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test/sawg: non trivial coarse_ref_period

This commit is contained in:
Robert Jördens 2016-12-01 16:00:06 +01:00
parent 01057dfb6d
commit 93a853a0e0
1 changed files with 20 additions and 18 deletions
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38
artiq/test/gateware/test_sawg_fe.py
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@ -4,7 +4,7 @@ import migen as mg
from numpy import int32 from numpy import int32
from artiq.coredevice import sawg from artiq.coredevice import sawg
from artiq.language import (at_mu, now_mu, delay_mu, delay, from artiq.language import (at_mu, now_mu, delay,
core as core_language) core as core_language)
from artiq.gateware.rtio.phy.sawg import Channel from artiq.gateware.rtio.phy.sawg import Channel
from artiq.sim import devices as sim_devices, time as sim_time from artiq.sim import devices as sim_devices, time as sim_time
@ -38,7 +38,8 @@ class SAWGTest(unittest.TestCase):
self.rtio_manager = RTIOManager() self.rtio_manager = RTIOManager()
self.rtio_manager.patch(sawg) self.rtio_manager.patch(sawg)
self.core = sim_devices.Core({}) self.core = sim_devices.Core({})
self.core.coarse_ref_period = 1 self.core.coarse_ref_period = 6.66666
self.t = self.core.coarse_ref_period
self.channel = mg.ClockDomainsRenamer({"rio_phy": "sys"})( self.channel = mg.ClockDomainsRenamer({"rio_phy": "sys"})(
Channel(width=16, parallelism=2)) Channel(width=16, parallelism=2))
self.driver = sawg.SAWG({"core": self.core}, channel_base=0, self.driver = sawg.SAWG({"core": self.core}, channel_base=0,
@ -53,28 +54,29 @@ class SAWGTest(unittest.TestCase):
def test_make_events(self): def test_make_events(self):
d = self.driver d = self.driver
d.offset.set(.9) d.offset.set(.9)
delay_mu(2) delay(2*self.t)
d.frequency0.set64(.1) d.frequency0.set64(.1)
d.frequency1.set64(.1) d.frequency1.set64(.1)
delay_mu(2) delay(2*self.t)
d.offset.set(0) d.offset.set(0)
v = int(round((1 << 48) * .1)) v = int(round((1 << 48) * .1 * self.t))
self.assertEqual( self.assertEqual(
self.rtio_manager.outputs, [ self.rtio_manager.outputs, [
(0., 1, 0, int(round( (0., 1, 0, int(round(
(1 << self.driver.offset.width - 1)*.9))), (1 << self.driver.offset.width - 1)*.9))),
(2., 8, 0, [int(round( (2.*self.t, 8, 0, [int(round(
(1 << self.driver.frequency0.width) / (1 << self.driver.frequency0.width) *
self.channel.parallelism*.1)), self.t/self.channel.parallelism*.1)),
0]), 0]),
(2., 3, 0, [int32(v), int32(v >> 32)]), (2.*self.t, 3, 0, [int32(v), int32(v >> 32)]),
(4., 1, 0, 0), (4.*self.t, 1, 0, 0),
]) ])
def run_channel(self, events): def run_channel(self, events):
def gen(dut, events): def gen(dut, events):
c = 0 c = 0
for time, channel, address, data in events: for time, channel, address, data in events:
time //= self.t
assert c <= time assert c <= time
while c < time: while c < time:
yield yield
@ -100,7 +102,7 @@ class SAWGTest(unittest.TestCase):
# print(int(events[-1][0]) + 1) # print(int(events[-1][0]) + 1)
mg.run_simulation(self.channel, [ mg.run_simulation(self.channel, [
gen(self.channel, events), gen(self.channel, events),
log(self.channel, data, int(events[-1][0]) + 1)], log(self.channel, data, int(events[-1][0]//self.t) + 1)],
vcd_name="dds.vcd") vcd_name="dds.vcd")
return data return data
@ -133,9 +135,9 @@ class SAWGTest(unittest.TestCase):
def test_linear(self): def test_linear(self):
d = self.driver d = self.driver
d.offset.set_coeff_mu([100, 10]) d.offset.set_coeff_mu([100, 10])
delay_mu(10) delay(10*self.t)
d.offset.set_coeff([0]) d.offset.set_coeff([0])
delay_mu(1) delay(1*self.t)
out = self.run_channel(self.rtio_manager.outputs) out = self.run_channel(self.rtio_manager.outputs)
for i in range(len(out) - 1): for i in range(len(out) - 1):
with self.subTest(i): with self.subTest(i):
@ -159,15 +161,15 @@ class SAWGTest(unittest.TestCase):
def test_smooth_linear(self): def test_smooth_linear(self):
ch = self.driver.offset ch = self.driver.offset
ch.smooth(.1, .2, 13, 1) ch.smooth(.1, .2, 13*self.t, 1)
ch.set(.2) ch.set(.2)
delay_mu(1) delay(1*self.t)
out = self.run_channel(self.rtio_manager.outputs) out = self.run_channel(self.rtio_manager.outputs)
a = int(round(.1*ch.scale)) a = int(round(.1*ch.scale))
da = a//13 da = int(round(.1*ch.scale*(1 << ch.width)//13))
for i in range(len(out) - 1): for i in range(len(out) - 1):
with self.subTest(i): with self.subTest(i):
v = a + i*da v = a + (i*da >> ch.width)
self.assertEqual(out[i], [v, v]) self.assertEqual(out[i], [v, v])
a = int(round(.2*ch.scale)) a = int(round(.2*ch.scale))
self.assertEqual(out[-1], [a, a]) self.assertEqual(out[-1], [a, a])
@ -176,7 +178,7 @@ class SAWGTest(unittest.TestCase):
ch = self.driver.offset ch = self.driver.offset
ch.smooth(.1, .2, 13, 3) ch.smooth(.1, .2, 13, 3)
ch.set(.2) ch.set(.2)
delay_mu(1) delay(1*self.t)
out = self.run_channel(self.rtio_manager.outputs) out = self.run_channel(self.rtio_manager.outputs)
out = sum(out, []) out = sum(out, [])
if False: if False: