/
test_build_res.py
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/
test_build_res.py
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# nmigen: UnusedElaboratable=no
from nmigen import *
from nmigen.hdl.rec import *
from nmigen.lib.io import *
from nmigen.build.dsl import *
from nmigen.build.res import *
from .utils import *
class ResourceManagerTestCase(FHDLTestCase):
def setUp(self):
self.resources = [
Resource("clk100", 0, DiffPairs("H1", "H2", dir="i"), Clock(100e6)),
Resource("clk50", 0, Pins("K1"), Clock(50e6)),
Resource("user_led", 0, Pins("A0", dir="o")),
Resource("i2c", 0,
Subsignal("scl", Pins("N10", dir="o")),
Subsignal("sda", Pins("N11"))
)
]
self.connectors = [
Connector("pmod", 0, "B0 B1 B2 B3 - -"),
]
self.cm = ResourceManager(self.resources, self.connectors)
def test_basic(self):
self.cm = ResourceManager(self.resources, self.connectors)
self.assertEqual(self.cm.resources, {
("clk100", 0): self.resources[0],
("clk50", 0): self.resources[1],
("user_led", 0): self.resources[2],
("i2c", 0): self.resources[3]
})
self.assertEqual(self.cm.connectors, {
("pmod", 0): self.connectors[0],
})
def test_add_resources(self):
new_resources = [
Resource("user_led", 1, Pins("A1", dir="o"))
]
self.cm.add_resources(new_resources)
self.assertEqual(self.cm.resources, {
("clk100", 0): self.resources[0],
("clk50", 0): self.resources[1],
("user_led", 0): self.resources[2],
("i2c", 0): self.resources[3],
("user_led", 1): new_resources[0]
})
def test_lookup(self):
r = self.cm.lookup("user_led", 0)
self.assertIs(r, self.cm.resources["user_led", 0])
def test_request_basic(self):
r = self.cm.lookup("user_led", 0)
user_led = self.cm.request("user_led", 0)
self.assertIsInstance(user_led, Pin)
self.assertEqual(user_led.name, "user_led_0")
self.assertEqual(user_led.width, 1)
self.assertEqual(user_led.dir, "o")
ports = list(self.cm.iter_ports())
self.assertEqual(len(ports), 1)
self.assertEqual(list(self.cm.iter_port_constraints()), [
("user_led_0__io", ["A0"], {})
])
def test_request_with_dir(self):
i2c = self.cm.request("i2c", 0, dir={"sda": "o"})
self.assertIsInstance(i2c, Record)
self.assertIsInstance(i2c.sda, Pin)
self.assertEqual(i2c.sda.dir, "o")
def test_request_tristate(self):
i2c = self.cm.request("i2c", 0)
self.assertEqual(i2c.sda.dir, "io")
ports = list(self.cm.iter_ports())
self.assertEqual(len(ports), 2)
scl, sda = ports
self.assertEqual(ports[1].name, "i2c_0__sda__io")
self.assertEqual(ports[1].width, 1)
scl_info, sda_info = self.cm.iter_single_ended_pins()
self.assertIs(scl_info[0], i2c.scl)
self.assertIs(scl_info[1].io, scl)
self.assertEqual(scl_info[2], {})
self.assertEqual(scl_info[3], False)
self.assertIs(sda_info[0], i2c.sda)
self.assertIs(sda_info[1].io, sda)
self.assertEqual(list(self.cm.iter_port_constraints()), [
("i2c_0__scl__io", ["N10"], {}),
("i2c_0__sda__io", ["N11"], {})
])
def test_request_diffpairs(self):
clk100 = self.cm.request("clk100", 0)
self.assertIsInstance(clk100, Pin)
self.assertEqual(clk100.dir, "i")
self.assertEqual(clk100.width, 1)
ports = list(self.cm.iter_ports())
self.assertEqual(len(ports), 2)
p, n = ports
self.assertEqual(p.name, "clk100_0__p")
self.assertEqual(p.width, clk100.width)
self.assertEqual(n.name, "clk100_0__n")
self.assertEqual(n.width, clk100.width)
clk100_info, = self.cm.iter_differential_pins()
