Re: Raspberry Pi 3B USB Printing Issue

On Fri, Apr 1, 2022 at 12:01 AM Hans Petter Selasky <hps@selasky.org> wrote:

> On 3/31/22 15:52, Archimedes Gaviola wrote:
> > Are you pertaining to this code Hans, the one you've shared to me
> > previously?
> >
> > +       /* Epson printer */
> > +       {USB_VPI(USB_VENDOR_EPSON, USB_PRODUCT_EPSON_TMU220B, 0)},
>
> Yes, but you can also add the IFACE_XXX ones with "," simply.
>

Hi Hans,

Here's what I have come-up with based on my understanding from your
suggestion. I took a look as well from other USB devices' sources. This
compiles without any problems, still able to detect my printers and
printing still works well. Let me know if this is correct or needs further
changes.

freebsd@generic:~ % diff -Nur /usr/src/sys/dev/usb/serial/ulpt.c.orig
/usr/src/sys/dev/usb/serial/ulpt.c
--- /usr/src/sys/dev/usb/serial/ulpt.c.orig     2022-03-21
19:44:29.178010000 +0800
+++ /usr/src/sys/dev/usb/serial/ulpt.c  2022-04-02 14:27:54.073592000 +0800
@@ -499,6 +499,13 @@
        {USB_IFACE_CLASS(UICLASS_PRINTER),
         USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER),
         USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)},
+
+       /* Epson printer */
+       {USB_VENDOR(USB_VENDOR_EPSON),
+        USB_PRODUCT(USB_PRODUCT_EPSON_TMU220B),
+        USB_IFACE_CLASS(UICLASS_VENDOR),
+        USB_IFACE_SUBCLASS(UISUBCLASS_VENDOR),
+        USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)},
 };

 static int
@@ -555,9 +562,11 @@
                                break;
                        } else {
                                alt_index++;
-                               if ((id->bInterfaceClass ==
UICLASS_PRINTER) &&
-                                   (id->bInterfaceSubClass ==
UISUBCLASS_PRINTER) &&
-                                   (id->bInterfaceProtocol ==
UIPROTO_PRINTER_BI)) {
+                               if ((id->bInterfaceClass == UICLASS_PRINTER
||
+                                   id->bInterfaceClass == UICLASS_VENDOR)
&&
+                                   (id->bInterfaceSubClass ==
UISUBCLASS_PRINTER ||
+                                   id->bInterfaceClass ==
UISUBCLASS_VENDOR) &&
+                                   (id->bInterfaceProtocol ==
UIPROTO_PRINTER_BI)) {
                                        goto found;
                                }
                        }

freebsd@generic:~ % diff -Nur /usr/src/sys/dev/usb/usbdevs.orig
/usr/src/sys/dev/usb/usbdevs
--- /usr/src/sys/dev/usb/usbdevs.orig   2022-03-21 19:42:20.999397000 +0800
+++ /usr/src/sys/dev/usb/usbdevs        2022-04-01 01:21:31.361567000 +0800
@@ -1941,6 +1941,7 @@
 product EPSON 2480             0x0121  Perfection 2480 scanner
 product EPSON 3590             0x0122  Perfection 3590 scanner
 product EPSON 4990             0x012a  Perfection 4990 Photo scanner
+product EPSON TMU220B          0x0202  TM-U220B
 product EPSON CRESSI_EDY       0x0521  Cressi Edy diving computer
 product EPSON N2ITION3         0x0522  Zeagle N2iTion3 diving computer
 product EPSON STYLUS_875DC     0x0601  Stylus Photo 875DC Card Reader

freebsd@generic:~ % dmesg
...
ugen1.5: <EPSON EPSON UB-U03II> at usbus1
ugen1.6: <Printer-58 USB Printing Support> at usbus1
ulpt0 on uhub1
ulpt0: <EPSON EPSON UB-U03II, class 0/0, rev 1.10/2.00, addr 5> on usbus1
ulpt0: using bi-directional mode
ulpt1 on uhub1
ulpt1: <Printer-58 USB Printing Support, class 0/0, rev 2.00/2.54, addr 6>
on usbus1
ulpt1: using bi-directional mode
ulpt1: offline

Thanks,
Archimedes