CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=esp-extra-scripts 2016-06-06T09:51:12+00:00 2016-06-06T09:51:12+00:00 puuu puuu@users.noreply.github.com 2016-06-03T15:21:26+00:00 urn:sha1:ee12581a3545c6e950b4a2b5322167eb73326928 By design, at wake up from deepsleep, the RTC timer will be reset, but the data stored in RTC memory will not [1]. Therefore, we have to adjust delta in RTC memory before going into deepsleep to get almost correct time after waking up. [1] http://bbs.espressif.com/viewtopic.php?t=1184#p4082 2016-04-21T10:43:37+00:00 Damien George damien.p.george@gmail.com 2016-04-21T10:43:37+00:00 urn:sha1:32d7cf6e441660caed00620309d1faa4b7df5dd4 Use the machine.deepsleep() function to enter the sleep mode. Use the RTC to configure the alarm to wake the device. Basic use is the following: import machine # configure RTC's ALARM0 to wake device from deep sleep rtc = machine.RTC() rtc.irq(trigger=rtc.ALARM0, wake=machine.DEEPSLEEP) # do other things # ... # set ALARM0's alarm to wake after 10 seconds rtc.alarm(rtc.ALARM0, 10000) # enter deep-sleep state (system is reset upon waking) machine.deepsleep() To detect if the system woke from a deep sleep use: if machine.reset_cause() == machine.DEEPSLEEP_RESET: print('woke from deep sleep') 2015-05-12T23:12:54+00:00 Josef Gajdusek atx@atx.name 2015-05-11T19:11:37+00:00 urn:sha1:103d12a877f09e5d812f8c9c1fbf13ddbea4f78c