move bluemaestro into my pkg

my/bluemaestro/check.py

@@ -0,0 +1,29 @@
+#!/usr/bin/python3
+import logging
+from datetime import timedelta, datetime
+from kython import setup_logzero
+
+from my.bluemaestro import get_temperature, logger
+
+def main():
+    temps = get_temperature()
+    latest = temps[:-2]
+
+    prev, _ = latest[-2]
+    last, _ = latest[-1]
+
+    POINTS_STORED = 6000
+    FREQ_SEC = 60
+    SECS_STORED = POINTS_STORED * FREQ_SEC
+    HOURS_STORED = POINTS_STORED / (60 * 60 / FREQ_SEC) # around 4 days
+    NOW = datetime.now()
+    assert NOW - last < timedelta(hours=HOURS_STORED / 2), f'old backup! {last}'
+
+
+    assert last - prev  < timedelta(minutes=3), f'bad interval! {last - prev}'
+    single = (last - prev).seconds
+
+
+
+if __name__ == '__main__':
+    main()