AxiSlidingWindow: reverse order in window

src/main/scala/AxiSlidingWindow.scala

@@ -87,9 +87,9 @@ class AxiSlidingWindow[T <: Data](val cfg: AxiSlidingWindowConfiguration[T]) ext
 
     // shift data on handshake
     when (data_in.ready && data_in.valid) {
-      mem(0) := data_in.bits
-      for (i <- 1 until cfg.depth)
-        mem(i) := mem(i - 1)
+      mem(cfg.depth - 1) := data_in.bits
+      for (i <- 0 until cfg.depth - 1)
+        mem(i) := mem(i + 1)
 
       when (state === init) {
         cnt := cnt + UInt(1)

src/test/scala/AxiSlidingWindowSuite.scala

@@ -47,7 +47,7 @@ class AxiSlidingWindowTester[T <: Data](m: AxiSlidingWindowTestModule[T], isTrac
   // check all sliding windows within size of memory slave (no border handling)
   for (i <- 0 until totalSteps if noErrors) {
     val expected = (0 until m.asw.cfg.depth) map (i => (i + start) % maxData)
-    val found = (0 until m.asw.cfg.depth) map (i => peek(m.asw.io.data.bits)(i))
+    val found = (0 until m.asw.cfg.depth) map (i => peek(m.asw.io.data.bits)(m.asw.cfg.depth - i - 1))
     noErrors = expected.equals(found)
     if (!noErrors)
       println("Mismatch at step #%d: expected %s, found %s".format(start, expected.toString, found.toString))