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usb2comport [2009/09/02 06:45] twdorris |
usb2comport [2024/03/15 11:16] |
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- | ====== USB to COM Port Mapping ====== | ||
- | ===== The Problem ===== | ||
- | When connecting our ECMLink cable to the laptop, the FTDI driver used by our cable wants to assign different COM ports to each cable. This is not practical for a laptop used by a shop or general tuner when connecting cables from multiple customer cars. | ||
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- | To correct this, you can tell the FTDI driver to use a fixed COM port for each physical USB port on your laptop. | ||
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- | ===== The Solution ===== | ||
- | To tell the FTDI driver to always assign the same COM port to a physical USB port, you have to edit the following registry key: | ||
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- | ''HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\FTDIBUS\Parameters\LocIds'' | ||
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- | In this key, you will specify the location IDs of each USB port you plan to use. | ||
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- | To obtain the location IDs of your physical USB ports, you can use the [[http://www.ecmtuning.com/images/forums/usbview/usbview.exe|USBView application]]. When you run this application, you will be presented with a screen as shown below. Of course, the laptop on which you are running this application will have a different configuration. | ||
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