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Update testbench for clocked saw2sin.sv

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Aadi Desai 2023-06-04 14:26:05 +01:00
parent 36b8ed998e
commit 00d35d90b2
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1 changed files with 3 additions and 1 deletions
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test_saw2sin.py
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@ -1,4 +1,5 @@
import cocotb import cocotb
from cocotb.clock import Clock
from cocotb.triggers import Timer from cocotb.triggers import Timer
from math import sin, cos, pi from math import sin, cos, pi
@ -6,10 +7,11 @@ from math import sin, cos, pi
async def test_new_cordic(dut): async def test_new_cordic(dut):
"""Test that cordic matches sin""" """Test that cordic matches sin"""
await cocotb.start(Clock(dut.i_clk, 10, units='ps').start())
diff = 0 diff = 0
for cycle in range(0, 65536): for cycle in range(0, 65536):
dut.i_saw.value = cycle dut.i_saw.value = cycle
await Timer(1, units='ps') await Timer(20, units='ps')
e_sin = 32768 * (sin((cycle * pi) / (2**15)) + 1) e_sin = 32768 * (sin((cycle * pi) / (2**15)) + 1)
error = float(dut.o_sin.value) - e_sin error = float(dut.o_sin.value) - e_sin
if abs(error) > 2: if abs(error) > 2: