.gitlab-ci/bare-metal/serial-buffer.py

   1 #!/usr/bin/python3
   2
   3 # Copyright © 2020 Google LLC
   4 #
   5 # Permission is hereby granted, free of charge, to any person obtaining a
   6 # copy of this software and associated documentation files (the "Software"),
   7 # to deal in the Software without restriction, including without limitation
   8 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9 # and/or sell copies of the Software, and to permit persons to whom the
  10 # Software is furnished to do so, subject to the following conditions:
  11 #
  12 # The above copyright notice and this permission notice (including the next
  13 # paragraph) shall be included in all copies or substantial portions of the
  14 # Software.
  15 #
  16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19 # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22 # IN THE SOFTWARE.
  23
  24 # Tiny script to read bytes from serial, and write the output to stdout, with a
  25 # buffer in between so we don't lose serial output from its buffer.
  26 #
  27 # We don't use 'cu' because it requires stdin to be hooked up and I never
  28 # managed to make that work without getting blocked somewhere.  We don't use
  29 # 'conserver' because it's non-free.
  30
  31 import sys
  32 import serial
  33 import select
  34 import os
  35 import posix
  36
  37 dev=sys.argv[1]
  38
  39 ser = serial.Serial(dev, 115200, timeout=10)
  40
  41 while True:
  42     bytes = ser.read()
  43     sys.stdout.buffer.write(bytes)
  44     sys.stdout.flush()
  45
  46 ser.close()