About V4L2 Driver User Guide

I believe the SPRUEP7 document is what you are looking for, the CCDC driver discussed there is V4L2 compliant, and if you are using the V4L2 driver from the DVSDK/PSP on a DM644x or DM35x than you are using the driver they are referring to here.

http://focus.ti.com/lit/ug/spruep7/spruep7.pdf

A further question on how to program based on CCDC driver.

I've read spruep7, and I try to write a simple code to open CCDC, but I failed. I think I must misunderstand something about coding based on driver.

Testccdc.c :

/* spruep7 tells me that CCDC driver uses some include files, so I also include these head files.*/

#include <davinci_vpfe.h>

#include <ccdc_davinci.h>

#include <mt9t001.h>

#include <tvp5146.h>

/* I begin my main function*/

int main()

{

        int iState;  //Getting return value of some functions to verify whether it is called successfully.

        int fd;

        /*here I want to open CCDC*/

        open("/dev/davinci_aew",O_RDWR);

        iState=close(fd);

        if(iState!=0)

       {   //   Error message.

       }

        return 0;

}

And then I decide to compile this program and run it on ARM.(Actually, after finishing this code,I think this program is not related with CCDC driver, but I don't know how to do.)

target$ > arm_v5t_le-gcc -c Testccdc.c -o Testccdc -I /home/usracc/workdir/lsp/ti-davinci/include/media/

and then , I get lots of error including "O_RDWR"  is no been defined etc.

So, I think I must misunderstand how to coding based on CCDC driver. Could you tell me how to revise this program? Or, I make mistakes from the very beginning.

Thanks a lot.

It appears you may not have all the paths to necessary header files defined.  You should refer to the DVSDK demos for examples of using drivers.

Hi LorryAstra

With your experience.

I try connect Micron MT9P031 sensor camera through DVEVM.

I also try to write a simple code to open CCDC ,

I believe It`s similar your device, what souled I need to do.

I can`t find the necessary file such as mt9t001.h

Thanks a lot.

Please refer to encodedecode demos in "/home/useAcc/workdir/dvevm_x_xx/demos/".

In capture thread, it describes how to open CCDC device and other neccesary operations.

For details about CCDC driver,pls refer to : http://focus.ti.com/lit/ug/spruep7/spruep7.pdf 

I don't know whether the compilor can't find "mt9t001.h". If it is true, pls check your "makefile". I think you miss one or more "include path" in your command line.