frequency_scaling.v

// AstroTinker Bot : Task 1A : Frequency Scaling
/*
Instructions
-------------------
Students are not allowed to make any changes in the Module declaration.
This file is used to design a module which will scale down the 50M Clock Frequency to 3.125MHz.

Recommended Quartus Version : 20.1
The submitted project file must be 20.1 compatible as the evaluation will be done on Quartus Prime Lite 20.1.

Warning: The error due to compatibility will not be entertained.
-------------------
*/

//Frequency Scaling
//Inputs : clk_50M
//Output : clk_3125KHz


module frequency_scaling (
    input clk_50M,
    output reg clk_3125KHz
);

initial begin
    clk_3125KHz = 0;
end

//////////////////DO NOT MAKE ANY CHANGES ABOVE THIS LINE //////////////////

reg [2:0] counter = 0; // counts 0 to 7
always @ (posedge clk_50M) begin
    if (!counter) clk_3125KHz = ~clk_3125KHz; // toggles clock signal
    counter = counter + 1'b1; // increment counter // after 7 it resets to 0
end

//////////////////DO NOT MAKE ANY CHANGES BELOW THIS LINE //////////////////

endmodule