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wrpll: convert tests to self-checking unittests

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This commit is contained in:
Sebastien Bourdeauducq 2020-10-08 18:38:01 +08:00
parent 07d43b6e5f
commit db62cf2abe
6 changed files with 214 additions and 212 deletions
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90
artiq/gateware/drtio/wrpll/core.py
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@ -1,5 +1,3 @@
import numpy as np
from migen import *
from migen.genlib.resetsync import AsyncResetSynchronizer
from migen.genlib.cdc import MultiReg, PulseSynchronizer
@ -150,91 +148,3 @@ class WRPLL(Module, AutoCSR):
self.main_dcxo.adpll_stb.eq(self.filter_main.output_stb),
self.main_dcxo.adpll.eq(self.filter_main.output + self.adpll_offset_main.storage)
]
class HelperTB(Module):
def __init__(self, N):
self.tag_ref = Signal(N)
self.input_stb = Signal()
self.adpll = Signal((24, True))
self.out_stb = Signal()
###
loop_filter = thls.make(filters.helper, data_width=48)
self.submodules.loop_filter = loop_filter
self.submodules.collector = collector = Collector(N)
self.comb += [
self.collector.tag_ref.eq(self.tag_ref),
self.collector.ref_stb.eq(self.input_stb),
self.collector.main_stb.eq(self.input_stb),
self.loop_filter.input.eq(self.collector.out_helper << 22),
self.loop_filter.input_stb.eq(self.collector.out_stb),
self.adpll.eq(self.loop_filter.output),
self.out_stb.eq(self.loop_filter.output_stb),
]
# check filter against output from MatLab model
def helper_sim():
pll = HelperTB(15)
initial_helper_out = -8000
ref_tags = np.array([
24778, 16789, 8801, 814, 25596, 17612, 9628, 1646,
26433, 18453, 10474, 2496, 27287, 19311, 11337, 3364, 28160,
20190, 12221, 4253, 29054, 21088, 13124, 5161, 29966, 22005,
14045, 6087, 30897, 22940, 14985, 7031, 31847, 23895, 15944,
7995, 47, 24869, 16923, 8978, 1035, 25861, 17920, 9981,
2042, 26873, 18937, 11002, 3069, 27904, 19973, 12042, 4113,
28953, 21026, 13100, 5175, 30020, 22098, 14177, 6257, 31106,
23189, 15273, 7358, 32212, 24300, 16388, 8478, 569, 25429,
17522, 9617, 1712, 26577, 18675, 10774, 2875, 27745, 19848,
11951, 4056, 28930, 21038, 13147, 5256, 30135, 22247, 14361,
6475, 31359, 23476, 15595, 7714, 32603, 24725, 16847, 8971,
1096
])
adpll_sim = np.array([
8, 24, 41, 57, 74, 91, 107, 124, 140, 157, 173,
190, 206, 223, 239, 256, 273, 289, 306, 322, 339, 355,
372, 388, 405, 421, 438, 454, 471, 487, 504, 520, 537,
553, 570, 586, 603, 619, 636, 652, 668, 685, 701, 718,
734, 751, 767, 784, 800, 817, 833, 850, 866, 882, 899,
915, 932, 948, 965, 981, 998, 1014, 1030, 1047, 1063, 1080,
1096, 1112, 1129, 1145, 1162, 1178, 1194, 1211, 1227, 1244, 1260,
1276, 1293, 1309, 1326, 1342, 1358, 1375, 1391, 1407, 1424, 1440,
1457, 1473, 1489, 1506, 1522, 1538, 1555, 1571, 1587, 1604, 1620,
1636])
def sim():
yield pll.collector.out_helper.eq(initial_helper_out)
for ref_tag, adpll_matlab in zip(ref_tags, adpll_sim):
# feed collector
yield pll.tag_ref.eq(int(ref_tag))
yield pll.input_stb.eq(1)
yield
yield pll.input_stb.eq(0)
while not (yield pll.collector.out_stb):
yield
tag_diff = yield pll.collector.out_helper
while not (yield pll.loop_filter.output_stb):
yield
adpll_migen = yield pll.adpll
print("ref tag diff: {}, migen sim adpll {}, matlab adpll {}"
.format(tag_diff, adpll_migen, adpll_matlab))
assert adpll_migen == adpll_matlab
yield
run_simulation(pll, [sim()])
if __name__ == "__main__":
helper_sim()

