HTCC-AB02 Display and Sensor at second I2C


i don’t get the HTCC-AB02 to run with onboard Display and a Sensor (BME-280) at the second I2C (and TTN LoraWan).
I have try some of the heltec sample codes, but there are no sample code for this (or i don’t have found it).
Have someone a running sample?
Is it possible to place a sample ino to the github?