Suddenly  - "Invalid endpoint address 0x1" (affects version 3.0a6, no issues in 2.2)

I have:
- [x] searched open and closed issues for duplicates

### Bug description

I've got a sample python-escpos code that worked fine on my OrangePi microcomputer running Ubuntu. I didn't touch it for couple of months, and now it throws an error `Invalid endpoint address 0x1` - _which is weird since I have different endpoint addresses explicitly set in my code_.

### Steps to reproduce

My OS version:

```bash
# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.4 LTS"
```

Python3:

```bash
# python3 --version
Python 3.6.9
```

python-escpos:

```bash
# pip3 install python-escpos
Requirement already satisfied: python-escpos in /usr/local/lib/python3.6/dist-packages
Requirement already satisfied: future in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: qrcode>=4.0 in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: PyYAML in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: argcomplete in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: argparse in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: pyserial in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: six in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: pyusb>=1.0.0 in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: viivakoodi>=0.8 in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: Pillow>=2.0 in /usr/lib/python3/dist-packages (from python-escpos)
Requirement already satisfied: appdirs in /usr/local/lib/python3.6/dist-packages (from python-escpos)
Requirement already satisfied: importlib-metadata<2,>=0.23; python_version == "3.6" in /usr/local/lib/python3.6/dist-packages (from argcomplete->python-escpos)
Requirement already satisfied: zipp>=0.5 in /usr/local/lib/python3.6/dist-packages (from importlib-metadata<2,>=0.23; python_version == "3.6"->argcomplete->python-escpos)
Requirement already satisfied: more-itertools in /usr/local/lib/python3.6/dist-packages (from zipp>=0.5->importlib-metadata<2,>=0.23; python_version == "3.6"->argcomplete->python-escpos)
```

```bash
# python-escpos version
3.0a6
```

My Citizen CT-S2000 printer is plugged in:

```bash
# lsusb
Bus 006 Device 002: ID 2730:0fff Citizen 
```

I've determined the endpoints:

```bash
# lsusb -v -d 2730:0fff

Bus 006 Device 002: ID 2730:0fff Citizen 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x2730 Citizen
  idProduct          0x0fff 
  bcdDevice            0.02
  iManufacturer           1 CITIZEN 
  iProduct                2 Thermal Printer 
  iSerial                 3 00000000
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        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     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)
```

(as you can see, "in" endpoint is `0x81` and "out" is `0x02`).

I've se up `dialout` group:

```bash
# cat /etc/udev/rules.d/99-escpos.rules
SUBSYSTEM=="usb", ATTRS{idVendor}=="2730", ATTRS{idProduct}=="0fff", MODE="0664", GROUP="dialout"
```

And added current user, `root`, to it:

```bash
 # groups
root dialout i2c
```

My test code is:

```python
import datetime

x = datetime.datetime.today()

from escpos.printer import Usb
p = Usb(0x2730, 0x0fff, 0, 0x81, 0x02) ' Note that endpoints are set correctly

p.text('\nDate: ' + x.strftime("%b %d %Y %H:%M:%S") + '\n')
```

Yet I receive an error:

```bash
# python3 test.py
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/usb/core.py", line 223, in get_interface_and_endpoint
    return self._ep_info[endpoint_address]
KeyError: 1

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "test.py", line 8, in <module>
    p.text('\nDate: ' + x.strftime("%b %d %Y %H:%M:%S") + '\n')
  File "/usr/local/lib/python3.6/dist-packages/escpos/escpos.py", line 514, in text
    self.magic.write(txt)
  File "/usr/local/lib/python3.6/dist-packages/escpos/magicencode.py", line 272, in write
    self.write_with_encoding(encoding, to_write)
  File "/usr/local/lib/python3.6/dist-packages/escpos/magicencode.py", line 293, in write_with_encoding
    six.int2byte(self.encoder.get_sequence(encoding)))
  File "/usr/local/lib/python3.6/dist-packages/escpos/printer.py", line 102, in _raw
    self.device.write(self.out_ep, msg, self.timeout)
  File "/usr/local/lib/python3.6/dist-packages/usb/core.py", line 940, in write
    intf, ep = self._ctx.setup_request(self, endpoint)
  File "/usr/local/lib/python3.6/dist-packages/usb/core.py", line 102, in wrapper
    return f(self, *args, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/usb/core.py", line 215, in setup_request
    intf, ep = self.get_interface_and_endpoint(device, endpoint_address)
  File "/usr/local/lib/python3.6/dist-packages/usb/core.py", line 102, in wrapper
    return f(self, *args, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/usb/core.py", line 231, in get_interface_and_endpoint
    raise ValueError('Invalid endpoint address ' + hex(endpoint_address))
ValueError: Invalid endpoint address 0x1
```

### Device info

 **Printer:** Citizen ST-2000


 **python-escpos version:** 3.0a6

 **python version:** 3.6.9

 **operating system:** Ubuntu 18.04.4 LTS

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Suddenly - "Invalid endpoint address 0x1" (affects version 3.0a6, no issues in 2.2) #384

Bug description

Steps to reproduce

Device info

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Suddenly - "Invalid endpoint address 0x1" (affects version 3.0a6, no issues in 2.2) #384

Description

Bug description

Steps to reproduce

Device info

Metadata

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Issue actions