Hello,
I try to implement a Avalon ST-Video Interface in a component inside a video and image processing chain.
The chain I use (from tPad VIP Camera example) works without my component. The present processing chain is : Clocked Video Input/Color Plane Sequencer/Frame Buffer/Clipper/Scaler/Mixer/Control Synchronizer/Frame Buffer/Color Plane Sequencer/Clocked Video Input. It uses camera's frames and displays them on a screen.
For now, in order to learn how use this interface, my goal is just to have with my component a delay of one cycle between the Clocked Video Input and the Color Plane Sequencer.
Here is my VHDL code :
--- Quote Start ---
asi_in0_ready <= aso_out0_ready;
process(clk)
begin
if clk'event and clk='1' then
if asi_in0_valid='1' and aso_out0_ready='1' then
aso_out0_valid <= asi_in0_valid;
aso_out0_data <= asi_in0_data;
aso_out0_startofpacket <= asi_in0_startofpacket;
aso_out0_endofpacket <= asi_in0_endofpacket;
else
aso_out0_valid <= '0';
end if;
end if;
end process;
--- Quote End ---
The problem is just the first frame is displayed on the screen and after it is freezed. I don't understand what is wrong. Could someone help me?
Thank you in avance,
