def do_finalize(self, fragment):
# Add the CRG
crg = CRG(self.request("clk50"))
fragment += crg.get_fragment()
clocks = {
"clk50": 50.0,
"clk12": 12.0,
("ulpi", "clk"): 60.0,
("ftdi", "clk"): 60.0
}
# Make sure init_b is used / added to the UCF
self.request("init_b")
for name, mhz in clocks.items():
period = 1000.0 / mhz
try:
if isinstance(name, tuple):
clk = getattr(self.lookup_request(name[0]), name[1])
else:
clk = self.lookup_request(name)
self.add_platform_command("""
NET "{clk}" TNM_NET = "GRP{clk}";
TIMESPEC "TS{clk}" = PERIOD "GRP{clk}" %f ns HIGH 50%%;
""" % period, clk=clk)
except ConstraintError:
pass
def do_finalize(self, fragment):
# Add the CRG
crg = CRG(self.request("clk50"))
fragment += crg.get_fragment()
clocks = {
"clk50": 50.0,
"clk12": 12.0,
("ulpi", "clk"): 60.0,
("ftdi", "clk"): 60.0
}
# Make sure init_b is used / added to the UCF
self.request("init_b")
for name, mhz in clocks.items():
period = 1000.0 / mhz
try:
if isinstance(name, tuple):
clk = getattr(self.lookup_request(name[0]), name[1])
else:
clk = self.lookup_request(name)
self.add_platform_command("""
NET "{clk}" TNM_NET = "GRP{clk}";
TIMESPEC "TS{clk}" = PERIOD "GRP{clk}" %f ns HIGH 50%%;
""" % period,
clk=clk)
except ConstraintError:
pass
def finalize(self, fragment, *args, **kwargs):
if self.finalized:
raise ConstraintError("Already finalized")
# if none exists, create a default clock domain and drive it
if not fragment.clock_domains:
if not hasattr(self, "default_clk_name"):
raise NotImplementedError(
"No default clock and no clock domain defined")
crg = CRG(self.request(self.default_clk_name))
fragment += crg.get_fragment()
self.do_finalize(fragment, *args, **kwargs)
self.finalized = True
def finalize(self, fragment, *args, **kwargs):
if self.finalized:
raise ConstraintError("Already finalized")
# if none exists, create a default clock domain and drive it
if not fragment.clock_domains:
if not hasattr(self, "default_clk_name"):
raise NotImplementedError(
"No default clock and no clock domain defined")
crg = CRG(self.request(self.default_clk_name))
fragment += crg.get_fragment()
self.do_finalize(fragment, *args, **kwargs)
self.finalized = True