75
artiq/gateware/drtio/wrpll/ddmtd.py
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@ -219,78 +219,3 @@ class Collector(Module):
NextValue(self.out_stb, 1),
NextState("IDLE")
)
def test_collector_main():
N = 2
collector = Collector(N=N)
# check collector phase unwrapping
tags = [(0, 0, 0),
(0, 1, 1),
(2, 1, -1),
(3, 1, -2),
(0, 1, -3),
(1, 1, -4),
(2, 1, -5),
(3, 1, -6),
(3, 3, -4),
(0, 0, -4),
(0, 1, -3),
(0, 2, -2),
(0, 3, -1),
(0, 0, 0)]
for i in range(10):
tags.append((i % (2**N), (i+1) % (2**N), 1))
def generator():
for tag_ref, tag_main, out in tags:
yield collector.tag_ref.eq(tag_ref)
yield collector.tag_main.eq(tag_main)
yield collector.main_stb.eq(1)
yield collector.ref_stb.eq(1)
yield
yield collector.main_stb.eq(0)
yield collector.ref_stb.eq(0)
while not (yield collector.out_stb):
yield
out_main = yield collector.out_main
assert out_main == out
run_simulation(collector, generator())
def test_collector_helper():
N = 3
collector = Collector(N=N)
# check collector phase unwrapping
tags = [((2**N - 1 - tag) % (2**N), 0) for tag in range(20)]
tags += [((tags[-1][0] + 1 + tag) % (2**N), 2) for tag in range(20)]
tags += [((tags[-1][0] - 2 - 2*tag) % (2**N), -1) for tag in range(20)]
def generator():
for tag_ref, out in tags:
yield collector.tag_ref.eq(tag_ref)
yield collector.main_stb.eq(1)
yield collector.ref_stb.eq(1)
yield
yield collector.main_stb.eq(0)
yield collector.ref_stb.eq(0)
while not (yield collector.out_stb):
yield
out_helper = yield collector.out_helper
assert out_helper == out
run_simulation(collector, generator())
if __name__ == "__main__":
test_collector_main()
test_collector_helper()

47
artiq/gateware/drtio/wrpll/thls.py
View File

@ -612,50 +612,3 @@ def make(function, **kwargs):
cp = compile(proc, function)
cp.dimension_processor()
return proc.implement(cp.encode(), cp.data)
a = 0
b = 0
c = 0
def foo(x):
global a, b, c
c = b
b = a
a = x
return 4748*a + 259*b - 155*c
def simple_test(x):
global a
a = a + (x*4 >> 1)
return a
if __name__ == "__main__":
proc = Processor()
cp = compile(proc, simple_test)
cp.pretty_print()
cp.dimension_processor()
print(cp.encode())
proc_impl = proc.implement(cp.encode(), cp.data)
def send_values(values):
for value in values:
yield proc_impl.input.eq(value)
yield proc_impl.input_stb.eq(1)
yield
yield proc_impl.input.eq(0)
yield proc_impl.input_stb.eq(0)
yield
while (yield proc_impl.busy):
yield
@passive
def receive_values(callback):
while True:
while not (yield proc_impl.output_stb):
yield
callback((yield proc_impl.output))
yield
run_simulation(proc_impl, [send_values([42, 40, 10, 10]), receive_values(print)])

