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Thanks @FvM and @TrickyDicky for your useful advice.
It worked.
Here i am posting a snapshot of prbs
My modified code is
-- Engineer: Shailesh Singh
-- Module Name: prbs
-- Project Name: modulator
-- Description:
--To make it of N bit replace existing value of N with desired value...
I am trying to implement a PRBS generator as show in diagram.
My top level module is
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
---- Uncomment the following library declaration if instantiating
---- any Xilinx primitives in...
Hey please take a look at the code and tell why i am unable to control the precise position of stepper.
It keeps on running.
I want that depending upon the data received through UART it should rotate to a precise degree.
#include "xparameters.h"
#include "xgpio.h"
#include "stdio.h"
#include...
I have written code for a PID controller but i dont think it will match my requirements.
Here is the code anyway.
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
---- Uncomment the following library declaration if instantiating
----...
Hey I did take at a look at control loops. PID controller works when you have a set point as well as a measured process variable.
It works by minimising the error between two. The control block takes the error signal i.e. difference between set point and measured point.
But in my case its not...
I am trying to control the position and angle of a surface which is attached with Stepper Motor as like in Goniometers.
How using PID this can be achieved??
Yes it indeed works in closed loop.There are some more blocks in the system.(Position of the surface will provide some stimuli to those...
Radio waves at different frequencies propagate in different ways.
In free space, all electromagnetic waves (radio, light, X-rays, etc.) obey the inverse-square law which states that the power density of an electromagnetic wave is proportional to the inverse of the square of the distance from a...
Re: Stepper in Closed Loop
Well that's true for sure. But please take a look at problem in hand.
Here FPGA should take data automatically from ADC and depending upon the data received it should provide the required number of pulses to the MOTOR and all this run continously that is it would...
Hey all!
I am driving a stepper motor through FPGA ( Xilinx Virtex 2 Pro Board)
Here i have given some stepping sequences to it and it keep on running continuously.
Now i want that it should take some digital data and depending upon the data received it should rotate to some degree and stop...
Thanks for your Suggestions.
I did slowed down my clock using a dcm module (from 100MHz to 6.25Mhz).
But still i am not sure how at what frequency my output will be.
Since there must be a definite time involved in compilation and execution of code.
So please help in the same.
P.S.
Previously i...
Hey all
Mine board is Virtex2Pro. I want to drive a stepper motor from FPGA.
I am using L293D as the driver circuit.
So for that i designed a state machine which changes its output on each rising edge of the clock.
The Clock Speed is 100MHz (Internal Clock). But somehow i am not getting the...
When designing digital integrated circuits with a hardware description language, the designs are usually engineered at a higher level of abstraction than transistor level (logic families) or logic gate level. In HDLs the designer declares the registers, and describes the combination logic by...
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