===== Pasquale - Downing Place Sensor Network =====
Pasquale is a temperature, humidity and voltage sensor board with an RS485 network interface. The CPU sensor board is a slave on a Master/Slave RS485 network. The slave devices perform environmental monitoring. The monitored data is reported upon request by the Network Master. \\

Each client has a unique 8 bit address. The addresses are assigned by command from the Master. When a device is first installed on a Network, the address is set to 0xFE. The Master then addresses device oxFE with a write address command that includes the assigned address for this device. \\


Protocol:

|Framing 0x7F|Destination Addr|Source Addr|Command|Data Length| Data bytes| CRC Hi |CRC Lo|

Commands:

|A| Address command |Data = address byte|
|D| Data Request| Data n/a|
|S| Status Response| Data = stored data|