Add MIDI loopback test and fix app_midi_simple Tx

tests/test_midi_rx.py

@@ -24,12 +24,11 @@ def test_rx(capfd, config, build_midi):
         xe = str(Path(tmpdirname) / f"{config}/test_midi_{config}.xe")
 
         midi_commands = [[0x90, 60, 81]]
-        create_midi_rx_file(1)
+        create_midi_rx_file(len(midi_commands))
         create_midi_tx_file()
 
         expected = midi_expect_rx().expect(midi_commands)
-        tester = testers.ComparisonTester(midi_expect_rx().expect(midi_commands),
-                                            ordered = True)
+        tester = testers.ComparisonTester(expected, ordered = True)
         
         rx_port = "tile[1]:XS1_PORT_1F"
         tx_port = "tile[1]:XS1_PORT_4C" # Needed so that UARTRxChecker (a transmitter) knows when to start
@@ -46,20 +45,14 @@ def test_rx(capfd, config, build_midi):
         ]
 
         simargs = ["--max-cycles", str(MAX_CYCLES)]
-        #This is just for local debug so we can capture the traces if needed. It slows xsim down so not needed
+        #This is just for local debug so we can capture the traces if needed. It slows xsim down so not good for Jenkins
         # simargs.extend(["--trace-to", "trace.txt", "--vcd-tracing", "-tile tile[1] -ports -o trace.vcd"]) 
-
-        # Print to console
-        # with capfd.disabled():
-        #     print("++++", expected, "++++")
-        #     print("****", capture, "****")
-        #     print("****", capture.split("\n"), "****")
-        #     print(xe)
-
+        
+        # with capfd.disabled(): # use to see xsim and tester output
         Pyxsim.run_with_pyxsim(
             xe,
             simthreads=simthreads,
-            timeout=1200,
+            timeout=120,
             simargs=simargs,   
         )
         capture = capfd.readouterr().out