old_contents: import os
  import shutil
  import sys
  import subprocess
  import time
  
  all_device_example = ["cdc_msc_hid", "msc_dual_lun", "hid_generic_inout"]
  all_boards = ["metro_m0_express", "metro_m4_express", "pca10056", "feather_nrf52840_express", "stm32f407g_disc1"]
  
  for example in all_device_example:
      for board in all_boards:
          subprocess.run("make -j2 -C examples/device/{} BOARD={} clean".format(example, board), shell=True)
          subprocess.run("make -j2 -C examples/device/{} BOARD={} all".format(example, board), shell=True)
  
  # FreeRTOS example
  example = 'cdc_msc_hid_freertos'
  board = 'pca10056'
  subprocess.run("make -j2 -C examples/device/{} BOARD={} clean".format(example, board), shell=True)
  subprocess.run("make -j2 -C examples/device/{} BOARD={} all".format(example, board), shell=True)
  
new_contents: import os
  import shutil
  import sys
  import subprocess
  import time
  
  travis = False
  if "TRAVIS" in os.environ and os.environ["TRAVIS"] == "true":
      PARALLEL="-j 2"
      travis = True
  
  success_count = 0
  fail_count = 0
  exit_status = 0
  
  all_device_example = ["cdc_msc_hid", "msc_dual_lun", "hid_generic_inout"]
  all_boards = ["metro_m0_express", "metro_m4_express", "pca10056", "feather_nrf52840_express", "stm32f407g_disc1"]
  
  def build_example(example, board):
      subprocess.run("make -C examples/device/{} BOARD={} clean".format(example, board), shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
      return subprocess.run("make -j 4 -C examples/device/{} BOARD={} all".format(example, board), shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
  
  total_time = time.monotonic()
  
  for example in all_device_example:
      for board in all_boards:
          start_time = time.monotonic()
          build_result = build_example(example, board)
          build_duration = time.monotonic() - start_time
  
          if build_result.returncode != 0:
              exit_status = build_result.returncode
              success = "\033[31mfailed\033[0m"
              fail_count += 1
          else:
              success = "\033[32msucceeded\033[0m"
              success_count += 1
  
          if travis:
              print('travis_fold:start:build-{}-{}\\r'.format(example, board))
          print("Build {} on {} took {:.2f}s and {}".format(example, board, build_duration, success))
          if build_result.returncode != 0:
              print(build_result.stdout.decode("utf-8"))
          if travis:
              print('travis_fold:end:build-{}-{}\\r'.format(example, board))
  
  # FreeRTOS example
  #example = 'cdc_msc_hid_freertos'
  #board = 'pca10056'
  #subprocess.run("make -j2 -C examples/device/{} BOARD={} clean all".format(example, board), shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
  
  
  total_time = time.monotonic() - total_time
  
  print("Total build time took {:.2f}s".format(total_time))
  sys.exit(exit_status)
  
subject: update travis build