Thanks DeKay and af4ex
... This is a wonderful
! Everything worked without any trouble and right now I have Cumulus running. Since the terminal program running, I am planning to write a simple c code to communicate with console on COM5, download/update data every 2 second and write it to a file for linux.
Question: Am I wasting time "reinventing the wheel" by writing this code
!
Right now the working system is:
Davis INSTRUMENTS 6250 Vantage Vue Wireless Weather Station
Sparkfun Breakout Board for FT232RL USB to Serial x1 configured for 3.3V
DeKay's gnd-gnd, Tx-Rx and Rx-Tx hardware connection
Realterm Terminal on Windows 7 for testing
Cumulus from Sandysoft for recording data!