SHDLC Protocol ============== SHDLC (Sensirion High-Level Data Link Control) is a byte-oriented master-slave communication protocol based on `ISO HDLC`_. It is used to control some of Sensirion's devices (for example mass flow controllers). The detailed protocol documentation is not publicly available (yet). If you need it, please contact our `customer support`_. .. _ISO HDLC: https://en.wikipedia.org/wiki/High-Level_Data_Link_Control .. _customer support: https://www.sensirion.com/en/about-us/contact/