I have a master microcontroller that can control 4 slave microcontrollers. Each slave microcontroller is connected to 3 sensors.
The master microcontroller asks to retrieve the value of a specific sensor on a specific slave, and the slave sends the value to the master. And so on…
Can I use the full duplex protocol ? Like this (where RO = RX and DI = TX) :
Is it better to use half-duplex ? When is it necessary to use half-duplex ? It implies enabling receive and driver at a specific timing which can be annoying compared to the full duplex method.
I have never used an RS-485 before so I am a beginner 🙂