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Ahmed Alfadhel

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Everything posted by Ahmed Alfadhel

  1. I am beginner to Neural Network (NN) design, could you instruct me about how to implement a linear activation function by VHDL ? I need a simple example of implementation a linear activation function by VHDL. Thanks
  2. @user3416 Hi, You need to create your block diagram (DDS IP, PmodDA3 IP, GPIO IP, Microblaze,....) , then you have to embed C code using XSDK (the C code for instructing the IPs how to interact with each other). Yon can benefit from my project resources here: https://www.hackster.io/ahmed-alfadhel/frequency-hopping-spread-spectrum-fhss-system-c72dde
  3. Hi @D@n Thank you for your perfect analyzing and solution to my issue . I just toggled the MSB in each written Byte and I got the sinewave finally. However, I wondered , since in the data sheets (AD5541A , AD7303) is mentioned I have to use operation amplifier in order to get a bipolar signal ! Thanks again.
  4. Hi , I am using DDS IP core to visualize a 5 kHz sine wave signal. At first I simulated the IP core using Vivado simulator . I used 25 MHz clock signal. I got a sine wave signal as shown in the first attached picture. When I changed the Radix from "signed data type" to "unsigned data type" the sine wave will be like in the second attached picture. And when I implemented my design on my ARTY 7 , and connected the output of Pmod DA3 to the oscilloscope , I got a signal similar to that in the second attached picture ! As shown in the third attached picture . I changed all the intended data types in my program from u16 to s16 but the no thing is changed ! Pls , I am looking forward your help. How to visualize a DDS sine wave properly using Pmod DA3 ? Thanks.
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