src/adafruit_blinka/agnostic/time.py

   1 from adafruit_blinka import agnostic
   2 if agnostic.implementation == "circuitpython":
   3     from time import *
   4 elif agnostic.implementation == "micropython":
   5     import utime
   6     from utime import sleep
   7
   8     from ucollections import namedtuple
   9     _struct_time = namedtuple("struct_time", ("tm_year", "tm_mon", "tm_mday", "tm_hour", "tm_min", "tm_sec", "tm_wday", "tm_yday", "tm_isdst"))
  10
  11     def marshal_time(tm_year, tm_mon, tm_mday, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=-1, tm_yday=-1, tm_isdst=-1):
  12         _struct_time(tm_year, tm_mon, tm_mday, tm_hour, tm_min, tm_sec, tm_wday, tm_yday, tm_isdst)
  13
  14     def struct_time(t):
  15         return marshal_time(*t)
  16
  17     total_ms = 0
  18     prev_ticks_ms = utime.ticks_ms()
  19     def monotonic():
  20         """
  21         Assumes that monotonic is called more frequently than the wraparound of micropython's utime.ticks_ms()
  22         """
  23         global prev_ticks_ms, total_ms
  24         ticks_ms = utime.ticks_ms()
  25         total_ms += utime.ticks_diff(ticks_ms, prev_ticks_ms)
  26         prev_ticks_ms = ticks_ms
  27         return total_ms * 0.001