NB I do not yet own a Sodaq ONE, and my kickstarter TTN gateway and Arduino nodes has not yet arrived, so my question is largely theoretical. I’ve been using Zigbee, Wifi, BT for some while however and I understand the limitations of LoRa node/gateway transmissions traffic.
I cannot see a similar question on this forum.
I want to attach a GPS to a piece of mobile equipment which may sometimes go out of range of my private LoRa network. Lets say I want to take a GPS reading every hour. Imagine that one day between midday and 3pm the gateway was not visible to the SodaqOne node attached to this equipment, at 4 pm the network was found, so the missing data can be resent.
My questions to you are these …
A. Where on the Sodaq ONE could I store GPS data and timestamp for those 3 message events? I see there is EEPROM, SRAM and FLASH
B. Which of these would be natural data storage and does it depend on how big my Arduino program is?
C. Has anyone come across a similar Arduino pattern like this before ?
In pseudocode this would be something like :
wakeup if GPS == true message = GPS reading + timestamp if gateway available send message if response true && message queue empty - quit else store message if there are stored messages in queue foreach stored messages in queue send message if gateway response not received store message in queue sleep for another hour
I’d really like to achieve this without having to add SD card support because this would be another drag on battery and also become another failure point. I believe everything is do-able, but just wondered how simple it would be with a LoRaONE. I could accept that if battery ran out, the stored data would be lost.
This requirement seems not to have been addressed by other LoRa/GPS suppliers, and I wondered if I was alone in having it.