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Found 6 results

  1. Hey all, First off, I apologize - I'm at work, now, with no access to the hardware, o-scope, etc. So all from memory for now, until I can get some time at home.... NOTE: All development being done under Xilinx ISE 14.7 WebPack. Target platform is an Opal Kelly XEM3005 (Xilinx Spartan 3E) Day 1: Wrote & sim'd Verilog to drive a PMODAD1 12b ADC. Seemed to work as planned. Day 2: Tried interfacing to an Opal Kelly XEM3005 (Spartan 3E) board with 3.3V logic & power. No joy. Funky stuff going on. Began troubleshooting. Day 3: Wrote code for Ras
  2. Dear All, I am trying to get two signals in the pmodAD1 simultaneously and send the data through the two channels in the pmodDA2 simultaneously. I got the code working for a single channel and I tried to modify it for two of them. However, even though the compilation does not give me any error, I do not see any signal out of the pmod in the oscilloscope. Please, find attached the piece of code. Any help or suggestion will be really appreciate it! Thanks a lot! 2channel main.txt 2channel pins.txt
  3. Hello to all, I am looking for help resolving a conflict between two Pmods. The Zybo board is configured in standalone (bare metal) mode. Each of Pmods was tested and worked perfectly well when running alone. It should be noted that RTCC module works also with the Pmod OLED without any issues. However, when I add PmodRTCC to the system it hangs. Debugging indicated that is does have address but no pointer to the myDevice struct. Attached is a block diagram of the system. I am sure that I missed something and hoping that people will spot it quickly. Thank you!
  4. hi, I am using PMOD AD1 and PMOD DA2 on ZC702 Eval Board but it dose not work. Befor that I used my code with spart 3a, spartan6 and zedboard and my code work for all of them but when I used that code for the zc702 it dose not work. I use clock division to send 20 Mhz : This is my code: library ieee; use ieee.std_logic_1164.ALL; --use ieee.std_logic_arith.all; use ieee.std_logic_unsigned.ALL; use ieee.numeric_std.all; Library UNISIM; use UNISIM.vcomponents.all; entity ad1_da2 is port( SCLK_P : in std_logic; SCLK_n : in std_logic; CS : out std_logic
  5. Dear All, I am planning to program a PID controller on the Basys3. For this purpose, I first tried to get a signal from a function generator into the ADC (pmodAD1) and output it through the DAC (pmodDA2). This works fine. I wanna take the digital output of the ADC, multiply or divide it by a real factor and output the result through the DAC. There might be better ways of doing this but in order to specify the re number, I have created two integer numbers and apply a division between them. This would allow me to get any "real" number that I want. constant mul_number : i
  6. hi, we are trying to read data from 4 wire resistive touch screen. can any one help us figuring this out? We have the voltage reading from touch screen, we don't know exactly how we code that reading to Pmode and implement it to nexys3. help will be appreciate!!!