The barometer BMP085 is factory calibrated and calibration factors (ac1, ..., ac6, mb, mc, b1, b2...) are stored in its EPROM.
In the driver we do not read them from the device but use hardcoded values.
We should read the calibration data during initialisation to have better altitude estimation.
See datasheet: BST-BMP085-DS000-05.pdf
And our driver
The barometer BMP085 is factory calibrated and calibration factors (ac1, ..., ac6, mb, mc, b1, b2...) are stored in its EPROM. In the driver we do not read them from the device but use hardcoded values. We should read the calibration data during initialisation to have better altitude estimation. See datasheet: BST-BMP085-DS000-05.pdf And our driver