verilog code for sawtooth waveform

[param426]

Hi,


Can any one suggest verilog code for sawtooth wave form.?


thanks for spending time for read my question.

 

[FvM]

The question isn't clear. Verilog can't describe analog waveforms, it can at best generate a numerical variable that represents a waveform and may be output by a DAC.

A sawtooth waveform would be simply represented by a counter that's continuously incremented with overflow.

 

[param426]

Hi,

thanks for reply my question...




here iam attaching the Block diagram..
i want to generate a sawtooth wave form with 100kHz in 50MHz FPGA board to compare with the MPPT out..

MPPT output is a sinusoidal wave ....


plz FIA..

 

[FvM]

In this case, I keep my suggestion how to generate a sawtooth waveform. To modify scaling and period, you may want to change the 1 increment of a simple counter to a specific number. Obviously, it will count at 50 MHz.

 

[param426]

RAMP WAVE GENERATION
Code
`timescale 1ns / 1ps
module Ramp(Ramp,En,Clk,Rst);
output reg [7:0] Ramp;
input En,Clk,Rst;
always@(posedge Clk or posedge Rst)
begin
if (Rst)
Ramp<=0;
else begin
if (En)
begin
Ramp <= Ramp+1′b1;
end
end
end
endmodule

This is ramp wave code, could you please modify this to sawtooth wave form?

 

[FvM]

Can you explain to me the difference between ramp and sawtooth? I don't see it.