Bug: bytewise read mode may return false readings

[Tech-TX]

All of the register reads are bytewise (one byte at a time). From the Bosch datasheet, that's a mistake that could return incorrect readings in 'normal' mode if the register reads happen across sample boundaries. The register shadowing protects you from that error if you do a burst read of all of the sample registers.

4. Data readout

To read out data after a conversion, it is strongly recommended to use a burst read and not address every register individually. This will prevent a possible mix-up of bytes belonging to different measurements and reduce interface traffic. Note that in I²C mode, even when pressure was not measured, reading the unused registers is faster than reading temperature and humidity data separately.

Data readout is done by starting a burst read from 0xF7 to 0xFC (temperature and pressure) or from 0xF7 to 0xFE (temperature, pressure and humidity). The data are read out in an unsigned 20-bit format both for pressure and for temperature and in an unsigned 16-bit format for humidity.