I am trying to learn how to implement image processing algorithms in an FPGA and to do this I am working with a txt file that contains a bmp image (converted using MATLAB).
I am havin problems using the textio package, so by now I am only able to read the first column of data (but not the entire row of data).
The txt file have this aspect:
1,1,0,0,0 0,1,1,1,1 1,0,0,0,0 0,0,1,1,0 1,1,1,1,1
a 5x5 matrix separated by commas. The output of the entity I have now in my simulations is
1 0 1 0 1
that corresponds to the first column. I don't understand why the code doesn't read all the line and when it ends jump to the next line.
Here is the process for read the file (I have add a variable named comma so I could detect the comma and skip it but still doesn't work ):
reading : process constant filename : string := "C:\DOCUMENTACION\PROYECTOS\Envio_salida_VGA_atraves_FPGA\MatLab\Procesado de imagen con Toolbox\prueba.txt"; file f : text open read_mode is filename; variable L : line; variable data_read : integer; variable comma : character; begin while not endfile(f) loop wait until rising_edge(clk); readline(f, L); read(L, data_read); while L = ',' loop read(L, comma); end loop; d_out <= data_read; end loop;
what is wrong with my code?