SOM Video Input(VIP) from FPGA¶

Objective¶

Simulate a simple RGB color bar pattern at 1920 x 1080p with 24-bit RGB and embedded SYNCs for the AM57x. This is strictly following the ITU-R BT.1120-9 spec for sync codes and line timing. The goal of this is to test and demonstrate the MitySOM-AM57x / FPGA PORT A 24-bit VIP interface.

Prerequisites¶

Reference images for this test can be found here: Repositories and Pre-built Images
The reference Micro-SD card can be used: SD Card
The reference FPGA project can be found here: FPGA Reference Design

Steps¶

• The FPGA VIP core is continuously sending a test pattern over the VIP interface after it is programmed. The following will capture a raw frame containing the 1920 x 1080p 24-bit RGB image that is a color bar test pattern.
  

  yavta --skip 1 -c2 -fRGB24 -F -s1920x1080 /dev/video1 --file=frame.bin
  

  
  NOTE The above command captures two frames and discards the first frame. Since the FPGA is continuously transmitting, the first frame may be corrupt until the FIFOs sync up.
• Copy frame.bin to host computer
  

  scp frame.bin user@<IP_ADDRESS>:/home/user/frame.bin
  

• Install imagej to view the raw image
  

  sudo apt install imagej
  

• Launch imagej
  • Navigate to toolbar->file->Import->Raw...
    • Select frame.bin
    • In the popup window change the settings to the following:
      
    • Select "OK"
• The raw image should look like the following: