#How TPG26x comms work:

#First send a command (e.g. ask for the pressure) then the device will return ACK.

#Then send ENQ to get the actual values.

#According to the streamdevice manual, once an "out" is sent access to the

#device is exclusively locked until the WHOLE protocol is finished.

#This should mean that we do not need to worry about commands interrupting each other

LockTimeout = 2500;

ReplyTimeout = 2000;

ReadTimeout = 100;

OutTerminator = CR;

InTerminator = CR LF;

# Reset communication 

reset {

    out "RES,1";

    in ACK;

	out ENQ;

    in "%s";

}

# Get pressures (and errors) from both guages

pres {

    out "PRX";

    in ACK;

	out ENQ;

    in "%(\$1\$2)d,%f,%(\$1\$3)d,%(\$1\$4)f";

}

# Get the current units

getUnits {

    out "UNI";

	in ACK;

	out ENQ;

    in "%{0|1|2}";

}

# Set the current units

setUnits {

    #UNI,0 = mbar

    #UNI,1 = Torr

    #UNI,2 = Pa

    out "UNI,%{0|1|2}";

	in ACK;

	out ENQ;

    in "%{0|1|2}";

}