Greetings,
        I am trying to use the Dallas Semiconductor DS1821 as
a digital thermometer.  I am able to generate the Reset Pulse
and get the Presence Pulse back; I read the Status Register,
ensuring that the unit is not in 1SHOT mode or in Thermostat
mode.  If either of these 2 bits are in the wrong state, I
do a Write Status to get them into the right state, and wait
for NVB to indicate not busy.  Then I send the Start Convert T
command, but I never get a DONE signal, and everytime I Read
Temperature, I get a result of 0 degrees.  Any ideas what I
am doing wrong?

Thanks in advance for the help.

Dave Reinagel
Auspex Systems, Inc.
dave.reinagel@corp.auspex.com