These utilities are used to download (thermodl) and 
mission (thermoms) a DS1921 Thermochron iButton.

THERMODL:

usage: thermodl 1wire_net_name <output_filename> </Fahrenheit>
  - Thermochron download on the 1-Wire Net port
  - 1wire_net_port required port name
    example: "COM1" (Win32 DS2480),"/dev/cua0"
    (Linux DS2480),"1" (Win32 TMEX)
  - <output_filename> optional output filename
  - </Fahrenheit> optional Fahrenheit mode (default Celsius)
  - version 1.03

THERMOMS:

usage: thermoms 1wire_net_name </Fahrenheit>
  - Thermochron configuration on the 1-Wire Net port
  - 1wire_net_port required port name
    example: "COM1" (Win32 DS2480),"/dev/cua0"
    (Linux DS2480),"1" (Win32 TMEX)
  - </Fahrenheit> optional Fahrenheit mode (default Celsius)
  - version 1.03


The Thermochron has the following features:

   -Temperature range -40°C to 70°C (-40°F to 158°F) 
   -Selectable starting offset (0 minutes to 46 days) 
   -Sample interval (1 to 255 minutes) 
   -Alarms and capture registers triggered when outside specified range 
   -2048 time-stamped temperature readings with optional data wrap 
   -Long-term temperature histogram with 2°C resolution in 56 bins 
   -4096 bits of general-purpose read/write nonvolatile memory