What is the best way to send data from Matlab to fpga? (Altera DE1)
I need it to control servo motors.

 

Why do you want to send data from Matlab to fpga?
In any case your best best is probably UART. Get a 3dollar usb->UART converter like this one and implement a UART module on the FPGA (or download one, there are loads of free available implementations) so that the FPGA can talk to the converter.
In Matlab: You open a serial object and you write to it in individual bytes.

% Serial object
s = serial('COM12','BaudRate',9600,'DataBits',8);

% Close any open objects so they don't interfere
newobjs = instrfind;
fclose(newobjs);

% Open our serial object
fopen(s);

You can write:

get(s)

To display all the parameters of the s object that you might want to configure and you do that by writing:

set(s, '<parametername>', <parametervalue> );

I have experience with reading from the port using 'fread()' but don't haven't tried writing to it. Shouldn't be too hard.
I don't know if you will need a special toolbox for the serial stuff to work on Matlab. If you run into toolbox issues then try Octave, maybe they have a serial implementation aswell.

 

Why do you want to send data from Matlab to fpga?
In any case your best best is probably UART. Get a 3dollar usb->UART converter like this one and implement a UART module on the FPGA (or download one, there are loads of free available implementations) so that the FPGA can talk to the converter.
In Matlab: You open a serial object and you write to it in individual bytes.

% Serial object
s = serial('COM12','BaudRate',9600,'DataBits',8);

% Close any open objects so they don't interfere
newobjs = instrfind;
fclose(newobjs);

% Open our serial object
fopen(s);

You can write:

get(s)

To display all the parameters of the s object that you might want to configure and you do that by writing:

set(s, '<parametername>', <parametervalue> );

I have experience with reading from the port using 'fread()' but don't haven't tried writing to it. Shouldn't be too hard.
I don't know if you will need a special toolbox for the serial stuff to work on Matlab. If you run into toolbox issues then try Octave, maybe they have a serial implementation aswell.

i need to detect some object from camera with MATLAB and then to operate servo motors..so that's why i need to send data from matlab to fpga. Do you think that there is another way to do it?

 

I don't think so. Alternatively you can use some other program to communicate with the FPGA and read/write data to a file which you will
use to write/read with matlab but you will still have to use RS232 because DE1 doesn't even have an ethernet PHY.

 

Hello,
I have used uart to usb module but no idea how matlab communicate...