38 lines
1.0 KiB
Python
Executable File
38 lines
1.0 KiB
Python
Executable File
#!/usr/bin/env python3
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import datetime
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import os
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import struct
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import usb1
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REQUEST_IN = usb1.ENDPOINT_IN | usb1.TYPE_VENDOR | usb1.RECIPIENT_DEVICE
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MIN_DATE = datetime.datetime(year=2021, month=4, day=1)
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def set_time(logger):
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sys_time = datetime.datetime.today()
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if sys_time > MIN_DATE:
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logger.info("System time valid")
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return
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try:
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ctx = usb1.USBContext()
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dev = ctx.openByVendorIDAndProductID(0xbbaa, 0xddcc)
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if dev is None:
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logger.info("No panda found")
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return
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# Set system time from panda RTC time
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dat = dev.controlRead(REQUEST_IN, 0xa0, 0, 0, 8)
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a = struct.unpack("HBBBBBB", dat)
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panda_time = datetime.datetime(a[0], a[1], a[2], a[4], a[5], a[6])
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if panda_time > MIN_DATE:
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logger.info(f"adjusting time from '{sys_time}' to '{panda_time}'")
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os.system(f"TZ=UTC date -s '{panda_time}'")
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except Exception:
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logger.warn("Failed to fetch time from panda")
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if __name__ == "__main__":
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import logging
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logging.basicConfig(level=logging.INFO)
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set_time(logging)
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