class TerkinApplication:
"""Start the data logger application."""
def __init__(self, config=None, daemon=False):
self.config = config
self.daemon = daemon
self.bootloader = None
self.datalogger = None
def start(self):
# Make environment compatible with CPython.
patch_system()
log.info('Starting bootloader')
self.bootloader = start_bootloader()
log.info('Loading modules')
from terkin.datalogger import TerkinDatalogger
settings = load_settings(settings_file=self.config)
log.info('Setting up Terkin')
self.datalogger = TerkinDatalogger(
settings, platform_info=self.bootloader.platform_info)
self.datalogger.setup()
log.info('Starting Terkin')
try:
if self.daemon:
self.datalogger.start()
else:
self.datalogger.duty_cycle()
except KeyboardInterrupt:
self.shutdown()
def shutdown(self):
log.info('Shutting down Terkin')
if self.datalogger.device.status.networking:
self.datalogger.device.networking.stop()
def start_ui(self):
# Make environment compatible with CPython.
patch_system()
from terkin.ui import TerkinUi
ui = TerkinUi()
try:
ui.start()
ui.example_listbox()
#ui.example_menu()
finally:
ui.stop()
def invoke_datalogger(caplog, settings, pycom=False, raspberrypi=False):
# Use a fake filesystem.
with FakeFS():
# Pycom mounts the main filesystem at "/flash".
if pycom:
os.mkdir('/flash')
if raspberrypi:
os.makedirs('/sys/firmware/devicetree/base')
with open('/sys/firmware/devicetree/base/model', 'w') as f:
f.write('Raspberry')
os.makedirs('/sys/bus/w1/devices/w1_bus_master1')
with open('/sys/bus/w1/devices/w1_bus_master1/w1_master_slaves',
'w') as f:
f.writelines(['28-ff641d8fdf18c1\n', '28-ff641d8fc3944f\n'])
os.makedirs('/sys/bus/w1/devices/w1_bus_master1/28-ff641d8fdf18c1')
with open(
'/sys/bus/w1/devices/w1_bus_master1/28-ff641d8fdf18c1/w1_slave',
'w') as f:
f.write('YES\nt=48187')
os.makedirs('/sys/bus/w1/devices/w1_bus_master1/28-ff641d8fc3944f')
with open(
'/sys/bus/w1/devices/w1_bus_master1/28-ff641d8fc3944f/w1_slave',
'w') as f:
f.write('YES\nt=48187')
os.makedirs('/dev')
with open('/dev/i2c-3', 'w') as f:
f.write('nonsense')
# Capture log output.
with caplog.at_level(logging.DEBUG):
# Invoke bootloader.
bootloader = invoke_umal()
# Invoke datalogger with a single duty cycle.
from terkin.datalogger import TerkinDatalogger
datalogger = TerkinDatalogger(
settings, platform_info=bootloader.platform_info)
datalogger.setup()
datalogger.duty_cycle()
return datalogger