Hello All,
I hope this is the right place for a pyusb user question. If not, I
apologize (and if you could direct me to an appropriate forum I'd be
obliged).
I am trying to control a thorlabs computer-controlled rotation stage.
The device contains an FT232BM peripheral chip, and can be controlled
with the pyserial package. However, to figure out which device to
open with pyserial, I check dmesg and see that it's been mounted on
/dev/ttyUSB0. Then I open pyserial and am about my business.
I'd like to be able to search for all motion controllers connected to
my computer. I *can* do that with pyusb. The following code finds
all the devices, and by manufacturer and serial number I can find out
exactly which device is which:
for bus in usb.busses():
for dev in bus.devices:
print "Bus %s Device %s: ID %04x:%04x" %
(bus.dirname,dev.filename,dev.idVendor,dev.idProduct)
h = dev.open()
print "Manufacturer: %s" % (h.getString(dev.iManufacturer,30))
print "Product: %s" % (h.getString(dev.iProduct,30))
print "SerialNumber: %s" % (h.getString(dev.iSerialNumber,30))
My question is: once I know the usb bus and device numbers, is there
a way to learn that that bus/device combination maps to /dev/ttyUSB0?
Thanks,
Joe
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