Moved to Python3, and moved to the new Adafruit Library
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N07070
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README.md
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README.md
@ -19,7 +19,9 @@ To make this project work, you will need :
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## Installation
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Start by following the guide [here](https://learn.adafruit.com/networked-thermal-printer-using-cups-and-raspberry-pi) to install the CUPS software needed to print images. You can also get some information from [here](https://learn.adafruit.com/mini-thermal-receipt-printer) and [here](https://learn.adafruit.com/instant-camera-using-raspberry-pi-and-thermal-printer) if you're stuck.
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Start by following the guide [here](https://learn.adafruit.com/networked-thermal-printer-using-cups-and-raspberry-pi) to install the CUPS software needed to print images. If you want, you can install it via the command line, [following this guide](https://help.ubuntu.com/lts/serverguide/cups.html).
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You can also get some information from [here](https://learn.adafruit.com/mini-thermal-receipt-printer) and [here](https://learn.adafruit.com/instant-camera-using-raspberry-pi-and-thermal-printer) if you're stuck.
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Then, setup the project :
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```
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@ -43,6 +45,15 @@ If you liked this project, feel free to support my work !
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[https://n07070.xyz/post/about-me/about-me/](Donations welcome :-])
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## Links
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- [A blog post about some CUPS configuration](http://scruss.com/blog/2015/07/12/thermal-printer-driver-for-cups-linux-and-raspberry-pi-zj-58/)
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- [Github repo with CUPS drivers for the Adafruit Thermal Printer ( zj-58 )](https://github.com/klirichek/zj-58)
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- [A link to buy one in Europe](https://rlx.sk/sk/various-boards/1829-mini-thermal-receipt-printer-adafruit-597.html)
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- [Another link to buy one, direct from factory](https://www.cashinotech.com/csn-a2-58mm-mini-panel-thermal-receipt-printer_p11.html)
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-
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## Licence
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```
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@ -3,12 +3,37 @@
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import os, random, sys, json
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from datetime import datetime
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from subprocess import call
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from Adafruit_Thermal import *
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import serial
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from flask import Flask, render_template, jsonify, make_response, request, redirect, url_for, abort, session, flash
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from flask_limiter import Limiter
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from pprint import pprint
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from flask_limiter.util import get_remote_address
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# Update to using the new Python 3 lib
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import board
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import busio
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import adafruit_thermal_printer
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ThermalPrinter = adafruit_thermal_printer.get_printer_class(2.69)
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RX = board.RX
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TX = board.TX
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uart = serial.Serial("/dev/ttyAMA0", baudrate=19200, timeout=3000)
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printer = ThermalPrinter(uart, auto_warm_up=False)
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# Initialize the printer. Note this will take a few seconds for the printer
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# to warm up and be ready to accept commands (hence calling it explicitly vs.
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# automatically in the initializer with the default auto_warm_up=True).
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printer.warm_up()
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if printer.has_paper():
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print('Printer has paper!')
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else:
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print('Printer might be out of paper, or RX is disconnected!')
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app = Flask(__name__)
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@ -77,38 +102,31 @@ def logout():
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flash('Tu est déconnecté', 'info')
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return redirect(url_for('login'))
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@app.route('/print/image')
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@limiter.limit("5 per minute", error_message=error_handler_limiter)
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def print_image():
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if session.get('logged_in'):
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img = random.choice(os.listdir("static/images/")) #change dir name to whatever
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# call(["lp", "-o fit-to-page", "static/images/" + img])
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printer = Adafruit_Thermal(SERIAL_PORT, BAUDRATE, timeout=5)
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printer.begin()
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printer.feed(1)
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printer.printImage("static/images/" + img, True)
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printer.feed(2)
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return redirect(url_for('display_index_page'))
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else:
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return redirect(url_for('login'))
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# @app.route('/print/image')
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# @limiter.limit("5 per minute", error_message=error_handler_limiter)
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# def print_image():
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# if session.get('logged_in'):
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# img = random.choice(os.listdir("static/images/")) #change dir name to whatever
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# # call(["lp", "-o fit-to-page", "static/images/" + img])
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# printer = Adafruit_Thermal(SERIAL_PORT, BAUDRATE, timeout=5)
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# printer.begin()
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# printer.feed(1)
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# printer.printImage("static/images/" + img, True)
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# printer.feed(2)
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# return redirect(url_for('display_index_page'))
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# else:
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# return redirect(url_for('login'))
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@app.route('/print/text', methods=['POST'])
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@limiter.limit("3: per minute", error_message=error_handler_limiter)
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def print_text():
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if session.get('logged_in'):
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if len(request.form['message']) < 200:
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printer = Adafruit_Thermal(SERIAL_PORT, BAUDRATE, timeout=5)
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printer.begin()
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printer.justify('L')
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printer.println((request.form['message']).encode())
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printer.setSize('S')
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printer.println(">> " + datetime.now().strftime("%Y-%m-%d %H:%M:%S") + " " + session.get('user'))
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printer.justify('C')
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printer.println("------------------------------")
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printer.set_defaults()
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printer.print((request.form['message']))
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printer.print("From" + session['user'])
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printer.feed(2)
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printer.sleep() # Tell printer to sleep
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printer.wake() # Call wake() before printing again, even if reset
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printer.setDefault() # Restore printer to defaults
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return redirect(url_for('display_index_page'))
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else:
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flash('Le text est trop long, 200 caractères au maximum stp !')
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