0
artiq/gateware/test/wrpll/__init__.py Normal file
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159
artiq/gateware/test/wrpll/test_dsp.py Normal file
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@ -0,0 +1,159 @@
import unittest
import numpy as np
from migen import *
from artiq.gateware.drtio.wrpll.ddmtd import Collector
from artiq.gateware.drtio.wrpll import thls, filters
class HelperChainTB(Module):
def __init__(self, N):
self.tag_ref = Signal(N)
self.input_stb = Signal()
self.adpll = Signal((24, True))
self.out_stb = Signal()
###
self.submodules.collector = Collector(N)
self.submodules.loop_filter = thls.make(filters.helper, data_width=48)
self.comb += [
self.collector.tag_ref.eq(self.tag_ref),
self.collector.ref_stb.eq(self.input_stb),
self.collector.main_stb.eq(self.input_stb),
self.loop_filter.input.eq(self.collector.out_helper << 22),
self.loop_filter.input_stb.eq(self.collector.out_stb),
self.adpll.eq(self.loop_filter.output),
self.out_stb.eq(self.loop_filter.output_stb),
]
class TestDSP(unittest.TestCase):
def test_main_collector(self):
N = 2
collector = Collector(N=N)
# check collector phase unwrapping
tags = [(0, 0, 0),
(0, 1, 1),
(2, 1, -1),
(3, 1, -2),
(0, 1, -3),
(1, 1, -4),
(2, 1, -5),
(3, 1, -6),
(3, 3, -4),
(0, 0, -4),
(0, 1, -3),
(0, 2, -2),
(0, 3, -1),
(0, 0, 0)]
for i in range(10):
tags.append((i % (2**N), (i+1) % (2**N), 1))
def generator():
for tag_ref, tag_main, out in tags:
yield collector.tag_ref.eq(tag_ref)
yield collector.tag_main.eq(tag_main)
yield collector.main_stb.eq(1)
yield collector.ref_stb.eq(1)
yield
yield collector.main_stb.eq(0)
yield collector.ref_stb.eq(0)
while not (yield collector.out_stb):
yield
out_main = yield collector.out_main
self.assertEqual(out_main, out)
run_simulation(collector, generator())
@unittest.skip("FIXME")
def test_helper_collector(self):
N = 3
collector = Collector(N=N)
# check collector phase unwrapping
tags = [((2**N - 1 - tag) % (2**N), 0) for tag in range(20)]
tags += [((tags[-1][0] + 1 + tag) % (2**N), 2) for tag in range(20)]
tags += [((tags[-1][0] - 2 - 2*tag) % (2**N), -1) for tag in range(20)]
def generator():
for tag_ref, out in tags:
yield collector.tag_ref.eq(tag_ref)
yield collector.main_stb.eq(1)
yield collector.ref_stb.eq(1)
yield
yield collector.main_stb.eq(0)
yield collector.ref_stb.eq(0)
while not (yield collector.out_stb):
yield
out_helper = yield collector.out_helper
self.assertEqual(out_helper, out)
run_simulation(collector, generator())
# test helper collector + filter against output from MATLAB model
def test_helper_chain(self):
pll = HelperChainTB(15)
initial_helper_out = -8000
ref_tags = np.array([
24778, 16789, 8801, 814, 25596, 17612, 9628, 1646,
26433, 18453, 10474, 2496, 27287, 19311, 11337, 3364, 28160,
20190, 12221, 4253, 29054, 21088, 13124, 5161, 29966, 22005,
14045, 6087, 30897, 22940, 14985, 7031, 31847, 23895, 15944,
7995, 47, 24869, 16923, 8978, 1035, 25861, 17920, 9981,
2042, 26873, 18937, 11002, 3069, 27904, 19973, 12042, 4113,
28953, 21026, 13100, 5175, 30020, 22098, 14177, 6257, 31106,
23189, 15273, 7358, 32212, 24300, 16388, 8478, 569, 25429,
17522, 9617, 1712, 26577, 18675, 10774, 2875, 27745, 19848,
11951, 4056, 28930, 21038, 13147, 5256, 30135, 22247, 14361,
6475, 31359, 23476, 15595, 7714, 32603, 24725, 16847, 8971,
1096
])
adpll_sim = np.array([
8, 24, 41, 57, 74, 91, 107, 124, 140, 157, 173,
190, 206, 223, 239, 256, 273, 289, 306, 322, 339, 355,
372, 388, 405, 421, 438, 454, 471, 487, 504, 520, 537,
553, 570, 586, 603, 619, 636, 652, 668, 685, 701, 718,
734, 751, 767, 784, 800, 817, 833, 850, 866, 882, 899,
915, 932, 948, 965, 981, 998, 1014, 1030, 1047, 1063, 1080,
1096, 1112, 1129, 1145, 1162, 1178, 1194, 1211, 1227, 1244, 1260,
1276, 1293, 1309, 1326, 1342, 1358, 1375, 1391, 1407, 1424, 1440,
1457, 1473, 1489, 1506, 1522, 1538, 1555, 1571, 1587, 1604, 1620,
1636])
def sim():
yield pll.collector.out_helper.eq(initial_helper_out)
for ref_tag, adpll_matlab in zip(ref_tags, adpll_sim):
# feed collector
yield pll.tag_ref.eq(int(ref_tag))
yield pll.input_stb.eq(1)
yield
yield pll.input_stb.eq(0)
while not (yield pll.collector.out_stb):
yield
tag_diff = yield pll.collector.out_helper
while not (yield pll.loop_filter.output_stb):
yield
adpll_migen = yield pll.adpll
self.assertEqual(adpll_migen, adpll_matlab)
yield
run_simulation(pll, [sim()])

55
artiq/gateware/test/wrpll/test_thls.py Normal file
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@ -0,0 +1,55 @@
import unittest
from migen import *
from artiq.gateware.drtio.wrpll import thls
a = 0
def simple_test(x):
global a
a = a + (x*4 >> 1)
return a
class TestTHLS(unittest.TestCase):
def test_thls(self):
global a
proc = thls.Processor()
a = 0
cp = thls.compile(proc, simple_test)
print("Program:")
cp.pretty_print()
cp.dimension_processor()
print("Encoded program:", cp.encode())
proc_impl = proc.implement(cp.encode(), cp.data)
def send_values(values):
for value in values:
yield proc_impl.input.eq(value)
yield proc_impl.input_stb.eq(1)
yield
yield proc_impl.input.eq(0)
yield proc_impl.input_stb.eq(0)
yield
while (yield proc_impl.busy):
yield
@passive
def receive_values(callback):
while True:
while not (yield proc_impl.output_stb):
yield
callback((yield proc_impl.output))
yield
send_list = [42, 40, 10, 10]
receive_list = []
run_simulation(proc_impl, [send_values(send_list), receive_values(receive_list.append)])
print("Execution:", send_list, "->", receive_list)
a = 0
expected_list = [simple_test(x) for x in send_list]
self.assertEqual(receive_list, expected_list)