Hi
I am trying to connect a Prolific pl2303 to my raspberry pi 4 running
raspberry pi os 64 bit. When I look at dmesg I get the following
output:
[ 31.714397] cam-dummy-reg: disabling
[ 44.046197] usb 1-1.1: USB disconnect, device number 3
[ 47.254348] usb 1-1.1: new full-speed USB device number 4 using xhci_hcd
[ 47.361386] usb 1-1.1: New USB device found, idVendor=067b,
idProduct=23a3, bcdDevice= 6.05
[ 47.361402] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 47.361407] usb 1-1.1: Product: USB-Serial Controller
[ 47.361412] usb 1-1.1: Manufacturer: Prolific Technology Inc.
[ 47.361417] usb 1-1.1: SerialNumber: ALBAb115819
[ 47.364081] pl2303 1-1.1:1.0: pl2303 converter detected
[ 47.364106] pl2303 1-1.1:1.0: unknown device type, please report to
linux-usb@xxxxxxxxxxxxxxx
so I followed the example and emailed this address!
and with lsusb:
lsusb -v
Bus 001 Device 004: ID 067b:23a3 Prolific Technology, Inc. USB-Serial Controller
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x067b Prolific Technology, Inc.
idProduct 0x23a3
bcdDevice 6.05
iManufacturer 1 Prolific Technology Inc.
iProduct 2 USB-Serial Controller
iSerial 3 ALBAb115819
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0027
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x000a 1x 10 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Any help much appreciated. Thanks
Giles Roadnight
http://giles.roadnight.name
