pi@raspberrypi:~/wasp-os $ ./tools/wasptool --device EF:46:76:DB:A7:CC --upload hrv.py
Traceback (most recent call last):
  File "./tools/wasptool", line 430, in <module>
    handle_upload(console, args.upload, args.upload_as)
  File "./tools/wasptool", line 323, in handle_upload
    with open(fname) as f:
FileNotFoundError: [Errno 2] No such file or directory: 'hrv.py'
pi@raspberrypi:~/wasp-os $ ./tools/wasptool --device EF:46:76:DB:A7:CC --upload ~/wasp-os/wasp/apps/hrv.py
Uploading /home/pi/wasp-os/wasp/apps/hrv.py:
[##################################################] 100%
pi@raspberrypi:~/wasp-os $
pi@raspberrypi:~/wasp-os $ cd wasp
pi@raspberrypi:~/wasp-os/wasp $ nano main.py
Use "fg" to return to nano.

# SPDX-License-Identifier: LGPL-3.0-or-later
# Copyright (C) 2020 Daniel Thompson

import wasp
from gadgetbridge import *
from HRV import HRVApp
wasp.system.register(HRVApp())
wasp.system.schedule()

[1]+  Stopped                 nano main.py
pi@raspberrypi:~/wasp-os/wasp $

pi@raspberrypi:~/wasp-os/wasp $ ^C
pi@raspberrypi:~/wasp-os/wasp $ cd ..
pi@raspberrypi:~/wasp-os $ ./tools/wasptool --device EF:46:76:DB:A7:CC --upload ~/wasp-os/wasp/main.py
Uploading /home/pi/wasp-os/wasp/main.py:
[##################################################] 100%
pi@raspberrypi:~/wasp-os $