self.assertIs(clk100_info[0], clk100)
self.assertIs(clk100_info[1].p, p)
self.assertIs(clk100_info[1].n, n)
self.assertEqual(clk100_info[2], {})
self.assertEqual(clk100_info[3], False)
self.assertEqual(list(self.cm.iter_port_constraints()), [
("clk100_0__p", ["H1"], {}),
("clk100_0__n", ["H2"], {}),
])
def test_request_inverted(self):
new_resources = [
Resource("cs", 0, PinsN("X0")),
Resource("clk", 0, DiffPairsN("Y0", "Y1")),
]
self.cm.add_resources(new_resources)
cs = self.cm.request("cs")
clk = self.cm.request("clk")
cs_io, clk_p, clk_n = self.cm.iter_ports()
cs_info, = self.cm.iter_single_ended_pins()
self.assertIs(cs_info[0], cs)
self.assertIs(cs_info[1].io, cs_io)
self.assertEqual(cs_info[2], {})
self.assertEqual(cs_info[3], True)
clk_info, = self.cm.iter_differential_pins()
self.assertIs(clk_info[0], clk)
self.assertIs(clk_info[1].p, clk_p)
self.assertIs(clk_info[1].n, clk_n)
self.assertEqual(clk_info[2], {})
self.assertEqual(clk_info[3], True)
def test_request_raw(self):
clk50 = self.cm.request("clk50", 0, dir="-")
self.assertIsInstance(clk50, Record)
self.assertIsInstance(clk50.io, Signal)
ports = list(self.cm.iter_ports())
self.assertEqual(len(ports), 1)
self.assertIs(ports[0], clk50.io)
def test_request_raw_diffpairs(self):
clk100 = self.cm.request("clk100", 0, dir="-")
self.assertIsInstance(clk100, Record)
self.assertIsInstance(clk100.p, Signal)
self.assertIsInstance(clk100.n, Signal)
ports = list(self.cm.iter_ports())
self.assertEqual(len(ports), 2)
self.assertIs(ports[0], clk100.p)
self.assertIs(ports[1], clk100.n)
def test_request_via_connector(self):
self.cm.add_resources([
Resource("spi", 0,
Subsignal("ss", Pins("1", conn=("pmod", 0))),
Subsignal("clk", Pins("2", conn=("pmod", 0))),
Subsignal("miso", Pins("3", conn=("pmod", 0))),
Subsignal("mosi", Pins("4", conn=("pmod", 0))),
)
])
spi0 = self.cm.request("spi", 0)
self.assertEqual(list(self.cm.iter_port_constraints()), [
("spi_0__ss__io", ["B0"], {}),
("spi_0__clk__io", ["B1"], {}),
("spi_0__miso__io", ["B2"], {}),
("spi_0__mosi__io", ["B3"], {}),
])
def test_request_via_nested_connector(self):
new_connectors = [
Connector("pmod_extension", 0, "1 2 3 4 - -", conn=("pmod", 0)),
]
self.cm.add_connectors(new_connectors)
self.cm.add_resources([
Resource("spi", 0,
Subsignal("ss", Pins("1", conn=("pmod_extension", 0))),
Subsignal("clk", Pins("2", conn=("pmod_extension", 0))),
Subsignal("miso", Pins("3", conn=("pmod_extension", 0))),
Subsignal("mosi", Pins("4", conn=("pmod_extension", 0))),
)
])
spi0 = self.cm.request("spi", 0)
self.assertEqual(list(self.cm.iter_port_constraints()), [
("spi_0__ss__io", ["B0"], {}),
("spi_0__clk__io", ["B1"], {}),
("spi_0__miso__io", ["B2"], {}),
("spi_0__mosi__io", ["B3"], {}),
])
def test_request_clock(self):
clk100 = self.cm.request("clk100", 0)
clk50 = self.cm.request("clk50", 0, dir="i")
clk100_port_p, clk100_port_n, clk50_port = self.cm.iter_ports()
self.assertEqual(list(self.cm.iter_clock_constraints()), [
(clk100.i, clk100_port_p, 100e6),
(clk50.i, clk50_port, 50e6)
])
def test_add_clock(self):
i2c = self.cm.request("i2c")
self.cm.add_clock_constraint(i2c.scl.o, 100e3)
self.assertEqual(list(self.cm.iter_clock_constraints()), [
(i2c.scl.o, None, 100e3)
])
def test_wrong_resources(self):
with self.assertRaisesRegex(TypeError, r"^Object 'wrong' is not a Resource$"):
self.cm.add_resources(['wrong'])
