text: #
  #  Builds custom upload command
  #    1) Run platformio as a subprocess to find a COM port
  #    2) Build the upload command
  #    3) Exit and let upload tool do the work
  #
  #  This script runs between completion of the library/dependencies installation and compilation.
  #
  #  Will continue on if a COM port isn't found so that the compilation can be done.
  #
  
  import os,sys
  from SCons.Script import DefaultEnvironment
  import platform
  current_OS = platform.system()
  
  env = DefaultEnvironment()
  
  build_type = os.environ.get("BUILD_TYPE", 'Not Set')
  if not(build_type == 'upload' or build_type == 'traceback' or build_type == 'Not Set') :
    env.Replace(UPLOAD_PROTOCOL = 'teensy-gui')  # run normal Teensy2 scripts
  else:
  
    if current_OS == 'Windows':
        avrdude_conf_path =  env.get("PIOHOME_DIR") + '\\packages\\toolchain-atmelavr\\etc\\avrdude.conf'
  
        source_path = env.get("PROJECTBUILD_DIR") + '\\' + env.get("PIOENV") + '\\firmware.hex'
  
        upload_string = 'avrdude -p usb1286 -c flip1 -C ' + avrdude_conf_path + ' -U flash:w:' + source_path + ':i'
  
    else:
        source_path = env.get("PROJECTBUILD_DIR") + '/' + env.get("PIOENV") + '/firmware.hex'
  
        upload_string = 'avrdude -p usb1286 -c flip1 -U flash:w:' + source_path + ':i'
  
  
    env.Replace(
         UPLOADCMD = upload_string,
         MAXIMUM_RAM_SIZE = 8192,
         MAXIMUM_SIZE = 130048
    )
  