From c5a854dcb77e8e0159f79db74340742ab00431b7 Mon Sep 17 00:00:00 2001
From: Casper Cromjongh <casper.cromjongh@hotmail.com>
Date: Wed, 20 Mar 2024 12:47:48 +0100
Subject: [PATCH 1/2] Add support for 0-bit logic types.

This can happen when the direct child structure e.g. only consists of sub-streams.
---
 src/main/scala/nl/tudelft/tydi_chisel/TydiLib.scala | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/main/scala/nl/tudelft/tydi_chisel/TydiLib.scala b/src/main/scala/nl/tudelft/tydi_chisel/TydiLib.scala
index 85c91f5..71f4385 100644
--- a/src/main/scala/nl/tudelft/tydi_chisel/TydiLib.scala
+++ b/src/main/scala/nl/tudelft/tydi_chisel/TydiLib.scala
@@ -380,8 +380,16 @@ class PhysicalStream(private val e: TydiEl, n: Int = 1, d: Int = 0, c: Int, priv
     this.last    := bundle.last.asUInt
     this.valid   := bundle.valid
     bundle.ready := this.ready
-    this.data    := bundle.getDataConcat
-    this.user    := bundle.getUserConcat
+    if (elWidth > 0) {
+      this.data := bundle.getDataConcat
+    } else {
+      this.data := DontCare
+    }
+    if (userElWidth > 0) {
+      this.user := bundle.getUserConcat
+    } else {
+      this.user := DontCare
+    }
   }
 
   def :=(bundle: PhysicalStream): Unit = {

From b0733289a489f9be4844ac9eec1f10fc78696cd2 Mon Sep 17 00:00:00 2001
From: Casper Cromjongh <casper.cromjongh@hotmail.com>
Date: Wed, 20 Mar 2024 12:48:02 +0100
Subject: [PATCH 2/2] Fix TimestampedMessage while we're at it.

---
 .../timestamped_message/TimestampedMessage.scala     | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/main/scala/nl/tudelft/tydi_chisel/examples/timestamped_message/TimestampedMessage.scala b/src/main/scala/nl/tudelft/tydi_chisel/examples/timestamped_message/TimestampedMessage.scala
index 01b6e1d..a52b039 100644
--- a/src/main/scala/nl/tudelft/tydi_chisel/examples/timestamped_message/TimestampedMessage.scala
+++ b/src/main/scala/nl/tudelft/tydi_chisel/examples/timestamped_message/TimestampedMessage.scala
@@ -54,18 +54,18 @@ class TimestampedMessageModuleOut extends TydiModule {
   //   We have 1 lane in this case
 
   // Top stream
-  stream.valid := true.B
-  stream.strb  := 1.U
-  stream.stai  := 0.U
-  stream.endi  := 1.U
-  stream.last  := 0.U
+  stream.valid   := true.B
+  stream.strb    := 1.U
+  stream.stai    := 0.U
+  stream.endi    := 1.U
+  stream.last(0) := 0.U
 
   // Child stream
   stream.el.message.valid := true.B
   stream.el.message.strb  := 1.U
   stream.el.message.stai  := 0.U
   stream.el.message.endi  := 1.U
-  stream.el.message.last  := 0.U
+  stream.el.message.last.foreach(_ := 0.U)
 }
 
 class TimestampedMessageModuleIn extends TydiModule {