Wu Qianlan

Hi， I am very interested in PEBL, and I would like to use situation awareness tset in PEBL2.1 and record EEG singals simultaneously. I want to add event markers to my data during the data collection, so I used the code you recommanded, but it does not work. dev <- OpenComPort(13,9600) ComPortSendByte(dev,"x") Print(ComPortGetByte(dev)) I also tried parallel port communicatio, and it does not work too. I would appreciate if you can help me with this. Thanks for your time. Wu qianlan