Use without WinUsb driver #32
Comments
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If it helps, I'm currently working around this by instructing to assign a "Virtual port" on the printer - the manufacturer driver of most printers includes this functionality. Then you can use the |
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@danjohnson95 I am also interested in making it work with windows and not installed WinUSB directly. How did you do this? Do I need to install the driver for printer? Can you share more information about it? In Python I was able to ship the driver within the application. I used following code. It would be nice if it also works with Node. import usb.core
import usb.util
import libusb_package
import usb.backend.libusb1
def list_usb_devices():
libusb1_backend = usb.backend.libusb1.get_backend(find_library=libusb_package.find_library)
devices = usb.core.find(find_all=True,backend=libusb1_backend)
device_list = []
for device in devices:
device_info = {
"vendor_id": hex(device.idVendor),
"product_id": hex(device.idProduct),
"manufacturer": usb.util.get_string(device, device.iManufacturer),
"product": usb.util.get_string(device, device.iProduct)
}
device_list.append(device_info)
return device_list
def find_device(vendor_id, product_id):
libusb1_backend = usb.backend.libusb1.get_backend(find_library=libusb_package.find_library)
device = usb.core.find(idVendor=vendor_id, idProduct=product_id, backend=libusb1_backend)
if device is None:
raise ValueError('Printer not found.')
return device
def open_cash_drawer(device):
# Detach kernel driver if necessary
if device.is_kernel_driver_active(0):
device.detach_kernel_driver(0)
# Set the active configuration
device.set_configuration()
# Get the endpoint instance
cfg = device.get_active_configuration()
intf = cfg[(0, 0)]
ep = usb.util.find_descriptor(
intf,
# Match the first OUT endpoint
custom_match = lambda e:
usb.util.endpoint_direction(e.bEndpointAddress) == usb.util.ENDPOINT_OUT
)
assert ep is not None
open_drawer_command = b'\x1B\x70\x00\x19\xFA'
ep.write(open_drawer_command)
def openCashDrawer():
VENDOR_ID = int("0x1fc9", 16)
PRODUCT_ID = int("0x2016", 16)
printer = find_device(VENDOR_ID, PRODUCT_ID)
open_cash_drawer(printer)
# devices = list_usb_devices()
# print(json.dumps(devices, indent=4))
# openCashDrawer()
usb.backend.libusb1.get_backend(find_library=libusb_package.find_library)
from escpos.printer import Usb
p = Usb(0x1fc9, 0x2016)
# p.text("Hello World\n")
# p.barcode('4006381333931', 'EAN13', 64, 2, '', '')
# p.text("\n")
# p.set("left", None, None, 0, 10, 10)
# p.text("hello world\n")
# p.set("right", None, None, 1, 2, 2, 2)
# p.text("hello world\n")
# p.cut()
# p.cashdraw(2)
p.set(double_height=False, double_width=False)
p.textln("Bla")
p.set(font="b")
p.textln("Bla")
# p.qr("was up?", size=6, center=True)
p.set(align="center", double_height=True, double_width=True)
p.cut() |
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@tobiasbenkner I did this with an Epson TM-T88V printer. I installed the standard manufacturer driver, which also comes with the "Epson TM Virtual Port Driver Assignment Tool". I then configured the printer to be available on COM1. Here's some instructions that roughly explain the process: https://support.fidelitysystems.co.uk/portal/en/kb/articles/epson-printers-virtual-port-setup Then, using the import { Printer, Image } from "@node-escpos/core";
import Serial from "@node-escpos/serialport-adapter";
const device = new Serial('COM1');
device.open(async function(err){
let printer = new Printer(device);
// ... |
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Thank you @danjohnson95!! Now I understood. It's a great workaround. Maybe it's also possible without installing the printer driver. I will keep digging. I will have a look to another virtual port mapping tool. The download from the epson site is not available anymore :/ There should also be a general application for it.
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You should be able to download it from here under Drivers: https://epson.com/Support/Point-of-Sale/Thermal-Printers/Epson-TM-T88V-Series/s/SPT_C31CA85011?review-filter=Windows+8+64-bit |
Can we use this package without installing the WinUSB driver or there is a way to silently install the WinUSB driver through code?
I tried using
usb.useUsbDkBackend()from thenode-usbpackage but no luck as mentioned in the readme.md section of https://github.com/node-usb/node-usbPrimarily, I don't want the client to do an extra WinUSB installation.
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