START L L START C A CI DATA CHECKSUM STOP -- the length is sent twice and the start byte repeats after it, both as on-wire redundancy checks; a STOP byte closes the frame after the checksum too.
Physical UART Transport (300 bps, 8N1.0)
Unsolicited telemetry message LongFrame (ID: LongFrame)
Unsolicited telemetry message from device: LongFrame
Available only on servers:
Accepts the following message:
Device-initiated telemetry payload for LongFrame
{
"cField": 0,
"aField": 0,
"ciField": 0,
"data": "string"
}
Device-initiated telemetry payload for LongFrame