idProduct and idVendor in Windows OS  #69

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1. pietrygamat commented on Jul 31, 2020

   

   pietrygamat

   on Jul 31, 2020

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   This fork has just been published to maven central minutes ago under

   <dependency>
       <groupId>io.github.java-native</groupId>
       <artifactId>jssc</artifactId>
       <version>2.9.2</version>
   </dependency>
   

   As to requested feature, I'd love to see it too.
2. tresf commented on Jul 31, 2020

   

   tresf

   on Jul 31, 2020

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   idProduct and idVendor

   Last I checked, serial was anonymous. For example, on windows, a COM port would simply be a physical port, or if emulated, an emulated port. What is this in regards to? Can you link an example, perhaps in another language?
3. pietrygamat commented on Jul 31, 2020

   

   pietrygamat

   on Jul 31, 2020

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   I'd hate to take over the thread, but I guess my problem is very similar to @Ivra23 's. Windows does expose a bunch of information about the devices listed as COM ports - among others its HardwareID with VID and PID. Having these information provided with the port name would help a lot in autodetecting correct COM port and take the burden of finding one off of user.

   

   Similarly, on Linux the ports listed by jssc are only those under /dev/tty*, but searching under /dev/serial/by-id gives a lot more information about the device connected:

   $ ls -al /dev/serial/by-id/
   total 0
   drwxr-xr-x 2 root root 100 Aug  1 00:16 .
   drwxr-xr-x 4 root root  80 Jul 31 23:32 ..
   lrwxrwxrwx 1 root root  13 Aug  1 00:12 usb-FTDI_USB__-__Serial-if00-port0 -> ../../ttyUSB1
   lrwxrwxrwx 1 root root  13 Jul 31 23:32 usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0 -> ../../ttyUSB0
   lrwxrwxrwx 1 root root  13 Aug  1 00:16 usb-STMicroelectronics_STM32_Virtual_COM_Port_6D7218725156-if00 -> ../../ttyACM0
   

   Since the developer may expect to talk only to certain types of devices in their app, they'd want to have more information about each available port.

   Since the VID and PID are mentioned, the requirement may very well only apply to USB-to-Serial converters, and the most popular java libs for USB device management are awfully unhelpfull in any attempts to match serial port name with USB device. Approaching from the serial side may be a better idea.
4. tresf commented on Jul 31, 2020

   

   tresf

   on Jul 31, 2020

   Last edited by tresf

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   I believe you're taking about the USB protocol of it all, no? What would be the vendor of an on-board serial port? What's being requested may be more of a USB API. A code snippet should be provided as a proof of concept. If other OSs expose this information, that would be nice.

   Last I checked most COM ports where embedded FTDI controllers, so having a device example, code to grab it would be a great use-case to start with.

   Edit: I see you've provided some examples. Thanks
5. pietrygamat commented on Aug 1, 2020

   

   pietrygamat

   on Aug 1, 2020

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   This work seems to crack it:
   scream3r#113

   👍React with 👍1Reacted by Tres Finocchiaro
6. pietrygamat

   added

   help wantedExtra attention is neededExtra attention is needed

   on Sep 27, 2021