script to set time from panda RTC (#20532)

* read time

* set time

* comment

* only adjust time when sys time is invalid

Co-authored-by: Comma Device <device@comma.ai>

selfdrive/boardd/set_time.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+import datetime
+import os
+import struct
+import usb1
+
+REQUEST_IN = usb1.ENDPOINT_IN | usb1.TYPE_VENDOR | usb1.RECIPIENT_DEVICE
+MIN_DATE = datetime.datetime(year=2021, month=4, day=1)
+
+if __name__ == "__main__":
+  ctx = usb1.USBContext()
+  dev = ctx.openByVendorIDAndProductID(0xbbaa, 0xddcc)
+  if dev is None:
+    print("No panda found")
+    exit()
+
+  # Set system time from panda RTC time
+  dat = dev.controlRead(REQUEST_IN, 0xa0, 0, 0, 8)
+  a = struct.unpack("HBBBBBB", dat)
+  panda_time = datetime.datetime(a[0], a[1], a[2], a[4], a[5], a[6])
+  sys_time = datetime.datetime.today()
+  if panda_time > MIN_DATE and sys_time < MIN_DATE:
+    print(f"adjusting time from '{sys_time}' to '{panda_time}'")
+    os.system(f"TZ=UTC date -s '{panda_time}'")