Diff: test/stress_tests/cdc_stress_test.py

Revision:

0:01f31e923fe2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/stress_tests/cdc_stress_test.py	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,90 @@
+#
+# DAPLink Interface Firmware
+# Copyright (c) 2016-2017, ARM Limited, All Rights Reserved
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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 mbed_lstools
+import threading
+import time
+import serial
+
+should_exit = False
+exit_cond = threading.Condition()
+print_mut = threading.RLock()
+global_start_time = time.time()
+
+
+def _get_time():
+    return time.time() - global_start_time
+
+
+def sync_print(msg):
+    with print_mut:
+        print(msg)
+
+
+def cdc_throughput_main(thread_index, serial_port):
+    global should_exit
+    ser = None
+    try:
+        count = 0
+        while not should_exit:
+            ser = serial.Serial(serial_port)  # open serial port
+            ser.baudrate = 115200
+            ser.write("this is test data")
+            ser.baudrate = 9600
+            ser.write("more test data")
+            ser.close()
+
+            if count % 10 == 0:
+                sync_print("Thread %i on loop %10i at %.6f - %s - port %s" %
+                           (thread_index, count, _get_time(),
+                            time.strftime("%H:%M:%S"), serial_port))
+            count += 1
+
+    except:
+        sync_print("Error on thread %i serial port %s" %
+                   (thread_index, serial_port))
+        if ser is not None:
+            ser.close()
+        with exit_cond:
+            should_exit = 1
+            exit_cond.notify_all()
+        raise
+
+
+def main():
+    global should_exit
+    lstools = mbed_lstools.create()
+    mbed_list = lstools.list_mbeds()
+    for thread_index, mbed in enumerate(mbed_list):
+        cdc_thread = threading.Thread(target=cdc_throughput_main,
+                                      args=(thread_index, mbed['serial_port']))
+        cdc_thread.start()
+
+    try:
+        with exit_cond:
+            while not should_exit:
+                exit_cond.wait(1)
+    except KeyboardInterrupt:
+        pass
+    should_exit = True
+
+    sync_print("Exiting")
+
+
+if __name__ == "__main__":
+    main()