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@ -41,9 +41,12 @@ Then, setup the project :
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git clone https://git.n07070.xyz/n07070/LittlePrynter
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virtualenv LittlePrynter
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cd LittlePrynter
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source bin/activate
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pip install -r requirements.txt
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```
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> tip : when you're done, you can get out of the virtualenv either by closing your terminal, or by running `deactivate`.
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You should see a folder named `configuration`. Enter it, and duplicate the file named `config.toml.sample`, and rename the copy to `config.toml`. Now, edit this file by following the comments in the file itself.
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You can now start the web server with
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24
src/main.py
24
src/main.py
@ -7,7 +7,7 @@
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# Then we build the web interface, using the simple Jinja2 templating.
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# Following are the librairies we import,
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from flask import Flask # Used for the web framework
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from flask import Flask, request # Used for the web framework
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from printer import Printer # The wrapper for the printer class
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import toml # Used for the config file parsing
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import pprint
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@ -38,11 +38,10 @@ app.secret_key = configuration_file["secrets"]["flask_secret_key"]
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vendor_id = configuration_file["printer"]["vendor_id"]
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device_id = configuration_file["printer"]["device_id"]
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printer = Printer(app)
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printer = Printer(app,0x04b8, 0x0e28)
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printer.init_printer()
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if not printer.init_printer(vendor_id, device_id):
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app.logger.error('Could not init printer, aborting.')
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exit(-1)
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# API routes
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# The api has the following methods
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@ -51,14 +50,21 @@ if not printer.init_printer(vendor_id, device_id):
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# api/status/{paper,ping,stats}
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# If you just call the api route, you get a help back.
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@app.route('/')
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def index():
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return "Welcome ! Please type your message in the URL bar in such way : /api/print/sms?txt=<message here>"
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@app.route('/api')
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def api_help():
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return "Welcome to the API's help page"
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@app.route('/api/print')
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def index():
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return "Printing..."
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def api_index():
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return "Welcome to the printing software's API. Please see the index page to get started."
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@app.route('/api/print/sms')
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@app.route('/api/print/sms', methods=['GET'])
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def api_print_sms():
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return "Printing short message."
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texte = request.args.get("txt",type=str)
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app.logger.debug("Printing : " + texte)
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return printer.print_sms(texte)
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@ -24,32 +24,46 @@ class Printer(object):
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# Is the printer ready to accept a new print ?
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ready = False
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def __init__(self, app):
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def __init__(self, app, device_id, vendor_id):
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super(Printer, self).__init__()
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self.app = app
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self.ready = False
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self.printer = None
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self.device_id = device_id
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self.vendor_id = vendor_id
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self.usb_args = {}
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self.usb_args['idVendor'] = self.device_id
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self.usb_args['idProduct'] = self.vendor_id
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def init_printer(self, device_id,vendor_id):
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try:
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p = Usb(0x04b8, 0x0e28, 0)
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except USBNotFoundError as e:
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self.app.logger.error("The USB device is not plugged in, aborting..." + str(e))
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return False
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waiting_elapsed = 10
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# p.open()
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def init_printer(self):
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# Is the printer online ? Is the communication with the printer successfull ?
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while not p.is_online():
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waiting_elapsed = 30
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self.app.logger.debug('Waiting for printer to get online...')
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while not self.ready:
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try:
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# This also calls open(), which we need to close()
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# or else the device will appear as busy.
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p = Usb(self.device_id, self.vendor_id, 0, profile="TM-P80")
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except USBNotFoundError as e:
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self.app.logger.error("The USB device is not plugged in, trying again : " + str(e))
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pass
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try:
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if p.is_online():
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self.ready = True
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except Exception as e:
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pass
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sleep(1)
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waiting_elapsed -= 1
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if waiting_elapsed < 1:
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self.app.logger.error('Printer took more than 10 seconds to get online, aborting...')
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self.app.logger.error('Printer took more than 30 seconds to get online, aborting...')
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waiting_elapsed = 30 # Reset the waiting time for the next print.
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return False
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# Let's check paper status.
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ps = p.paper_status()
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if ps == 0:
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@ -58,30 +72,32 @@ class Printer(object):
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elif ps == 1:
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self.app.logger.warning('Printer needs paper to be changed very soon ! ')
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sleep(5)
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elif ps == 0:
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elif ps == 2:
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self.app.logger.debug('Printer has paper, good to go')
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# We're going to print a little text to let know that we're good, as a final check.
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# p.textln("Hello world ! \nStarting up at " + strftime("%Y-%m-%d %H:%M:%S", gmtime()))
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# p.set(align='center', font='a', bold=False, underline=0, width=1, height=1, density=9, invert=False, smooth=False, flip=False, double_width=False, double_height=False, custom_size=False)
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# p.textln("------------------")
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# p.qr("Hello World ! :)",size=1)
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p.image("configuration/hello_world.png",center=True,impl='bitImageColumn')
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# p.cut()
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# Setting up the printing options.
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p.set(align='center', font='a', bold=False, underline=0, width=1, height=1, density=9, invert=False, smooth=False, flip=False, double_width=False, double_height=False, custom_size=False)
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# Beware : if we print this every time the printer becomes ready, it means
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# we are printing before and after every print !
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self.printer = p;
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self.ready = True;
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self.printer.close();
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return True
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def print_sms(self, msg):
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clean_msg = str(msg)
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if len(clean_msg) > 256 or len(clean_msg) < 10 :
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self.app.logger.warning("Could not print message of this length :" + len(clean_msg))
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return False
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self.app.logger.warning("Could not print message of this length :" + str(len(clean_msg)))
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return "Could not print message of this length :" + str(len(clean_msg)) + ", needs to be 10 < x < 256"
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else :
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self.printer.open(self.usb_args);
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self.printer.textln(strftime("%Y-%m-%d %H:%M:%S", gmtime()))
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self.printer.textln(clean_msg)
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self.printer.cut()
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self.printer.close()
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return "Message printed : " + clean_msg
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def print_img(self, path):
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@ -91,8 +107,11 @@ class Printer(object):
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self.app.logger.warning("File does not exist : " + str(path))
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try:
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self.printer.open(self.usb_args)
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self.printer.image(path)
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self.printer.close()
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except Exception as e:
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self.printer.close()
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return e
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else:
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self.app.logging.debug("Printed an image : " + str(path))
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