occheung/artiq
1
0
Fork 0
forked from M-Labs/artiq
Code Pull Requests Activity

fastlink: add fastino test

Browse Source
This commit is contained in:
Robert Jördens 2020-10-18 17:11:09 +00:00
parent eecd97ce4c
commit 139385a571
1 changed files with 46 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
artiq/gateware/test/rtio/test_fastlink.py
View File

@ -23,12 +23,13 @@ class TestPhaser(unittest.TestCase):
clk = (clk << 2) & 0xff
clk |= (yield self.dut.data[0])
if clk == 0x0f:
marker = (marker << 1) & 0x7f
marker |= (yield self.dut.data[1]) & 1
if marker >> 1 == 0x01:
if marker == 0x01:
stb += 1
if stb >= 3:
break
# 10/2 + 1 marker bits
marker = (marker << 1) & 0x3f
marker |= (yield self.dut.data[1]) & 1
yield
def test_frame(self):
@ -41,3 +42,45 @@ class TestPhaser(unittest.TestCase):
self.assertEqual([d[0] for d in frame], [0, 0, 3, 3] * 10)
self.assertEqual([d[1] & 1 for d in frame[4*4 - 1:10*4 - 1:4]],
[0, 0, 0, 0, 0, 1])
class TestFastino(unittest.TestCase):
def setUp(self):
self.dut = SerDes(
n_data=8, t_clk=7, d_clk=0b1100011,
n_frame=14, n_crc=12, poly=0x80f)
def test_init(self):
pass
def record_frame(self, frame):
clk = 0
marker = 0
stb = 0
while True:
if stb == 2:
frame.append((yield self.dut.data))
clk = (clk << 2) & 0xff
clk |= (yield self.dut.data[0])
if clk in (0b11100011, 0b11000111):
if marker == 0x01:
stb += 1
if stb >= 3:
break
# 14/2 + 1 marker bits
marker = (marker << 1) & 0xff
if clk & 0b100:
marker |= (yield self.dut.data[1]) >> 1
else:
marker |= (yield self.dut.data[1]) & 1
yield
def test_frame(self):
frame = []
self.dut.comb += self.dut.payload.eq((1 << len(self.dut.payload)) - 1)
run_simulation(self.dut, self.record_frame(frame),
clocks={n: 2 for n in ["sys", "rio", "rio_phy"]},
vcd_name="fastlink.vcd")
self.assertEqual(len(frame), 7*14//2)
self.assertEqual([d[0] for d in frame], [3, 0, 1, 3, 2, 0, 3] * 7)
print(frame)