Hi,

Are you sure that the mfc camera is outputting data? Because it does not seem CSIRX is detecting it. 

Regards,

Brijesh

yes , the mfc camera sensor is outputting data, we have measured waveform from MAX96716

hi，

The problem is that the MAX96716 is outputting data, but the register value indicates that the CSIRX is not receiving the data. what are the possible causes? thanks.

Hi,

Is the CSIRX instance that you are looking for is correct? Can you please check if the other instance is toggling? If it is outputting data, then this register should be changing between value 2 and 3. 

Are both the lanes on Maxim output going on stop state? Is the lane speed setup correctly from deserialzier output? 

Regards,

Brijesh

Can you see the picture I have posted? I read the register 0x4504048, the value is changing between 0x333306 and 0x222206 when the deserializer is outputting data.  but when I read the register  0x4514048, the value is not changing when the Maxim 96716 is outputing data.

I think the lanes on Maxim output is not going on stop state, because we can observe its waveform by oscilloscope. and we have checked with maxim fae,

the waveform is right.

the maxim output lane speed is 800Mbps, the parameter setting in soc is as follows.

hi，

We can observe the value of register 0x4514048 is changing between 0x222206 and 0x333306 when maxim 96716 is outputting data. The value of the other two register is as follows, could it indicate the csirx is working? thanks.

Hi,

ok, are you checking this out on TDA4VEN device? Are you using correct lane speed in the sensor interface parameters?  it shouldn't be 800, instead, you should use macro from CSIRX driver for specifying lane speed. 

Regards,

Brijesh

hi,

The MAX96716 deserializer lane speed is 800Mbps,  we just modified the macro from CSIRX_LANE_BAND_SPEED_2250_TO_2500_MBPS to 

yes, it is on TDA4VEN device.

We have checked that the vc is 0 and the dt is yuv422-8, we now read the 0x4510020, the value is as follows.

Hi,

ok, can you please make sure to start deserializer and sensor output only in the streamon callback and not before this callback? In fact, could you move complete configuration to streamon callback and see if CSIRX detects and captures the images?

Regards,

Brijesh 

hi，

Thanks, we have tested according to your suggestion and it works, the captDrvCallback can be called.

Sorry，we may have other questions, the image captured by video pipeline looks incorrect.

But i thought you are trying to capture YUV data, isn't it? Can you share your output image? 

Regards,

Brijesh

yes, i have uploaded.

csix_raw_output_1920x1536_ch_0_00000000.zip

One more question, the resolution is 1920X1536, the datatype is yuv422-8. According to my understanding，the file size should be 1920X1536X2B=5760KB, but actually the size is 2880KB, just half of it. why is it? thanks.

Hi,

Are you sure that the sensor output is in YUV422 format? Because i see upper 16bits are all 0 in all 32bit word in the captured image. There should be valid pixel here from the sensor. 

Most likely this is coming from the sensor/deserializer, can you please check configuration in sensor/deserializer? 

Regards,

Brijesh

Yes, we now have captured a picture after modifying configuration of the serializer , we reviewed the picture by yuvplayer ,but the picture seems to comprised of two identical images. and there is a green band in it. could you tell me the possible reasons, thanks.

Hi Hui Want,

It seems now width of the image is incorrect in the deserializer/camera output. If you make width to be half in yuv viewer, it will look correct. 

Regards,

Brijesh 

hi, Brijesh

The resolution output by camera sensor is 1920X1536, and we didn't change it in serializer and deserializer,  thanks.

Hi hui wang,

Then may be, pitch/line offset is incorrect? Are you using OpenVX example? How are you creating CSIRX node? Are you using vx_image? 

Regards,

Brijesh

hi Brijesh，

I don't know what the pitch/line offset is, our sdk is 0805, and the partial code is as follows, thanks.

Writing is an issue

for(i = 0; i < height; i++)
{
fwrite(pData, 1, width, fp);
pData += stride;
}

Can you please change above highlighted line with

for(i = 0; i < height; i++)
{

if(in_img_desc->format == VX_DF_IMAGE_UYVY)

{

fwrite(pData, 1, width*2, fp);

}

else

{
fwrite(pData, 1, width, fp);

}

pData += stride;
}

Regards,

Brijesh

Yes, we just modified it and the picture now is normal,  thank you.

you are so great.