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DM8148 UVC Driver

kuan ting liu
Prodigy 50 points

Hi,

I have some problems of UVC driver on DM8148

the ezsdk verison is 5_03_00_09

the kernel version is linux-2.6.37-psp04.01.00.06.patch1

I connect a uvc webcam to DM8148

when capturing video with resolution setting to 320x240, it works successfully.

but when the resolution is set to 640x480,  it just crashed without any message when calling " ioctl(dev, VIDIOC_DQBUF, &buf) "

Please help me,

Thanks !

  • 0
    Prodigy 50 points

    Hey,

    I also tested uvc host driver using a general wecam (Logitech Webcam C500).
    Here is the result of different resolution
       160x120   Work !
       176x144   Work !
       320x240   Work !
       352x288   Work !
       640x360   Work !
       640x400   Work !
       640x480   Fail 
       800x600   Work !
       960x720   Work !
       1280x720  Fail   
       1280x800  Fail
    

    ( EZSDK : ti-ezsdk_dm814x-evm_5_03_01_15
         Kernel : linux-2.6.37-psp04.01.00.07   )
    

    it crashed without any message when calling " ioctl(dev, VIDIOC_DQBUF, &buf)  too.
    


    

    I am wondering why 640x480, 1280x720, 1280x800 got failed.
    

    Thanks!!
    


    

    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
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                          Prodigy
                        30 points
                      
    
                          
                   		
		
    
					
    Hi Guys,
    

    I also connected a freetalk webcam through the small usb available on dm814x board. Unfortunately when i connect the I get the following error
    

    root@dm814x-evm:~# usb 2-1: USB disconnect, address 2
    usb 2-1: new high speed USB device using musb-hdrc and address 3
    usb 2-1: New USB device found, idVendor=0408, idProduct=10fb
    usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
    usb 2-1: Product: FREETALK HD
    uvcvideo: Found UVC 1.00 device FREETALK HD (0408:10fb)
    uvcvideo: No streaming interface found for terminal 5.
    

    by the way I am using the new version of EZSDK. Since, I get the following error I am unable to capture video using gstreamer. Any sugggestion or help is appreciated
    

    LG,
    

    Swaroop
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
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                          Intellectual
                        680 points
                      
    
                          
                   		
		
    
					
    Hi,
    

    We are trying to capture or play video using a webcam Logitech Webcam C500. But we are unable to get the camera working.
    

    We are using 
    

    EZSDK : ti-ezsdk_dm814x-evm_5_03_01_15
         Kernel : linux-2.6.37-psp04.01.00.07
    

    Can you please explain how you tested uvc host driver using a general wecam (Logitech Webcam C500) ?
    

    Regards
    

    Pradeep
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
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