Explicitly turn off LTE modem before deep sleep

hiveeyes · Jun 21, 2019 · 92d86fe · 92d86fe
1 parent 578c4e9
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diff --git a/CHANGES.rst b/CHANGES.rst
@@ -19,6 +19,7 @@ Development
 - Improve IRQ handling when reading the HX711
 - Sleep for 80 microseconds after pulling HX711 clock pin to high
 - Improve bus- and sensor power-management. Add "power_on" signal.
+- Explicitly turn off LTE modem before deep sleep
 
 
 2019-06-17 0.4.0

diff --git a/terkin/radio.py b/terkin/radio.py
@@ -48,6 +48,12 @@ def power_off(self):
 
         # We don't use LTE yet.
         try:
+            log.info('Turning off LTE modem')
+            # https://forum.pycom.io/topic/1022/root-causes-of-high-deep-sleep-current-lopy1-wipy2-and-sipy-all-the-new-modules-do-not-have-deepsleep-issues/121
+            from network import LTE
+            lte = LTE()
+            lte.deinit()
+
             log.info('Turning off LTE modem on boot')
             import pycom
             pycom.lte_modem_en_on_boot(False)