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Update Dev Notes

Jon Roeber 2024-01-21 19:44:46 +00:00
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Dev-Notes.md

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## 20240121
Got TBeam working with GPS. Downlink from gateway is not working; had to authenticate using ABP.
Need to visualize it in QGIS now. Create a view, grant view permission to previously-created role.
First create a `tbeam` view:
```sql
CREATE OR REPLACE VIEW tbeam AS
WITH data(id, dev_eui, time, alt, lat, lon, rssi) AS
(SELECT
deduplication_id,
dev_eui,
time,
CAST (object -> 'gpsLocation' -> '3' ->> 'altitude' AS FLOAT),
CAST (object -> 'gpsLocation' -> '3' ->> 'latitude' AS FLOAT),
CAST (object -> 'gpsLocation' -> '3' ->> 'longitude' AS FLOAT),
CAST (rx_info -> 0 ->> 'rssi' AS INTEGER)
FROM event_up)
SELECT
id,
dev_eui,
time,
ST_SetSRID(ST_MakePoint(lon, lat, alt), 4326) AS location,
rssi
FROM data
WHERE dev_eui = 'fffe2002c855b594';
GRANT SELECT ON tbeam TO qgis;
```
## 20240117 ## 20240117
Example SQL query to create a `qgis_friendly` view that converts Cayenne GPS location into PostGIS point, includes unique ID, RSSI, time, and gatewayId, and filters on gatewayId: Example SQL query to create a `qgis_friendly` view that converts Cayenne GPS location into PostGIS point, includes unique ID, RSSI, time, and gatewayId, and filters on gatewayId: