# A protocol file for a E+E EE31 rhT sensor
# Its a binary protocol

Terminator = '';
ReplyTimeout = 3000;
LockTimeout = 5000;
ReadTimeout = 2000;
MaxInput = 15;
# Remove if we can fix the occasional null byte being sent
#ExtraInput = Ignore;

# unsolicited weight message
fetch_rht {
    # First 2 bytes addr, 0 in our case
    # 3rd byte is command, fetch rht values
    # 4th byte length of message, 2 bytes
    # 5th and 6th byte, data. For this case it is 1

    out 0x00 0x00 0x67 0x02 0x00 0x01 0x6a;
    # First 2 bytes is address
    # 0xca8b is the unit at neutra
    # 0x67 command
    # 0x0A length
    # 0x06 ack
    # 0x00, unknown what this is
    # 2 ieee_754 floats.
    # Read exactly one char, but drop it. crc8

    # The device sometimes adds an extra 0x00 at the end...weird
    # I try to handle this with with ?*c command, but it doesn't work
    # Possibly check with Dirk sometime how to make this work, if possible
    # For now ignore extra data
    in "%(\$1:UNIT-NUMBER)2r" 0x67 0x0A 0x06 0x00 "%(A)#R%(B)#R%<sum8>";
}