Hi,

I am learning verilog-AMS. When I only use sine wave module sinVarFreq, there is a sine wave in the transient analysis. If I add a digital module, please see the full code in the following snippnet, there is no sine wave in transient window. What is missing if there are both digital and analog in a project?


Thanks,






Code:

.LIB "testbench.vams"
.lib "sine_source.vams"
.ELABORATE work.testbench
.ELABORATE work.sinVarFreq
.Trace  Tran   IN(M) Min=-1.0000000e+00 Max=3.0000000e+00
.Trace  Tran   src Min=-1.0000000e+00 Max=3.0000000e+00
xsine   src  src_n   sinVarFreq
xtest_bench testbench

............
`timescale 100ps / 1ps
`include "disciplines.vams"

module testbench ();
    electrical gnd;
    ground gnd;

    reg clk;
    initial clk=0;
    wire b;

    always begin
	#10
	clk=1;
	#10
	clk=0;
	#10
	clk=1'bx;
	#10
	clk=0;
	#10
	clk=1'bz;
    end

    buffer buf0 (b, clk);
    resistor #(.r(100k)) r0 (b, gnd);
endmodule

module buffer (out, in);
    output out;
    input in;

    assign out = in;
endmodule
.............
`include "disciplines.vams"
`include "constants.vams"

module sinVarFreq(p, n);

    inout	p, n;
    electrical p, n;

    parameter real freq  = 1.0e5;
    parameter real coeff = 1.0e-3;
    real tempr;

    analog begin
	  V(p,n) <+ sin(`M_TWO_PI * freq * $abstime * 80e2);
    end
endmodule