OS/2, eCS & ArcaOS - Technical > Hardware

CH340 serial

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Igor:
Help me, please. Add support for this device to the USBCOM driver.

--- Code: ---Bus 001 Device 004: ID 1a86:7523 QinHeng Electronics CH340 serial converter
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x1a86 QinHeng Electronics
  idProduct          0x7523 CH340 serial converter
  bcdDevice            2.64
  iManufacturer           0
  iProduct                2 USB Serial
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           39
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               98mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      1
      bInterfaceProtocol      2
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval               1
Device Status:     0x0000
  (Bus Powered)

--- End code ---

ivan:
Hi Igor,

What are you using that requires a com port?  I haven't used one for the last 10 years so am interested in your usage.

Igor:

--- Quote from: ivan on December 23, 2024, 08:16:58 pm ---Hi Igor,

What are you using that requires a com port?  I haven't used one for the last 10 years so am interested in your usage.

--- End quote ---
62 / 5 000
I use GSM module. I also plan to use Arduino.

Doug Bissett:

--- Quote ---Help me, please. Add support for this device to the USBCOM driver.
--- End quote ---

Perhaps a silly question, but have you tried USBSER,SYS?

Martin Iturbide:
Hello

Just in case I had a little experience with this device: Prolifc PL2303 USB 2.0 to COM - 067b:2303
https://www.os2world.com/wiki/index.php?title=Prolifc_PL2303_USB_2.0_to_COM

I used USBCOM.SYS.
My testing was very light, I no longer have any serial device to try.

Regards

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