I faced issue with code VHDL for encoder and decoder OPPM i get it input but no output appear aim already working on " ISE Project Navigator" and Quartus II 9.0 Web Edition" , when run code no error appear .. can find the encoder OPPM code i need help to solved the issue
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--OFFSET PPM encoder--
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library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.STD_LOGIC_UNSIGNED.all;
ENTITY OPPM_Encoder IS
port( sin : IN STD_LOGIC;
clk_3bit : IN STD_LOGIC;
clk_4bit : IN STD_LOGIC;
reset : IN STD_LOGIC;
dout : OUT STD_LOGIC
);
end OPPM_Encoder;
architecture behaviour of OPPM_Encoder IS
SIGNAL control1 : STD_LOGIC_VECTOR(2 downto 0); --:= "100";-- changing this value 1 position changes the op as not synced 24 bit output since taking 6 blocks of 3 instead of 5.
SIGNAL sipo : STD_LOGIC_VECTOR(14 downto 0) :=
"000000000000000";
SIGNAL piso : STD_LOGIC_VECTOR(3 downto 0);
SIGNAL reg1 : STD_LOGIC_VECTOR(2 downto 0) := "000";
-- SIGNAL D2 : STD_LOGIC_VECTOR(2 downto 0) := "000";
SIGNAL load_reg : STD_LOGIC;
SIGNAL initflag1 : STD_LOGIC := '1'; -- used to initialise/sync input stream- once detected reset to 0 under synced operation
BEGIN
coder_input: PROCESS -- loads the input data using the 3 bit clock
BEGIN
WAIT UNTIL (clk_3bit'EVENT AND clk_3bit = '1');
control1
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