forked from M-Labs/artiq
sawg: extend unittests
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@ -1,10 +1,10 @@
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import unittest
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from numpy import int32, int64
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import migen as mg
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from artiq.coredevice import sawg
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from artiq.language import delay_mu, core as core_language
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from artiq.language import (at_mu, now_mu, delay_mu, delay,
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core as core_language)
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from artiq.gateware.rtio.phy.sawg import Channel
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from artiq.sim import devices as sim_devices, time as sim_time
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@ -37,7 +37,7 @@ class SAWGTest(unittest.TestCase):
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self.rtio_manager = RTIOManager()
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self.rtio_manager.patch(sawg)
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self.core = sim_devices.Core({})
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self.core.coarse_ref_period = 8
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self.core.coarse_ref_period = 1
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self.channel = mg.ClockDomainsRenamer({"rio_phy": "sys"})(
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Channel(width=16, parallelism=2))
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self.driver = sawg.SAWG({"core": self.core}, channel_base=0,
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@ -52,19 +52,19 @@ class SAWGTest(unittest.TestCase):
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def test_make_events(self):
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d = self.driver
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d.offset.set(.9)
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delay_mu(2*8)
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delay_mu(2)
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d.frequency0.set64(.1)
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delay_mu(2*8)
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delay_mu(2)
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d.offset.set(0)
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self.assertEqual(
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self.rtio_manager.outputs, [
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(0, 1, 0, int(round(
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(1 << self.driver.offset.width - 1)*.9))),
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(2*8, 8, 0, [int(round(
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(2, 8, 0, [int(round(
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(1 << self.driver.frequency0.width) /
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self.channel.parallelism*d.core.coarse_ref_period*.1)),
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self.channel.parallelism*.1)),
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0]),
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(4*8, 1, 0, 0),
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(4, 1, 0, 0),
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])
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def run_channel(self, events):
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@ -83,6 +83,7 @@ class SAWGTest(unittest.TestCase):
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yield rt.data.eq(int(data))
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yield rt.stb.eq(1)
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assert not (yield rt.busy)
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# print("{}: set ch {} to {}".format(time, channel, hex(data)))
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def log(dut, data, n):
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for i in range(dut.latency):
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@ -92,15 +93,16 @@ class SAWGTest(unittest.TestCase):
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data.append((yield from [(yield _) for _ in dut.o]))
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data = []
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# print(int(events[-1][0]) + 1)
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mg.run_simulation(self.channel, [
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gen(self.channel, events),
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log(self.channel, data, int(events[-1][0]//8) + 1)],
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log(self.channel, data, int(events[-1][0]) + 1)],
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vcd_name="dds.vcd")
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return sum(data, [])
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return data
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def test_run_channel(self):
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self.test_make_events()
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out = self.run_channel(self.rtio_manager.outputs)
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self.run_channel(self.rtio_manager.outputs)
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def test_coeff(self):
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import struct
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@ -131,15 +133,15 @@ class SAWGTest(unittest.TestCase):
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def test_linear(self):
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d = self.driver
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d.offset.set_coeff_mu([100, 10])
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delay_mu(10*8)
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delay_mu(10)
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d.offset.set_coeff([0])
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delay_mu(1*8)
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delay_mu(1)
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out = self.run_channel(self.rtio_manager.outputs)
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for i in range(len(out)//2):
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for i in range(len(out) - 1):
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with self.subTest(i):
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v = 100 + i*10
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self.assertEqual(out[2*i], v)
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self.assertEqual(out[2*i+1], v)
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self.assertEqual(out[i], [v, v])
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self.assertEqual(out[-1], [0, 0])
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def pack(self, v):
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n = len(v)
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@ -168,24 +170,63 @@ class SAWGTest(unittest.TestCase):
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def test_smooth_linear(self):
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ch = self.driver.offset
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ch.smooth(.1, .2, 13*ch.core.coarse_ref_period, 1)
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ch.smooth(.1, .2, 13, 1)
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ch.set(.2)
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delay_mu(1*8)
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delay_mu(1)
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out = self.run_channel(self.rtio_manager.outputs)
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a = int(round(.1*ch.scale))
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da = a//13
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for i in range(len(out)//2):
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for i in range(len(out) - 1):
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with self.subTest(i):
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v = a + i*da
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self.assertEqual(out[2*i], v)
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self.assertEqual(out[2*i+1], v)
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self.assertEqual(out[i], [v, v])
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a = int(round(.2*ch.scale))
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self.assertEqual(out[-1], [a, a])
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def test_smooth_cubic(self):
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ch = self.driver.offset
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ch.smooth(.1, .2, 13*ch.core.coarse_ref_period, 3)
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ch.smooth(.1, .2, 13, 3)
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ch.set(.2)
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delay_mu(1*8)
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delay_mu(1)
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out = self.run_channel(self.rtio_manager.outputs)
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out = sum(out, [])
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# import matplotlib.pyplot as plt
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# plt.plot(out)
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# plt.show()
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@unittest.skip("needs sim.time.TimeManager tweak for timeline jumps")
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def test_demo_2tone(self):
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MHz = 1e-3
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ns = 1.
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self.sawg0 = self.driver
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t_up = t_hold = t_down = 400*ns
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a1 = .3
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a2 = .4
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order = 3
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self.sawg0.frequency0.set(10*MHz)
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self.sawg0.phase0.set(0.)
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self.sawg0.frequency1.set64(1*MHz)
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self.sawg0.phase1.set(0.)
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self.sawg0.frequency2.set64(13*MHz)
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self.sawg0.phase2.set(0.)
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t = now_mu()
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self.sawg0.amplitude1.smooth(.0, a1, t_up, order)
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at_mu(t)
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self.sawg0.amplitude2.smooth(.0, a2, t_up, order)
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self.sawg0.amplitude1.set(a1)
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self.sawg0.amplitude2.set(a2)
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delay(t_hold)
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t = now_mu()
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self.sawg0.amplitude1.smooth(a1, .0, t_down, order)
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at_mu(t)
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self.sawg0.amplitude2.smooth(a2, .0, t_down, order)
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self.sawg0.amplitude1.set(.0)
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self.sawg0.amplitude2.set(.0)
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out = self.run_channel(self.rtio_manager.outputs)
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out = sum(out, [])
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# import matplotlib.pyplot as plt
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# plt.plot(out)
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# plt.show()
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