====== HUW code ======
===== Modules =====
==== Init ====
  - init variables
  - init classes
  - calls all inits direct available
  - init or open db
==== read parameter ====
  - need file and db
  - check availability of parameter file
  - read file into classes
  - log all read values into db
==== notification ====
  - send email
  - log into db
  - if error in send or db write, try to log to file
==== logging ====
  - write to db
  - in case of error use Notification
==== check ====
==== measure ====


===== Environments =====
==== Code lib ====
==== Dev ====
==== Prod ====

===== principles =====
==== Error management ====
  - check # of parameter of calls
  - check length, range, values of calls
  - use <code> try ... except </code>
  - use one global Exit procedure
==== module test ====
==== literals ====
==== naming ====
  * LITERALS in capital letter
  * variables in small letter, if one word only
  * combinedVariables first word small, all later starting with a Capital letter
  * Procedures  strting with a capital letter
==== used abbreviations====
  - corr: correction
  - idx: index
  - hum: humidity
  - no: number
  - temp: temperature
  - txt: text

==== Variables ====
=== Principles ===
  - avoid "global" variables

=== Used Variables ===


  - cnt: counter
  - data: bin data
  - db: database handle
  - e: error
  - f: file handle
  - i: counter
  - l: line
  - r: range
  - row: db row
  - s: sensor
  - t: text string
  - ta: time ASCII
  - ti: time integer

==== OS ====
  - only linux
==== Python ====
  - 2.7