From: Sebastien Bourdeauducq <sebastien@milkymist.org>
Date: Wed, 20 Jun 2012 16:29:03 +0000 (+0200)
Subject: examples/dataflow/structuring: test Cast
X-Git-Tag: 24jan2021_ls180~2099^2~901
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9a38c47048b2f7de0883d95342704587a228098f;p=litex.git

examples/dataflow/structuring: test Cast
---

diff --git a/examples/dataflow/structuring.py b/examples/dataflow/structuring.py
index 3963777e..591d7fc6 100644
--- a/examples/dataflow/structuring.py
+++ b/examples/dataflow/structuring.py
@@ -8,7 +8,6 @@ pack_factor = 5
 
 def source_gen():
 	for i in range(80):
-		#print("==> " + str(i))
 		yield Token("source", {"value": i})
 
 def sink_gen():
@@ -19,15 +18,23 @@ def sink_gen():
 
 def main():
 	base_layout = [("value", BV(32))]
+	packed_layout = structuring.pack_layout(base_layout, pack_factor)
+	rawbits_layout = [("value", BV(32*pack_factor))]
 	
 	source = ActorNode(SimActor(source_gen(), ("source", Source, base_layout)))
+	sink = ActorNode(SimActor(sink_gen(), ("sink", Sink, base_layout)))
+	
+	# A tortuous way of passing integer tokens.
 	packer = ActorNode(structuring.Pack(base_layout, pack_factor))
+	to_raw = ActorNode(structuring.Cast(packed_layout, rawbits_layout))
+	from_raw = ActorNode(structuring.Cast(rawbits_layout, packed_layout))
 	unpacker = ActorNode(structuring.Unpack(pack_factor, base_layout))
-	sink = ActorNode(SimActor(sink_gen(), ("sink", Sink, base_layout)))
 	
 	g = DataFlowGraph()
 	g.add_connection(source, packer)
-	g.add_connection(packer, unpacker)
+	g.add_connection(packer, to_raw)
+	g.add_connection(to_raw, from_raw)
+	g.add_connection(from_raw, unpacker)
 	g.add_connection(unpacker, sink)
 	comp = CompositeActor(g)