psychopy.hardware- hardware interfaces¶
PsychoPy® can access a wide range of external hardware. For some devices the interface has already been created in the following sub-packages of PsychoPy®. For others you may need to write the code to access the serial port etc. manually.
pump- A simple interface to the Cetoni neMESYS syringe pump system
Try to find a connected photometer/photospectrometer!
PsychoPy will sweep a series of serial ports trying to open them. If a port successfully opens then it will try to issue a command to the device. If it responds with one of the expected values then it is assumed to be the appropriate device.
ports (list) – A list of ports to search. Each port can be a string (e.g. ‘COM1’, ‘/dev/tty.Keyspan1.1’) or a number (for win32 comports only). If None is provided then PsychoPy will sweep COM0-10 on Win32 and search known likely port names on MacOS and Linux.
device (str) – String giving expected device (e.g. ‘PR650’, ‘PR655’, ‘CS100A’, ‘LS100’, ‘LS110’, ‘S470’). If this is not given then an attempt will be made to find a device of any type, but this often fails.
An object representing the first photometer found, None if the ports didn’t yield a valid response. None if there were not even any valid ports (suggesting a driver not being installed.)
object or None
Sweeps ports 0 to 10 searching for a PR655:
photom = findPhotometer(device='PR655') print(photom.getLum()) if hasattr(photom, 'getSpectrum'): # can retrieve spectrum (e.g. a PR650) print(photom.getSpectrum())