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Found 8 results

  1. i want to generate sine wave on dac (pmodda3)(http://www.analog.com/media/en/technical-documentation/data-sheets/AD5541A.pdf)and i am using spartan3e but there ara several warnings ,How can i fix the warnings? i loaded code and picture. help me please ---------------------------------------------------------------------------------- library IEEE; use IEEE.STD_LOGIC_1164.ALL; use ieee.std_logic_arith.all; use ieee.std_logic_signed.all; use ieee.numeric_std.all; entity kecelikalem is port( clk: in STD_LOGIC; reset : in STD_LOGIC; din:out std_logic; ldac:out std_logic:='1'; cs :out std_logic:='1'; sclk :out std_logic:='1'); end kecelikalem; architecture Behavioral of kecelikalem is signal a:integer range 0 to 3:=0; signal i : integer range 0 to 18:=0; type veri is array (2 downto 0) of std_logic_vector(15 downto 0); signal sine :veri:=("1100000000100000","0000000000001111","1100000000000000"); --signal sine :std_logic_vector(15 downto 0):="1100000000000011"; signal data :std_logic_vector(15 downto 0); signal temporal: STD_LOGIC; signal counter : integer range 0 to 124999 := 0; begin frequency_divider: process (reset, clk) begin if (reset = '1') then temporal <= '0'; counter <= 0; elsif rising_edge(clk) then if (counter = 124999) then temporal <= NOT(temporal); counter <= 0; else counter <= counter + 1; end if; end if; end process; sclk <= temporal; process (temporal) begin if falling_edge(temporal) then if(a=3) then a<=0; else data<=sine(a); if (i=18) then a<=a+1; ldac<='1'; i<=0; else if (i=17) then ldac <='0'; else if (i=16) then cs<='1'; ldac <='1'; else cs<='0'; din<=data(i); --din<=sine(i); ldac <='1'; end if ; end if; end if ; i<=i+1; end if; end if; end process; end Behavioral;
  2. Hi. I'm new to programming FPGAs. I just would like to ask, what are the recommended FPGA boards for beginners? My university currently uses the Spartan 3E Starter Board but from the reviews that I've read, the Spartan 3E is quite old already and some say that I should consider buying other FPGA boards that have more functionalities and processing power.
  3. Hello everyone... I'm new to this world and I bought a Basys2 a couple of years ago to use in my graduation. But I have never used it again since that time! Now I'm interested in discovering this world a bit more and the JTAG interface! Is it possible to write programs and load them into the FPGA board without having the ISE software?
  4. I am a newbie, just bought BASYS2 digilent FPGA Board. I have background on microcontrollers. C/C++ is no problem for me. But I am having some trouble with FPGA. Actually, not with FPGA but with Compiler and ISE. As you can see in the attachment, I configured the FPGA chip. I am using BASYS2 board. This is the implementation code: --------------------- module myModule(A, B); input wire A; output wire B; assign B = !A; endmodule ---------------------- And this is the ucf code: ----------------------- # Onboard LEDs NET "B" LOC = "M11"; NET "A" LOC = "C11"; ------------------------ As boards technical sheet says, M11 is LED 1 and C11 is BTN 2. So I want LED to flash when I unpress the button. Do you see something wrong with the code? Because it aint working. If the code should have been working, what should I do? Am I skipping something? As you see I aldready generated programming file and run. So what next? Thanks.
  5. How to use digilent sparten3E kit for implementation of code generated by system generater? i.e how to use adc dac for giving input and taking output from dac?
  6. I need to know if there is any LCD for Spartan 3E board....................... please help me
  7. Hello everyone. I have on my lab a instrument that I built a couple of years ago using a Spartan 3E Starter Board as digital controller. I'm quite happy with it, the only problem being that I'm using the parallel JTAG cable to make small changes to the system and Pc with LPT ports are becoming rare. I would like to purchase a USB cable but I'm not sure what model is better. I'm using ISE/EDK 7.1 and reluctant to change. Can anyone help me. Thanks, José Mariano
  8. I've got a Nexys2 and a Basys2. I'd like to program them under Windows 8.1. From what I can tell, the only Xilinx software that's supported under Windows 8.1 does not support the Spartan 3E chips. Is there any way to program those chips from within Windows 8.1? Thanks, Keith