Fixed the printing, added init and small API

src/main.py

@@ -7,7 +7,7 @@
 # Then we build the web interface, using the simple Jinja2 templating.
 
 # Following are the librairies we import,
-from flask import Flask         # Used for the web framework
+from flask import Flask, request         # Used for the web framework
 from printer import Printer     # The wrapper for the printer class
 import toml                     # Used for the config file parsing
 import pprint
@@ -38,11 +38,10 @@ app.secret_key = configuration_file["secrets"]["flask_secret_key"]
 vendor_id = configuration_file["printer"]["vendor_id"]
 device_id = configuration_file["printer"]["device_id"]
 
-printer = Printer(app)
+printer = Printer(app,0x04b8, 0x0e28)
+printer.init_printer()
+
 
-if not printer.init_printer(vendor_id, device_id):
-    app.logger.error('Could not init printer, aborting.')
-    exit(-1)
 
 # API routes
 # The api has the following methods
@@ -51,14 +50,21 @@ if not printer.init_printer(vendor_id, device_id):
 # api/status/{paper,ping,stats}
 
 # If you just call the api route, you get a help back.
+@app.route('/')
+def index():
+    return "Welcome ! Please type your message in the URL bar in such way : /api/print/sms?txt=<message here>"
+
+
 @app.route('/api')
 def api_help():
     return "Welcome to the API's help page"
 
 @app.route('/api/print')
-def index():
-    return "Printing..."
+def api_index():
+    return "Welcome to the printing software's API. Please see the index page to get started."
 
-@app.route('/api/print/sms')
+@app.route('/api/print/sms', methods=['GET'])
 def api_print_sms():
-    return "Printing short message."
+    texte = request.args.get("txt",type=str)
+    app.logger.debug("Printing : " + texte)
+    return  printer.print_sms(texte)