Re: [Openeeg-list] Serial Cable

[Chris V. <ch...@mi...>]

Hi,
> Hi!  I'm a little confused how to hook up the serial cable.  Do i jsut 
> need to connect RxD, TxD, and GND1?  If so, do I only use 3 of the 9 
> serial ports?
if you want to use the standard firmware protocols P2 or P3 (which are 
unidirectional)
it is even sufficient to connect only 2 wires:

   TxD  (ModularEEG-side)  -  RxD (PC-side)
  GND (ModularEEG-side) -  GND (PC-side)

This is all you need to send data _from the EEG-device to the PC_ .

The RxD - TxD - connection is needed when you want to send data _from 
the PC to the ModularEEG_, for example to change
the baud- or sampling rates. This is supported by bidirectional firmware 
protocols P21 (by Jarek and Reiner),
the bidirectional firmware by Moritz can be used for stimulus processing.

regards,
Chris.