BMP280 temperature compensation problems

[mliszewski]

We can't find constant dependence of pressure in temperature function. Every BMP280 behaves differently. We are using this sensor for altitude measurement. We are using reference sensor and it works quite well when both sensors are calibrated and stays in the same temperature range, but it's unpredictible when temperature changes. We tested 5-6 different BMP280s and can't find dependence between pressure and temperature. We are using compensation functions from datasheet.

[Merlotmaker]

Please assit if possible,

I am using an Arduino UNO as well as a ESP8266 card with a BMP280 installed

I am using the following sketch to try to get familiar with this operation

SparkFun_BME280/I2C_ReadAllData.ino at master · mhaack/SparkFun_BME280 (github.com)

On the serial port I am getting a "0" reading for Temp C and "0" Pa which possibly accounts for an extremely high Altitude reading.

From my untrained eye, this looks like a claibration issue but I am probably wrong. Possibly a coding issue.

I cannot see what the issue is.