ESP32 example with deep sleep and fast re-joining after wake-up

mcci-catena / arduino-lorawan

User-friendly library for using arduino-lmic with The Things Network and other LoRaWAN® networks

MIT License

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ESP32 example with deep sleep and fast re-joining after wake-up #205

Closed matthias-bs closed 1 year ago

matthias-bs commented 1 year ago

Example sketch showing how to periodically poll a sensor and send the data to The Things Network.

Based on simple_sensor_bme280.ino with the following modifications:

reading the sensor data is replaced by a stub
implements power saving by using the ESP32 deep sleep mode
implements fast re-joining after sleep by storing network session data in the ESP32 RTC RAM
LoRa_Serialization library is used for encoding of various data types into bytes

matthias-bs commented 1 year ago

Added fix for compiler warning with Arduino core v2.0.x

Warning:

/home/runner/Arduino/libraries/MCCI_Arduino_LoRaWAN_Library/src/Arduino_LoRaWAN.h:965:87: warning: missing initializer for member 'Arduino_LoRaWAN::SessionStateHeader::Size' [-Wmissing-field-initializers]
         SessionState m_savedSessionState { .Header = { .Tag = kSessionStateTag_Null } };

Fix:

SessionState m_savedSessionState { .Header = { .Tag = kSessionStateTag_Null, .Size = 0 } };

terrillmoore commented 1 year ago

Thanks, sorry for the delay in review.

terrillmoore commented 1 year ago

Pull request adopted and merged to master after rebase. Thanks!

matthias-bs commented 1 year ago

Thanks!