def test_wrong_resources_duplicate(self):
with self.assertRaisesRegex(NameError,
(r"^Trying to add \(resource user_led 0 \(pins o A1\)\), but "
r"\(resource user_led 0 \(pins o A0\)\) has the same name and number$")):
self.cm.add_resources([Resource("user_led", 0, Pins("A1", dir="o"))])
def test_wrong_connectors(self):
with self.assertRaisesRegex(TypeError, r"^Object 'wrong' is not a Connector$"):
self.cm.add_connectors(['wrong'])
def test_wrong_connectors_duplicate(self):
with self.assertRaisesRegex(NameError,
(r"^Trying to add \(connector pmod 0 1=>1 2=>2\), but "
r"\(connector pmod 0 1=>B0 2=>B1 3=>B2 4=>B3\) has the same name and number$")):
self.cm.add_connectors([Connector("pmod", 0, "1 2")])
def test_wrong_lookup(self):
with self.assertRaisesRegex(ResourceError,
r"^Resource user_led#1 does not exist$"):
r = self.cm.lookup("user_led", 1)
def test_wrong_clock_signal(self):
with self.assertRaisesRegex(TypeError,
r"^Object None is not a Signal$"):
self.cm.add_clock_constraint(None, 10e6)
def test_wrong_clock_frequency(self):
with self.assertRaisesRegex(TypeError,
r"^Frequency must be a number, not None$"):
self.cm.add_clock_constraint(Signal(), None)
def test_wrong_request_duplicate(self):
with self.assertRaisesRegex(ResourceError,
r"^Resource user_led#0 has already been requested$"):
self.cm.request("user_led", 0)
self.cm.request("user_led", 0)
def test_wrong_request_duplicate_physical(self):
self.cm.add_resources([
Resource("clk20", 0, Pins("H1", dir="i")),
])
self.cm.request("clk100", 0)
with self.assertRaisesRegex(ResourceError,
(r"^Resource component clk20_0 uses physical pin H1, but it is already "
r"used by resource component clk100_0 that was requested earlier$")):
self.cm.request("clk20", 0)
def test_wrong_request_with_dir(self):
with self.assertRaisesRegex(TypeError,
(r"^Direction must be one of \"i\", \"o\", \"oe\", \"io\", or \"-\", "
r"not 'wrong'$")):
user_led = self.cm.request("user_led", 0, dir="wrong")
def test_wrong_request_with_dir_io(self):
with self.assertRaisesRegex(ValueError,
(r"^Direction of \(pins o A0\) cannot be changed from \"o\" to \"i\"; direction "
r"can be changed from \"io\" to \"i\", \"o\", or \"oe\", or from anything "
r"to \"-\"$")):
user_led = self.cm.request("user_led", 0, dir="i")
def test_wrong_request_with_dir_dict(self):
with self.assertRaisesRegex(TypeError,
(r"^Directions must be a dict, not 'i', because \(resource i2c 0 \(subsignal scl "
r"\(pins o N10\)\) \(subsignal sda \(pins io N11\)\)\) "
r"has subsignals$")):
i2c = self.cm.request("i2c", 0, dir="i")
def test_wrong_request_with_wrong_xdr(self):
with self.assertRaisesRegex(ValueError,
r"^Data rate of \(pins o A0\) must be a non-negative integer, not -1$"):
user_led = self.cm.request("user_led", 0, xdr=-1)
def test_wrong_request_with_xdr_dict(self):
with self.assertRaisesRegex(TypeError,
r"^Data rate must be a dict, not 2, because \(resource i2c 0 \(subsignal scl "
r"\(pins o N10\)\) \(subsignal sda \(pins io N11\)\)\) "
r"has subsignals$"):
i2c = self.cm.request("i2c", 0, xdr=2)
def test_wrong_clock_constraint_twice(self):
clk100 = self.cm.request("clk100")
with self.assertRaisesRegex(ValueError,
(r"^Cannot add clock constraint on \(sig clk100_0__i\), which is already "
r"constrained to 100000000\.0 Hz$")):
self.cm.add_clock_constraint(clk100.i, 1e6)