Added flow control test

Since this requires a separate serial port connection, added this as a
new attribute of the MUTs.

Author: Bogdan Marinescu

libraries/tests/mbed/echo_flow_control/main.cpp

@@ -0,0 +1,34 @@
+#include "mbed.h"
+
+#if defined(TARGET_LPC1768)
+#define UART_TX             p9
+#define UART_RX             p10
+#define FLOW_CONTROL_RTS    p11
+#define FLOW_CONTROL_CTS    p12
+#define RTS_CHECK_PIN       p13
+#else
+#error This test is not supported on this target
+#endif
+
+Serial pc(UART_TX, UART_RX);
+
+#ifdef RTS_CHECK_PIN
+InterruptIn in(RTS_CHECK_PIN);
+DigitalOut led(LED1);
+static void checker(void) {
+  led = !led;
+}
+#endif
+
+int main() {
+    char buf[256];
+
+    pc.set_flow_control(Serial::RTSCTS, FLOW_CONTROL_RTS, FLOW_CONTROL_CTS);
+#ifdef RTS_CHECK_PIN    
+    in.fall(checker);
+#endif    
+    while (1) {
+        pc.gets(buf, 256);
+        pc.printf("%s", buf);
+    }
+}

workspace_tools/host_tests/echo_flow_control.py

@@ -0,0 +1,48 @@
+"""
+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.
+"""
+from host_test import Test
+
+
+class EchoTest(Test):
+    def __init__(self):
+        Test.__init__(self)
+        self.mbed.init_serial()
+        self.mbed.extra_serial.rtscts = True
+        self.mbed.reset()
+    
+    def test(self):
+        self.mbed.flush()
+        self.notify("Starting the ECHO test")
+        TEST="longer serial test"
+        check = True
+        for i in range(1, 100):
+            self.mbed.extra_serial.write(TEST + "\n")
+            l = self.mbed.extra_serial.readline().strip()
+            if not l: continue
+            
+            if l != TEST:
+                check = False
+                self.notify('"%s" != "%s"' % (l, TEST))
+            else:
+                if (i % 10) == 0:
+                    self.notify('.')
+        
+        return check
+
+
+if __name__ == '__main__':
+    EchoTest().run()

workspace_tools/host_tests/host_test.py

@@ -38,6 +38,9 @@ def __init__(self):
 
         parser.add_option("-t", "--timeout", dest="timeout",
                       help="Timeout", metavar="TIMEOUT")
+
+        parser.add_option("-e", "--extra", dest="extra",
+                      help="Extra serial port (used by some tests)", metavar="EXTRA")
 
         (self.options, _) = parser.parse_args()
 
@@ -46,14 +49,19 @@ def __init__(self):
 
         self.port = self.options.port
         self.disk = self.options.disk
+        self.extra_port = self.options.extra
+        self.extra_serial = None
         self.serial = None
         self.timeout = 10 if self.options.timeout is None else self.options.timeout
 
         print 'Mbed: "%s" "%s"' % (self.port, self.disk)
 
-    def init_serial(self, baud=9600):
+    def init_serial(self, baud=9600, extra_baud=9600):
         self.serial = Serial(self.port, timeout = 1)
         self.serial.setBaudrate(baud)
+        if self.extra_port:
+            self.extra_serial = Serial(self.extra_port, timeout = 1)
+            self.extra_serial.setBaudrate(extra_baud)
         self.flush()
 
     def reset(self):
@@ -64,7 +72,9 @@ def reset(self):
     def flush(self):
         self.serial.flushInput()
         self.serial.flushOutput()
-
+        if self.extra_serial:
+            self.extra_serial.flushInput()
+            self.extra_serial.flushOutput()
 
 class Test:
     def __init__(self):

workspace_tools/server.py

@@ -57,9 +57,9 @@ def stop(self):
             pass
 
 
-def run_host_test(client, name, disk, port, duration):
+def run_host_test(client, name, disk, port, duration, extra_serial):
     print "{%s}"  % name,
-    cmd = ["python", "%s.py" % name, '-p', port, '-d', disk, '-t', str(duration)]
+    cmd = ["python", "%s.py" % name, '-p', port, '-d', disk, '-t', str(duration), "-e", extra_serial]
     proc = Popen(cmd, stdout=PIPE, cwd=HOST_TESTS)
     obs = ProcessObserver(proc)
     start = time()
@@ -144,6 +144,7 @@ def handle(self):
 
         disk = mut['disk']
         port = mut['port']
+        extra_serial = mut.get('extra_serial', "")
         target = TARGET_MAP[mut['mcu']]
 
         # Program
@@ -169,7 +170,7 @@ def handle(self):
 
         # Host test
         self.request.setblocking(0)
-        result = run_host_test(self.request, test.host_test, disk, port, duration)
+        result = run_host_test(self.request, test.host_test, disk, port, duration, extra_serial)
         self.send_result(result)
 
 

workspace_tools/tests.py

@@ -203,6 +203,15 @@
         "dependencies": [MBED_LIBRARIES, TEST_MBED_LIB],
         "automated": True,
     },
+    {
+        "id": "MBED_A22", "description": "Serial echo with RTS/CTS flow control",
+        "source_dir": join(TEST_DIR, "mbed", "echo_flow_control"),
+        "dependencies": [MBED_LIBRARIES],
+        "automated": "True",
+        "host_test": "echo_flow_control",
+        "mcu": ["LPC1768"],
+        "peripherals": ["extra_serial"]
+    },
 
     # Size benchmarks
     {
@@ -392,7 +401,7 @@
         "dependencies": [MBED_LIBRARIES],
         "mcu": ["LPC1768", "LPC4088"]
     },	
- 
+
     # CMSIS RTOS tests
     {
         "id": "CMSIS_RTOS_1", "description": "Basic",