help in sintax for various inputs to single internal signal vector binary and decimal

[Altera_Forum]

hello,,, i have a problem,, 

i need read 8 inputs from a digital encoder position d1,d2,d3,d4,d5,d6,d7,d8 : in std_logic, each with (0 or 1 state). but my problem is convert these inputs to a single signal : std_logic_vector(7 downto 0) in a internal signal in the (binary) in the order MSB is d8. then after this vector created to other single output (deci : out std_logic) in one data in decimal, of 0 to 255 Which is its equivalent.   any idea that help me in a simple code sintax

[Altera_Forum]

--- Quote Start ---  hello,,, i have a problem,, i need read 8 inputs from a digital encoder position d1,d2,d3,d4,d5,d6,d7,d8 : in std_logic, each with (0 or 1 state). but my problem is convert these inputs to a single signal : std_logic_vector(7 downto 0) in a internal signal in the (binary) in the order MSB is d8. then after this vector created to other single output (deci : out std_logic) in one data in decimal, of 0 to 255 Which is its equivalent.   any idea that help me in a simple code sintax  --- Quote End ---    Internal_signal <= d8 & d7 & d6 & d5 & d4 & d3 & d2 & d1;  this concatenation, and it has no cost on resource.

[Altera_Forum]

--- Quote Start ---  Internal_signal <= d8 & d7 & d6 & d5 & d4 & d3 & d2 & d1;  this concatenation, and it has no cost on resource.  --- Quote End ---    Ok thank you and convert this vector of 8 bits to decimal?

[Altera_Forum]

--- Quote Start ---  Ok thank you and convert this vector of 8 bits to decimal?  --- Quote End ---    dout <= to_integer(signed(interna_data));  it needs library numeric_std

[Altera_Forum]

--- Quote Start ---  dout <= to_integer(signed(interna_data));  it needs library numeric_std  --- Quote End ---    ok,, in my code when compile, generate multiple output pins, not a single pin "deci" why?  library ieee;  use ieee.std_logic_1164.all; use ieee.numeric_std.all;  entity joystick is  port  (  d1,d2,d3,d4,d5,d6,d7,d8 : in std_logic;  deci : out integer range 0 to 255) ;  end joystick;  architecture lectura of joystick is   signal val_bin : std_logic_vector(7 downto 0);  begin    val_bin <= d8 & d7 & d6 & d5 & d4 & d3 & d2 & d1;  deci <= to_integer(signed(val_bin));  end lectura;  i can save this output in one only value for send these after data to a serial COM for using in a program in PC? my code generate various output pins.

[Altera_Forum]

Ultimately, your integer deci will have 8 bits, and hence 8 output pins. 

If you need to send it to a PC over Serial (RS232 I assume) you will need to serialise these bits - ie. send one at a time. RS232 has a protocol you must follow - and there are many examples out there on the internet.

[Altera_Forum]

Thank you, i decide my data, leave it in one internal signal of 8 bits, now read about UART examples. 

 library ieee;   use ieee.std_logic_1164.all; use ieee.numeric_std.all;   entity joystick is  port  (d1,d2,d3,d4,d5,d6,d7,d8 : in std_logic);  --deci : out integer range 0 to 255 end joystick;   architecture lectura of joystick is    signal val_bin : std_logic_vector(7 downto 0);  signal deci : integer range 0 to 255;   begin    val_bin <= d8 & d7 & d6 & d5 & d4 & d3 & d2 & d1; deci <= to_integer(unsigned(val_bin));   end lectura;