VIP issue

[Altera_Forum]

Hi, I'm working on a design based on VIP suite, in which I have a video signal coming from a camera that is mixed with a video signal from the VIP test pattern generator, using VIP Alpha blending mixer: everything works. If I replaced the VIP test pattern generator with a VIP module designed by myself, nothing works: the alpha blending mixer seems to detect a wrong frame format and the layer 1 is not visualized well. Using signal tap I can verify that the Avalon video streaming protocol of my module works fine. My question is: can I have a sample design for the source avalon video streaming to compare it with my own? I can attach the VHDL code if someone is interested 

Thanx in advance

[Altera_Forum]

please attach some code and the signaltapdata from your control-packet

[Altera_Forum]

--- Quote Start ---  please attach some code and the signaltapdata from your control-packet  --- Quote End ---    That's my state machine:  process (av_reset,av_clk,state_streaming,av_st_ready,go_bit,width_val,height_val,blend_val,width_count,height_count)  begin       if (av_reset = '1') or (go_bit = '0') then  --if (av_reset = '1') then    width_count <= "0000000000000000";  height_count <= "0000000000000000";     av_st_data_sig <= X"0000";  av_st_valid_sig <= '0';  av_st_start_pack_sig <= '0';  av_st_end_pack_sig <= '0';    state_streaming <= SEND_ID_CONTROL_PACK;    elsif (rising_edge(av_clk)) then     case state_streaming is         when SEND_ID_CONTROL_PACK =>  av_st_data_sig <= X"00FF";   av_st_end_pack_sig <= '0';    if (av_st_ready = '1') then  av_st_start_pack_sig <= '1';  av_st_valid_sig <= '1';    state_streaming <= SEND_CONTROL_1PACK;   else  av_st_start_pack_sig <= '0';  av_st_valid_sig <= '0';    state_streaming <= SEND_ID_CONTROL_PACK;  end if;       when SEND_CONTROL_1PACK =>    av_st_data_sig <= "0000" & width_val_std(11 downto 8) & "0000" & width_val_std(15 downto 12);   av_st_start_pack_sig <= '0';     if (av_st_ready = '1') then  av_st_valid_sig <= '1';  state_streaming <= SEND_CONTROL_2PACK;  else  av_st_valid_sig <= '0';  state_streaming <= SEND_CONTROL_1PACK;  end if;       when SEND_CONTROL_2PACK =>    av_st_data_sig <= "0000" & width_val_std(3 downto 0) & "0000" & width_val_std(7 downto 4);   av_st_start_pack_sig <= '0';     if (av_st_ready = '1') then  av_st_valid_sig <= '1';  state_streaming <= SEND_CONTROL_3PACK;  else  av_st_valid_sig <= '0';  state_streaming <= SEND_CONTROL_2PACK;  end if;         when SEND_CONTROL_3PACK =>    av_st_data_sig <= "0000" & height_val_std(11 downto 8) & "0000" & height_val_std(15 downto 12);   av_st_start_pack_sig <= '0';     if (av_st_ready = '1') then  av_st_valid_sig <= '1';  state_streaming <= SEND_CONTROL_4PACK;  else  av_st_valid_sig <= '0';  state_streaming <= SEND_CONTROL_3PACK;  end if;       when SEND_CONTROL_4PACK =>    av_st_data_sig <= "0000" & height_val_std(3 downto 0) & "0000" & height_val_std(7 downto 4) ;   av_st_start_pack_sig <= '0';     if (av_st_ready = '1') then  av_st_valid_sig <= '1';  state_streaming <= SEND_CONTROL_5PACK;  else  av_st_valid_sig <= '0';  state_streaming <= SEND_CONTROL_4PACK;  end if;         when SEND_CONTROL_5PACK =>    --av_st_data_sig <= X"000" & "0011";   av_st_data_sig <= X"000" & "0010";  av_st_start_pack_sig <= '0';     if (av_st_ready = '1') then  av_st_valid_sig <= '1';  av_st_end_pack_sig <= '1';   --state_streaming <= SEND_ID_VIDEO_PACK;  state_streaming <= WAIT1CYCLE;  else  av_st_valid_sig <= '0';  av_st_end_pack_sig <= '0';  state_streaming <= SEND_CONTROL_5PACK;  end if;         when WAIT1CYCLE =>  av_st_start_pack_sig <= '0';   av_st_valid_sig <= '0';  av_st_end_pack_sig <= '0';     state_streaming <= SEND_ID_VIDEO_PACK;      when SEND_ID_VIDEO_PACK =>    av_st_data_sig <= X"0000";   av_st_end_pack_sig <= '0';      --if (av_st_ready = '1') and (go_bit = '1') then  if (av_st_ready = '1') then  av_st_start_pack_sig <= '1';  av_st_valid_sig <= '1';    state_streaming <= SEND_VIDEO_PACK;  else  av_st_start_pack_sig <= '0';  av_st_valid_sig <= '0';    state_streaming <= SEND_ID_VIDEO_PACK;  end if;       when SEND_VIDEO_PACK =>      av_st_data_sig <= X"1080"; --è il nero    av_st_start_pack_sig <= '0';     if (av_st_ready = '1') then  width_count <= width_count + 1;  av_st_valid_sig <= '1';   else  width_count <= width_count;  av_st_valid_sig <= '0';  end if;     if ((width_count = (width_val - 1) ) and (height_count = (height_val - 1))) then  av_st_end_pack_sig <= '1';  else  av_st_end_pack_sig <= '0';  end if;    if ((width_count = (width_val - 1) ) and (av_st_ready = '1')) then  state_streaming <= CHECK_END_FRAME;  else  state_streaming <= SEND_VIDEO_PACK;  end if;    when CHECK_END_FRAME =>     width_count <= "0000000000000000";    av_st_valid_sig <= '0';  av_st_start_pack_sig <= '0';  av_st_end_pack_sig <= '0';    if (height_count = (height_val - 1)) then  --FRAME TERMINATO  height_count <= "0000000000000000";    state_streaming <= SEND_ID_CONTROL_PACK;  else  height_count <= height_count + 1;    state_streaming <= SEND_VIDEO_PACK;  end if;      when others =>   state_streaming <= SEND_ID_CONTROL_PACK;    end case;  end if;       end process;