usb-tools/amaranth
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

lib.fifo: fix {r,w}_level in AsyncFIFOBuffered

Browse source
This commit is contained in:
Jaro Habiger 2020-08-18 13:11:30 +02:00 • committed by whitequark
parent c7014f84ea
commit b15f0562a6
2 changed files with 20 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

13
tests/test_lib_fifo.py
View file

@ -282,6 +282,7 @@ class FIFOFormalCase(FHDLTestCase):
self.check_async_fifo(AsyncFIFOBuffered(width=8, depth=4))
# we need this testcase because we cant do model equivalence checking on the async fifos (at the moment)
class AsyncFIFOSimCase(FHDLTestCase):
def test_async_fifo_r_level_latency(self):
fifo = AsyncFIFO(width=32, depth=10, r_domain="sync", w_domain="sync")
@ -331,6 +332,18 @@ class AsyncFIFOSimCase(FHDLTestCase):
with simulator.write_vcd("test.vcd"):
simulator.run()
def test_async_fifo_level(self):
fifo = AsyncFIFO(width=32, depth=8, r_domain="read", w_domain="write")
self.check_async_fifo_level(fifo, fill_in=5, expected_level=5)
def test_async_fifo_level_full(self):
fifo = AsyncFIFO(width=32, depth=8, r_domain="read", w_domain="write")
self.check_async_fifo_level(fifo, fill_in=10, expected_level=8)
def test_async_buffered_fifo_level(self):
fifo = AsyncFIFOBuffered(width=32, depth=9, r_domain="read", w_domain="write")
self.check_async_fifo_level(fifo, fill_in=5, expected_level=5)
def test_async_buffered_fifo_level_full(self):
fifo = AsyncFIFOBuffered(width=32, depth=9, r_domain="read", w_domain="write")
self.check_async_fifo_level(fifo, fill_in=10, expected_level=9)