uint8_t IO_LPS22HB::status(uint8_t status) never returns a negative

[reefwing]

I don't think the private status function works as you expect. It returns a uint8_t which is never < 0. Thus the tests in readPressure() and readTemperature() are never true, i.e.,

if (status(0x1) < 0)
		return 1.23;

If you assign -1 to a uint8_t I think it interprets this as 255. You need to change the status return type to an int.