As for your relay, I'd recommend you pack bits in to a single byte there. Temp will fit in a byte, as will humidity CO2 and Light number will fit in an int each.
In a small format frame, the best option is typically to have a fixed-length frame, since then there's no need to either tell the receiving device how long the frame or data field is, nor specify that it's terminated.įor the example data you've given, it looks like most of your data is going to fit in either a byte (255) or int (65536). Ultimately the format of the frames you transmit is up to you to define. Is your intent to transmit the current value of all sensors simultaneously in the same packet, and transmit all values any time an update is required to be transmitted about the status of any single sensor, or are you intending to only transmit a single sensor value at a time?
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