47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
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import atexit
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from validitysensor.usb import usb
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from validitysensor.tls import tls
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from validitysensor.sensor import sensor
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from validitysensor.sensor import reboot
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from validitysensor.flash import read_tls_flash
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from validitysensor.init_flash import init_flash
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from validitysensor.upload_fwext import upload_fwext
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from validitysensor.init_db import init_db
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def close():
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if usb.dev is not None:
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# Send the reboot command before closing the device.
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# Without it the sensor seems to keep creating new TLS sessions and eventually runs out of memory.
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# The reboot command may fail if we're shutting down because the device is already gone.
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try:
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reboot()
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except RebootException:
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pass
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finally:
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usb.close()
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def open_common():
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init_flash()
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usb.send_init()
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tls.parseTlsFlash(read_tls_flash())
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tls.open()
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upload_fwext()
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sensor.open()
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init_db()
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# We must register atexit only after we opened usb device,
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# so that our atexit handler is called before pyusb's one and we can still talk to the device
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#
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# Don't attempt to autoreboot unless we finished initializing the sensor successfully.
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# Otherwise if there is a bug in initialization, we may end up in a loop constantly rebooting the device.
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atexit.register(close)
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def open():
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usb.open()
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open_common()
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def open_devpath(busnum, address):
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usb.open_devpath(busnum, address)
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open_common()
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