[FieldTrip] Trouble writing data from TMSi to FieldTrip buffer (Error message: "Cannot initiate device")

[Jostein Holmgren]

Dear all,

I am having trouble writing data from my TMSi Porti 7 system to the FieldTrip buffer. I have tried both the tmsidriver.exe and tmsi2ft.exe tools, but I’ve focused my efforts on the latter.

I have the TMSi system connected to my PC via USB and have tested the connection by recording some data in Polybench without issue. When I attempt to run tmsi2ft nothing happens until I terminate the process, at which point the error message “Cannot initiate device” is displayed. The exact syntax I run in the cmd is

	tmsi2ft config.txt -

where config.txt file contains the following (misc commented lines excluded)

	[select]
	25=Blip25
	
	samplerate=2048

For testing purposes I’ve only got a bipolar electrode connected to the TMSi system, which is the channel listed in the config file.

For tmsidriver.exe I changed the sampling rate in parameter file to match my system to attempt to get it to work, but no success there either. I also have the buffer open when running tmsidriver.exe. The contents of preferences.txt is

	sampleRate(milliHz)	BufSizeFactor		savedata(0/1)
	2048000				5				1

The TMSi Porti 7 system has a sampling rate of 2048Hz. The PC is running Windows 8.1 64-bit. I’m using fieldtrip-20171106.

Any advice or suggestions is greatly appreciated.

Best regards,
Jostein Holmgren

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Jostein Holmgren
DPhil Student (PRS)
Nuffield Department of Clinical Neurosciences
Wellcome Centre for Integrative Neuroimaging, FMRIB Building
University of Oxford

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