Merge pull request #1175 from bridadan/serial-nc-test

Added tests that ensure correct handling of setting Serial pins to NC

libraries/tests/mbed/serial_nc_rx/main.cpp

@@ -0,0 +1,34 @@
+#include "mbed.h"
+#include "test_env.h"
+
+int main() {
+    MBED_HOSTTEST_TIMEOUT(20);
+    MBED_HOSTTEST_SELECT(serial_nc_rx_auto);
+    MBED_HOSTTEST_DESCRIPTION(Serial NC RX);
+    MBED_HOSTTEST_START("MBED_37");
+
+    Serial *pc = new Serial(NC, USBRX);
+
+    char c = pc->getc();
+
+    delete pc;
+
+    // This should be true
+    if (c == 'E') {
+      Serial *pc = new Serial(USBTX, NC);
+
+      pc->printf("RX OK - Expected\r\n");
+
+      c = pc->getc();
+
+      // This should be false/not get here
+      if (c == 'U') {
+        pc->printf("RX OK - Unexpected\r\n");
+      }
+
+      delete pc;
+    }
+
+    while (1) {
+    }
+}

libraries/tests/mbed/serial_nc_tx/main.cpp

@@ -0,0 +1,30 @@
+#include "mbed.h"
+#include "test_env.h"
+
+int main() {
+    MBED_HOSTTEST_TIMEOUT(20);
+    MBED_HOSTTEST_SELECT(serial_nc_tx_auto);
+    MBED_HOSTTEST_DESCRIPTION(Serial NC TX);
+    MBED_HOSTTEST_START("MBED_38");
+
+    // Wait until we receive start signal from host test
+    Serial *pc = new Serial(USBTX, USBRX);
+    char c = pc->getc();
+    delete pc;
+
+    // If signal is correct, start the test
+    if (c == 'S') {
+      Serial *pc = new Serial(USBTX, NC);
+      pc->printf("TX OK - Expected\r\n");
+      delete pc;
+
+      pc = new Serial(NC, USBRX);
+      pc->printf("TX OK - Unexpected\r\n");
+      delete pc;
+    }
+
+
+
+    while (1) {
+    }
+}

workspace_tools/host_tests/__init__.py

@@ -31,6 +31,8 @@ from udpecho_server_auto import UDPEchoServerTest
 from tcpecho_client_auto import TCPEchoClientTest
 from udpecho_client_auto import UDPEchoClientTest
 from wfi_auto import WFITest
+from serial_nc_rx_auto import SerialNCRXTest
+from serial_nc_tx_auto import SerialNCTXTest
 
 # Populate registry with supervising objects
 HOSTREGISTRY = HostRegistry()
@@ -48,6 +50,8 @@ HOSTREGISTRY.register_host_test("udpecho_server_auto", UDPEchoServerTest())
 HOSTREGISTRY.register_host_test("tcpecho_client_auto", TCPEchoClientTest())
 HOSTREGISTRY.register_host_test("udpecho_client_auto", UDPEchoClientTest())
 HOSTREGISTRY.register_host_test("wfi_auto", WFITest())
+HOSTREGISTRY.register_host_test("serial_nc_rx_auto", SerialNCRXTest())
+HOSTREGISTRY.register_host_test("serial_nc_tx_auto", SerialNCTXTest())
 
 ###############################################################################
 # Functional interface for test supervisor registry

workspace_tools/host_tests/serial_nc_rx_auto.py

@@ -0,0 +1,64 @@
+"""
+mbed SDK
+Copyright (c) 2011-2013 ARM Limited
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+
+import sys
+import uuid
+import time
+import string
+from sys import stdout
+
+class SerialNCRXTest():
+
+    def test(self, selftest):
+        selftest.mbed.flush();
+        selftest.mbed.serial_write("E");
+
+        strip_chars = string.whitespace + "\0"
+
+        out_str = selftest.mbed.serial_readline()
+
+        if not out_str:
+            selftest.notify("HOST: No output detected")
+            return selftest.RESULT_IO_SERIAL
+
+        out_str_stripped = out_str.strip(strip_chars)
+
+        if out_str_stripped != "RX OK - Expected":
+            selftest.notify("HOST: Unexpected output. Expected 'RX OK - Expected' but received '%s'" % out_str_stripped)
+            return selftest.RESULT_FAILURE
+
+        # Wait 0.5 seconds to ensure mbed is listening
+        time.sleep(0.5)
+
+        # Send character, mbed shouldn't receive
+        selftest.mbed.serial_write("U");
+
+        out_str = selftest.mbed.serial_readline()
+
+        # If no characters received, pass the test
+        if not out_str:
+            selftest.notify("HOST: No further output detected")
+            return selftest.RESULT_SUCCESS
+        else:
+            out_str_stripped = out_str.strip(strip_chars)
+
+            if out_str_stripped == "RX OK - Unexpected":
+                selftest.notify("HOST: Unexpected output returned indicating RX still functioning")
+            else:
+                selftest.notify("HOST: Extraneous output '%s' detected indicating unknown error" % out_str_stripped)
+
+            return selftest.RESULT_FAILURE

workspace_tools/host_tests/serial_nc_tx_auto.py

@@ -0,0 +1,59 @@
+"""
+mbed SDK
+Copyright (c) 2011-2013 ARM Limited
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+
+import sys
+import uuid
+import time
+import string
+from sys import stdout
+
+class SerialNCTXTest():
+
+    def test(self, selftest):
+        selftest.mbed.flush();
+        selftest.mbed.serial_write("S");
+
+        strip_chars = string.whitespace + "\0"
+
+        out_str = selftest.mbed.serial_readline()
+        selftest.notify("HOST: " + out_str)
+
+        if not out_str:
+            selftest.notify("HOST: No output detected")
+            return selftest.RESULT_IO_SERIAL
+
+        out_str_stripped = out_str.strip(strip_chars)
+
+        if out_str_stripped != "TX OK - Expected":
+            selftest.notify("HOST: Unexpected output. Expected 'TX OK - Expected' but received '%s'" % out_str_stripped)
+            return selftest.RESULT_FAILURE
+
+        out_str = selftest.mbed.serial_readline()
+
+        # If no characters received, pass the test
+        if not out_str:
+            selftest.notify("HOST: No further output detected")
+            return selftest.RESULT_SUCCESS
+        else:
+            out_str_stripped = out_str.strip(strip_chars)
+
+            if out_str_stripped == "TX OK - Unexpected":
+                selftest.notify("HOST: Unexpected output returned indicating TX still functioning")
+            else:
+                selftest.notify("HOST: Extraneous output '%s' detected indicating unknown error" % out_str_stripped)
+
+            return selftest.RESULT_FAILURE

workspace_tools/tests.py

@@ -585,6 +585,18 @@ TESTS = [
         "dependencies": [MBED_LIBRARIES, TEST_MBED_LIB],
         "automated": True
     },
+    {
+        "id": "MBED_37", "description": "Serial NC RX",
+        "source_dir": join(TEST_DIR, "mbed", "serial_nc_rx"),
+        "dependencies": [MBED_LIBRARIES, TEST_MBED_LIB],
+        "automated": True
+    },
+    {
+        "id": "MBED_38", "description": "Serial NC TX",
+        "source_dir": join(TEST_DIR, "mbed", "serial_nc_tx"),
+        "dependencies": [MBED_LIBRARIES, TEST_MBED_LIB],
+        "automated": True
+    },
 
     # CMSIS RTOS tests
     {