orientation="0"></SensorOrientation> <SensorPowerupSequence seq="1234"> <SensorFovParemeter h="60.0" v="60.0"></SensorFovParemeter> <SensorAWB_Frame_Skip fps="15"></SensorAWB_Frame_Skip> <SensorPhy phyMode="CamSys_Phy_Cif" sensor_d0_to_cif_d="0" cif_num="0" sensorFmt="CamSys_Fmt_Raw_10b"></SensorPhy> </Sensor> <VCM> <VCMDrvName name="NC"></VCMDrvName> <VCMName name="NC"></VCMName> <VCMI2cBusNum busnum="0"></VCMI2cBusNum> <VCMI2cAddrByte byte="0"></VCMI2cAddrByte> <VCMI2cRate rate="0"></VCMI2cRate> <VCMVdd name="NC" min="0" max="0"></VCMVdd> <VCMGpioPwdn ioname="NC" active="0"></VCMGpioPwdn> <VCMGpioPower ioname="NC" active="0"></VCMGpioPower> <VCMCurrent start="20" rated="80" vcmmax="100" stepmode="13" drivermax="100"></VCMCurrent> </VCM> <Flash> <FlashName name="NC"></FlashName> <FlashI2cBusNum busnum="0"></FlashI2cBusNum> <FlashI2cAddrByte byte="0"></FlashI2cAddrByte> <FlashI2cRate rate="0"></FlashI2cRate> <FlashTrigger ioname="NC" active="1"></FlashTrigger> <FlashEn ioname="NC" active="1"></FlashEn> <FlashModeType mode="0"></FlashModeType> <FlashLuminance luminance="0"></FlashLuminance> <FlashColorTemp colortemp="0"></FlashColorTemp> </Flash> </HardWareInfo> <SoftWareInfo> <AWB> <AWB_Auto support="1"></AWB_Auto> <AWB_Incandescent support="1"></AWB_Incandescent> <AWB_Fluorescent support="1"></AWB_Fluorescent> <AWB_Warm_Fluorescent support="1"></AWB_Warm_Fluorescent> <AWB_Daylight support="1"></AWB_Daylight> <AWB_Cloudy_Daylight support="1"></AWB_Cloudy_Daylight> <AWB_Twilight support="1"></AWB_Twilight> <AWB_Shade support="1"></AWB_Shade> </AWB> <Sence> <Sence_Mode_Auto support="1"></Sence_Mode_Auto> <Sence_Mode_Action support="1"></Sence_Mode_Action> <Sence_Mode_Portrait support="1"></Sence_Mode_Portrait> <Sence_Mode_Landscape support="1"></Sence_Mode_Landscape> <Sence_Mode_Night support="1"></Sence_Mode_Night> <Sence_Mode_Night_Portrait support="1"></Sence_Mode_Night_Portrait> <Sence_Mode_Theatre support="1"></Sence_Mode_Theatre> <Sence_Mode_Beach support="1"></Sence_Mode_Beach> <Sence_Mode_Snow support="1"></Sence_Mode_Snow> <Sence_Mode_Sunset support="1"></Sence_Mode_Sunset> <Sence_Mode_Steayphoto support="1"></Sence_Mode_Steayphoto> <Sence_Mode_Pireworks support="1"></Sence_Mode_Pireworks> <Sence_Mode_Sports support="1"></Sence_Mode_Sports> <Sence_Mode_Party support="1"></Sence_Mode_Party> <Sence_Mode_Candlelight support="1"></Sence_Mode_Candlelight> <Sence_Mode_Barcode support="1"></Sence_Mode_Barcode> <Sence_Mode_HDR support="1"></Sence_Mode_HDR> </Sence> <Effect> <Effect_None support="1"></Effect_None> <Effect_Mono support="1"></Effect_Mono> <Effect_Solarize support="1"></Effect_Solarize> <Effect_Negative support="1"></Effect_Negative> <Effect_Sepia support="1"></Effect_Sepia> <Effect_Posterize support="1"></Effect_Posterize> <Effect_Whiteboard support="1"></Effect_Whiteboard> <Effect_Blackboard support="1"></Effect_Blackboard> <Effect_Aqua support="1"></Effect_Aqua> </Effect> <FocusMode> <Focus_Mode_Auto support="0"></Focus_Mode_Auto> <Focus_Mode_Infinity support="0"></Focus_Mode_Infinity> <Focus_Mode_Marco support="0"></Focus_Mode_Marco> <Focus_Mode_Fixed support="0"></Focus_Mode_Fixed> <Focus_Mode_Edof support="0"></Focus_Mode_Edof> <Focus_Mode_Continuous_Video support="0"></Focus_Mode_Continuous_Video> <Focus_Mode_Continuous_Picture support="0"></Focus_Mode_Continuous_Picture> </FocusMode> <FlashMode> <Flash_Mode_Off support="1"></Flash_Mode_Off> <Flash_Mode_On support="1"></Flash_Mode_On> <Flash_Mode_Torch support="1"></Flash_Mode_Torch> <Flash_Mode_Auto support="1"></Flash_Mode_Auto> <Flash_Mode_Red_Eye support="1"></Flash_Mode_Red_Eye> </FlashMode> <AntiBanding> <Anti_Banding_Auto support="1"></Anti_Banding_Auto> <Anti_Banding_50HZ support="1"></Anti_Banding_50HZ> <Anti_Banding_60HZ support="1"></Anti_Banding_60HZ> <Anti_Banding_Off support="1"></Anti_Banding_Off> </AntiBanding> <HDR support="1"></HDR> <ZSL