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sandeepmistry / arduino-LoRa

An Arduino library for sending and receiving data using LoRa radios.
MIT License
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Resetting radio periodically #483

Closed beowulff closed 3 years ago

beowulff commented 3 years ago

I would like to reset the LoRa module periodically (maybe every 15 minutes), to try to prevent lock-ups. Is there any issue with calling LoRa.begin over and over again? Will that cause a memory leak?

IoTThinks commented 3 years ago

May be something is wrong with Arduino SPI? I never have lock-up with esp32.

BTW, I think no memory leak issue to reset LoRa frequently. I used to end and begin LoRa periodically. Later I even turn off the power of the whole LoRa module.

beowulff commented 3 years ago

I'm not sure there is any problem, but this is for a commercial product, and it needs to be reliable. If I can reset the radio on a regular basis, that should guard against some forms of lockup. I'm testing it right now, calling my init_LoaRa function (which calls LoRa.begin) every 1 minute. It's been doing that for a few hours, and seems to be working fine.

If I had a spare port pin, I would control the power to the radio from the ESP32, but I'm fresh out of pins...

IoTThinks commented 3 years ago

Is your board STM32 or Arduino-based? I believe there is no memory leaking issue. However, resetting so many times may have wear-and-tear problem with electronics?

beowulff commented 3 years ago

It's ESP32. I wouldn't think there is any wear issue - I'm not writing to Flash in any of the init routines. I might change the reset scheme to one where the radio is only reset if I don't get a "heartbeat" communication (which happens every 10 minutes). I would reset the entire system, but that might cause issues with devices being controlled by the ESP32.