bslathi19/cocotbext-eth
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Rework resets

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This commit is contained in:
Alex Forencich
2020-12-24 19:08:41 -08:00
parent a3df4ed1f9
commit 5eeffc0c68
7 changed files with 249 additions and 109 deletions
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50
cocotbext/eth/ptp.py
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@@ -30,9 +30,10 @@ import cocotb
from cocotb.triggers import RisingEdge
from .version import __version__
from .reset import Reset
class PtpClock:
class PtpClock(Reset):
def __init__(
self,
@@ -87,7 +88,9 @@ class PtpClock:
if self.pps is not None:
self.pps.setimmediatevalue(0)
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
def set_period(self, ns, fns):
self.period_ns = int(ns)
@@ -176,27 +179,36 @@ class PtpClock:
def get_ts_64_s(self):
return self.get_ts_64()*1e-9
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.ts_96_s = 0
self.ts_96_ns = 0
self.ts_96_fns = 0
self.ts_64_ns = 0
self.ts_64_fns = 0
self.drift_cnt = 0
if self.ts_96 is not None:
self.ts_96 <= 0
if self.ts_64 is not None:
self.ts_64 <= 0
if self.ts_step is not None:
self.ts_step <= 0
if self.pps is not None:
self.pps <= 0
async def _run(self):
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
self.ts_96_s = 0
self.ts_96_ns = 0
self.ts_96_fns = 0
self.ts_64_ns = 0
self.ts_64_fns = 0
self.drift_cnt = 0
if self.ts_96 is not None:
self.ts_96 <= 0
if self.ts_64 is not None:
self.ts_64 <= 0
if self.ts_step is not None:
self.ts_step <= 0
if self.pps is not None:
self.pps <= 0
continue
if self.ts_step is not None:
self.ts_step <= self.ts_updated
self.ts_updated = False