Lmic plus rfm95w staying awake for long periods

tomtor · July 24, 2017, 8:29pm

When the mcu sleeps you will have to adjust timer0_overflow_count for original AVR microcontrollers, see the end of:

tomtor/RFM-node/blob/master/RFM-basic.ino

/*******************************************************************************
 * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
 *
 * Permission is hereby granted, free of charge, to anyone
 * obtaining a copy of this document and accompanying files,
 * to do whatever they want with them without any restriction,
 * including, but not limited to, copying, modification and redistribution.
 * NO WARRANTY OF ANY KIND IS PROVIDED.
 *
 * This example sends a valid LoRaWAN packet with static payload, 
 * using frequency and encryption settings matching those of
 * the (early prototype version of) The Things Network.
 *
 * Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in g1,
 *  0.1% in g2).
 *
 * ToDo:
 * - set NWKSKEY (value from staging.thethingsnetwork.com)
 * - set APPKSKEY (value from staging.thethingsnetwork.com)
 * - set DEVADDR (value from staging.thethingsnetwork.com)

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For other microcontrollers it will be different. Stm32 needs adjustment of systick_uptime_millis, see eg:

gist.github.com

https://gist.github.com/tomtor/408dad505fd078b434bbf2e86bb88a5e

STM32-OTA.ino

/*******************************************************************************
   Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
             (c) 2017 Tom Vijlbrief

   Permission is hereby granted, free of charge, to anyone
   obtaining a copy of this document and accompanying files,
   to do whatever they want with them without any restriction,
   including, but not limited to, copying, modification and redistribution.
   NO WARRANTY OF ANY KIND IS PROVIDED.

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