54 lines
1.3 KiB
Plaintext
54 lines
1.3 KiB
Plaintext
package Strobe_Test;
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import Assert::*;
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import StmtFSM::*;
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import Strobe::*;
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import Testing::*;
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module mkTB();
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let testflags <- mkTestFlags();
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let cycles <- mkCycleCounter();
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// For this test, we assume we're clocked at 25MHz, and want a
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// 115_200bps strobe for a serial port. That translates to a strobe
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// every 217 cycles.
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let dut <- mkStrobe(25_000_000, 115_200);
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let want_pulse_every = 217;
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function Action check_dut(Bool want);
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return action
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if (testflags.verbose)
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$display("%0d (%0d): strobe = %0d, want %0d", cycles.all, cycles, dut, want);
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dynamicAssert(dut == want, "incorrect strobe state");
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endaction;
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endfunction
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function Stmt check_one_cycle();
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return seq
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action
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check_dut(True);
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cycles.reset();
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endaction
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while (cycles < want_pulse_every)
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check_dut(False);
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endseq;
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endfunction
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runTest(2000,
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mkTest("Strobe", seq
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dut.reset();
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repeat(3) check_one_cycle();
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// Reset should actually reset
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repeat(10) noAction;
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par
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check_dut(False);
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dut.reset();
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endpar
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repeat(3) check_one_cycle();
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endseq));
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endmodule
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endpackage
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