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There seems to be tons of information out there as to how to connect up BACnet and implement Building Managent systems, but almost nothing about how to make a sensor to connect to it.
So, I‘d like to design a device that can supply half a dozen analogue parameters and a few on/off binary levels.
What I know so far is that each is called an “object”, the system controller sends a UDP datagram to the sensor, and the sensor responds by sending the data that was requested as another UDP datagram.
And also, that if a parameter strays outside a set band, the sensor sends that data without being asked.
I’m guessing that one of those USRiot modules can handle the UDP datagrams, and all I have to do is decode the serial data, and send the reply.
Have I hugely underestimated what is involved? Any pointers to useful application notes, microcontroller software examples etc. would be much appreciated.
So, I‘d like to design a device that can supply half a dozen analogue parameters and a few on/off binary levels.
What I know so far is that each is called an “object”, the system controller sends a UDP datagram to the sensor, and the sensor responds by sending the data that was requested as another UDP datagram.
And also, that if a parameter strays outside a set band, the sensor sends that data without being asked.
I’m guessing that one of those USRiot modules can handle the UDP datagrams, and all I have to do is decode the serial data, and send the reply.
Have I hugely underestimated what is involved? Any pointers to useful application notes, microcontroller software examples etc. would be much appreciated.