support="1"></ZSL> <DigitalZoom support="1"></DigitalZoom> <Continue_SnapShot support="1"></Continue_SnapShot> <PreviewSize width="800" height="600"></PreviewSize> <DV> <DV_QCIF name="qcif" width="176" height="144" fps="10" support="1"></DV_QCIF> <DV_QVGA name="qvga" width="320" height="240" fps="10" support="1"></DV_QVGA> <DV_CIF name="cif" width="352" height="288" fps="10" support="1"></DV_CIF> <DV_VGA name="480p" width="640" height="480" fps="10" support="1"></DV_VGA> <DV_480P name="480p" width="720" height="480" fps="10" support="0"></DV_480P> <DV_720P name="720p" width="1280" height="720" fps="10" support="0"></DV_720P> <DV_1080P name="1080p" width="1920" height="1080" fps="10" support="0"></DV_1080P> </DV> </SoftWareInfo> </CamDevie> </BoardFile>
You can modify these contents:
Sensor Name
<SensorName name="OV5640" ></SensorName>
This name must match the name of the sensor driver, which has the following format: libisp_isi_drv_OV5640.so
This driver file will be created in directory " out/target/product/rk3288_box/system/lib/hw/" after an Android build.
Sensor Software ID
<SensorDevID IDname="CAMSYS_DEVID_SENSOR_2">
The ID must be unique among the camera drivers.You can fill with the following values:
CAMSYS_DEVID_SENSOR_1A CAMSYS_DEVID_SENSOR_1B CAMSYS_DEVID_SENSOR_2
Collector Name
<SensorHostDevID busnum="CAMSYS_DEVID_MARVIN" ></SensorHostDevID>
Currently only support:
CAMSYS_DEVID_MARVIN
I2C channel number
<SensorI2cBusNum busnum="3"></SensorI2cBusNum>
You can get the number via schematic or datasheet of RK3288.
Length of Register Address (in bytes)
<SensorI2cAddrByte byte="2"></SensorI2cAddrByte>
Clock of I2C (in Hz)
<SensorI2cRate rate="100000"></SensorI2cRate>
MCLK of Camera (in Hz)
<SensorMclk mclk="24000000"></SensorMclk>
PMU LDO Name Connected to AVDD. Set to NC if not connected.
<SensorAvdd name="NC" min="0" max="0"></SensorAvdd>
PMU LDO Name Connected to DOVDD
<SensorDovdd name="NC" min="18000000" max="18000000"></SensorDovdd>
Set to NC if not connected to PMU. Value of min and max must be specified, which determinte the voltage of the IO pins.
PMU LDO Name Connected to DVDD
<SensorDvdd name="NC" min="0" max="0"></SensorDvdd>
Set to NC if not connected to PMU.
PowerDown Pin
<SensorGpioPwdn ioname="RK30_PIN3_PB4" active="1"></SensorGpioPwdn>
Fill in the GPIO's name and active level.
Reset Pin
<SensorGpioRst ioname="RK30_PIN2_PB7" active="0"></SensorGpioRst>
Fill in the GPIO's name and active level.
Power Pin
<SensorGpioPwen ioname="RK30_PIN0_PB3" active="1"></SensorGpioPwen>
Fill in the GPIO's name and active level.
Facing Value
<SensorFacing facing="front"></SensorFacing>
Set the value as "front" or "back".
Camera Interface Type
<SensorInterface mode="MIPI"></SensorInterface>
The following values are valid:
CCIR601 CCIR656 MIPI SMIA
Mirror Flip
<SensorMirrorFlip mirror="0"></SensorMirrorFlip>
This is not supported at the moment.
Orientation
<SensorOrientation orientation="0"></SensorOrientation>
Hardware Interface
DVP
<SensorPhy phyMode="CamSys_Phy_Cif" sensor_d0_to_cif_d ="0" cif_num="0" sensorFmt="CamSys_Fmt_Raw_10b"></SensorPhy>
phyMode: Sensor hardware interface type, set to "CamSys_Phy_Cif" if it is a DVP sensor.
sensor_d0_to_cif_d: The data number of the SoC DVP interface, which is connected with output data D0 of sensor DVP.
cif_num: The interface number of the SoC DVP, which is connected with sensor DVP.
sensorFmt:Data format of sensor output. Only "CamSys_Fmt_Raw_10b" is supported.
Build "drivers\media\video\rk_camsys" driver into kernel, with following configuration instructions:
Run in the kernel source directory:
make menuconfig
Select the following configuration items:
Device Drivers ---> <*>Multimedia support ---> <*>camsys driver RockChip camera system driver ---> <*> camsys driver for marvin isp < > camsys driver for cif
Finally, run:
make firefly-rk3288-reload.img
which will start the kernel compilation.