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Author Topic: VCP driver on macOS 11  (Read 4592 times)

FTDI Community

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Re: VCP driver on macOS 11
« Reply #30 on: December 16, 2020, 12:51:06 PM »

Hello,

Here is the entry for the device with the 0xEEEF product ID:
Code: [Select]
<key>microHAM USB Port</key>
<dict>
<key>CFBundleIdentifier</key>
<string>com.FTDI.driver.FTDIUSBSerialDriver</string>
<key>IOClass</key>
<string>FTDIUSBSerialDriver</string>
<key>IOProviderClass</key>
<string>IOUSBInterface</string>
<key>bConfigurationValue</key>
<integer>1</integer>
<key>bInterfaceNumber</key>
<integer>0</integer>
<key>idProduct</key>
<integer>61167</integer>
<key>idVendor</key>
<integer>1027</integer>
</dict>

And for reference here is a standard FT232R device:
Code: [Select]
<key>FTDI R Chip</key>
<dict>
<key>CFBundleIdentifier</key>
<string>com.FTDI.driver.FTDIUSBSerialDriver</string>
<key>IOClass</key>
<string>FTDIUSBSerialDriver</string>
<key>IOProviderClass</key>
<string>IOUSBInterface</string>
<key>bConfigurationValue</key>
<integer>1</integer>
<key>bInterfaceNumber</key>
<integer>0</integer>
<key>bcdDevice</key>
<integer>1536</integer>
<key>idProduct</key>
<integer>24577</integer>
<key>idVendor</key>
<integer>1027</integer>
</dict>

The Microham device hasn't defined any special settings for latency timer, buffer sizes of buad rate aliasing, which is where my original comment stems from. However the have omitted the bcdDevice field which may cause issues depending on which IC they are using. If they are advising their software wont work when the FTDI defaults are used then I would stick with this advice. But in general as a stop gap solution it is perfectly fine to re-program a device to use FTDI defaults.

Best Regards,
FTDI Community
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on8mc

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Re: VCP driver on macOS 11
« Reply #31 on: December 16, 2020, 04:26:46 PM »

Thanks for the information. I changed the PID of the microHAM USB Interface III to 0x6001 (24577) and it works now with the standard macOS Big Sur .dext
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kalle

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Re: VCP driver on macOS 11
« Reply #32 on: December 23, 2020, 10:02:39 AM »

Related to this, it seems that there's some problem with the kext driver version 2.4.4 notarization, so the installer refuses to start even on macOS 10.15.
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Kimball

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Re: VCP driver on macOS 11
« Reply #33 on: January 11, 2021, 09:19:00 PM »

Any update on VCP drivers for Big Sur? I'm hearing daily from upset customers that their device does not work.. and Big Sur has been out for months now.... :(
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FTDI Community

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Re: VCP driver on macOS 11
« Reply #34 on: January 12, 2021, 02:06:10 PM »

Hello,

Unfortunately there hasn't been any updates from our driver team as of yet, but I will be sure to post any updates when I receive them.

Best Regards,
FTDI Community
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