I finally got a moment to play with the controller board xanaphyst sent to me. I flashed my firmware to it but it's reading temp and pressure incorrectly. I tried changing the base address of the sensor and reflashing but that gave me the "SENSOR ERROR" warning so I flashed it with the original base address. I see the sensor soldered to the board (at least I think I do), and the firmware is reading from a sensor at that base address.

Is this a different sensor requiring a different library than the bmp280, xanaphyst?