File content as of revision 0:01f31e923fe2:

#
# 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 pyocd

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 hid_main(thread_index, board_id):
    global should_exit
    count = 0
    try:
        device = pyocd.probe.pydapaccess.DAPAccess.get_device(board_id)
        while not should_exit:
            device.open()
            info = device.vendor(0)
            info = str(bytearray(info[1:1 + info[0]]))
            assert info == board_id
            device.close()
            if count % 100 == 0:
                sync_print("Thread %i on loop %10i at %.6f - %s - board %s" %
                           (thread_index, count, _get_time(),
                            time.strftime("%H:%M:%S"), board_id))
            count += 1

    except:
        sync_print("Thread %i exception board %s" % (thread_index, board_id))
        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):
        msd_thread = threading.Thread(target=hid_main,
                                      args=(thread_index, mbed['target_id']))
        msd_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()