tb: add chansync

tb/dvisampler/chansync.py

@@ -0,0 +1,48 @@
+from migen.fhdl.structure import *
+from migen.fhdl.module import Module
+from migen.sim.generic import *
+
+from milkymist.dvisampler.chansync import ChanSync
+
+class TB(Module):
+	def __init__(self, test_seq_it):
+		self.test_seq_it = test_seq_it
+
+		self.chansync = ChanSync()
+		self.add_submodule(self.chansync, {"pix": "sys"})
+		self.comb += self.chansync.valid_i.eq(1)
+
+	def do_simulation(self, s):
+		try:
+			de0, de1, de2 = next(self.test_seq_it)
+		except StopIteration:
+			s.interrupt = True
+			return
+
+		s.wr(self.chansync.data_in0.de, de0)
+		s.wr(self.chansync.data_in1.de, de1)
+		s.wr(self.chansync.data_in2.de, de2)
+		s.wr(self.chansync.data_in0.d, s.cycle_counter)
+		s.wr(self.chansync.data_in1.d, s.cycle_counter)
+		s.wr(self.chansync.data_in2.d, s.cycle_counter)
+
+		out0 = s.rd(self.chansync.data_out0.d)
+		out1 = s.rd(self.chansync.data_out1.d)
+		out2 = s.rd(self.chansync.data_out2.d)
+
+		print("{0:5} {1:5} {2:5}".format(out0, out1, out2))
+
+def main():
+	test_seq = [
+		(1, 1, 1),
+		(1, 1, 0),
+		(0, 0, 0),
+		(0, 0, 0),
+		(0, 0, 1),
+		(1, 1, 1),
+		(1, 1, 1),
+	]
+	tb = TB(iter(test_seq*2))
+	Simulator(tb).run()
+
+main()