Communication with USB over UART bridge

A

ArthurP2

Bit poster
Hello
I've a device that communicates to my Mac via USB over a UART bridge. In particular, I'm using a CP210x USB to UART Bridge Virtual COM Port (VCP) driver from Silicon Labs. I know that the data is getting to my Mac because a traditional Mac application receives and displays it.

However, the data does not get to a Windows 10 app running in Windows 10 on Parallels. I've followed the directions http://kb.parallels.com/en/122993 to "Devices > External Devices". It shows two devices with similar names "CP2102 USB to UART Bridge Controller" and "CP2102 USB to UART Bridge Controller #2". The second one is always checked. If the first is unchecked and I click it, then Parallels says "'CP2102 USB to UART Bridge Controller #2' is now 'connected to Windows 10'". However, when I attempt to connect the Windows app to a device, it does not find any available devices.

Any ideas on how to solve this?

Thanks
Arthur
 
Hi ArthurP2,
I assume I have a different problem, but also related to Silabs CP210x devices. I would like to use a set (up to 10) of CP210x devices simultaneously which work fine on MacOS natively.
Neither guest OS Win10 nor Linux works under Parallels. The symptom is that connecting the first CP210x works, at least it shows up in the Parallels USB list as connected to guest OS and also in Windows device manager, so installation of Windows driver works, too.
Unfortunately when I connect a second CP210x device the first disappears and as a result no CP210x is connected at all. So no change to connect more than a single CP210x device to guest OS. When using multiple FTDI devices, everything works as expected.
The very same happens when trying with guest OS Linux. This makes me assuming that there is a incompatibility with CP210x and Parallels.
I also tried the help Swati recommended, to no avail.
regards
Stefan P
 
Hi...i am a new user here. I want to know do you still have your serial port monitor open? You can't have their software and DF running at the same time. Only one software tool can access the port at once and whoever is started first claims it. If it appears that nothing else is running, reboot and try again, then try with Hyperterminal.

pcba china
 
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Hi, I'm also having an issue with this and as a business subscription holder I'll also raise a support ticket. I have 2 issues with the USB serial port,
1. If parallels is not running, I have no access to the port at all
2. When parallels is running, i connect the device, parallels asks if to connect it to the mac or guest OS, I select Mac but the port is not available.
If I install the cp201x driver, I can connect to my device, but only once, then it stops working again.
I'm on a macbook pro 2018 with Mojave.
 
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