Change Error to warning when not on a Raspberry

because this is a real-time command, we might not get the good answer
and fail to print fast enough. See https://download4.epson.biz/sec_pubs/pos/reference_en/escpos/realtime_commands.html

src/main.py

@@ -123,6 +123,8 @@ limiter = Limiter(
 )
 
 
+app.logger.info("🖶 Welcome to LittlePrynter !")
+
 # General routes
 @app.route("/")
 @limiter.limit("1/second", override_defaults=False)

src/printer.py

@@ -322,22 +322,29 @@ class EscPosPrinter(Printer):
         self.app.logger.info("Did a cut")
         self.ready = True
 
-    def _state(self):
-        self.app.logger.debug("Online : %s " , self.printer.is_online())
-        self.app.logger.debug("Has paper : %s " , self._has_paper())
-        self.app.logger.debug("Ready : %s " , self.ready)
-        return self.printer.is_online() and self.ready and self._has_paper()
+    def _state(self) -> bool:
+        has_paper = self._has_paper()
+        is_ready = self.ready
+
+        self.app.logger.debug("Has paper : %s " , has_paper )
+        self.app.logger.debug("Ready : %s " , is_ready )
+
+        return is_ready and has_paper # and is_online
 
     def print_task(self, task_type, data):
         """Execute actual print based on task type"""
+
+
         with self._lock:
             self.app.logger.debug("Acquired lock to start print")
 
-            while not self._state():
-                self.app.logger.debug("Waiting for the printer to become ready..")
+            i_m_ready = self._state()
+            while not i_m_ready:
+                self.app.logger.debug("Waiting for the printer to become ready, current state %s ", str(i_m_ready))
+                i_m_ready = self._state()
                 time.sleep(0.3)
 
-            self.app.logger.debug("Checked state to start printing %s", self._state())
+            self.app.logger.debug("Checked state to start printing : %s", self._state())
             self.ready = False
             try:
                 self.app.logger.debug("Checking task type")

src/raspberry.py

@@ -68,7 +68,7 @@ class Raspberry:
                     self.app.logger.warning(
                         "Couldn't get sufficient hardware information from /proc/cpuinfo"
                     )
-                    self.app.logger.error("Unable to determine if we are on a Raspberry Pi.")
+                    self.app.logger.warning("Unable to determine if we are on a Raspberry Pi.")
                     return False
         except IOError:
             self.app.logger.error("Unable to open `/proc/cpuinfo`.")