Merge pull request #35 from arduino/alvikdev-108

fix: ALVIKDEV-108 UART read extremely slow on bytewise access

Author: eigen-value

arduino_alvik/__init__.py

@@ -4,7 +4,7 @@
 
 __author__ = "Lucio Rossi <l.rossi@arduino.cc>, Giovanni Bruno <g.bruno@arduino.cc>"
 __license__ = "MPL 2.0"
-__version__ = "1.1.1"
+__version__ = "1.1.2"
 __maintainer__ = "Lucio Rossi <l.rossi@arduino.cc>, Giovanni Bruno <g.bruno@arduino.cc>"
 __required_firmware_version__ = "1.1.0"
 

arduino_alvik/arduino_alvik.py

@@ -278,8 +278,7 @@ def _flush_uart():
         Empties the UART buffer
         :return:
         """
-        while uart.any():
-            uart.read(1)
+        uart.read(uart.any())
 
     def _begin_update_thread(self):
         """
@@ -647,21 +646,22 @@ def _update(self, delay_=1):
                 self.set_behaviour(2)
             if not ArduinoAlvik._update_thread_running:
                 break
-            if self._read_message():
-                self._parse_message()
+            self._read_message()
             sleep_ms(delay_)
 
-    def _read_message(self) -> bool:
+    def _read_message(self) -> None:
         """
         Read a message from the uC
         :return: True if a message terminator was reached
         """
-        while uart.any():
-            b = uart.read(1)[0]
-            self._packeter.buffer.push(b)
-            if b == self._packeter.end_index and self._packeter.checkPayload():
-                return True
-        return False
+        buf = bytearray(uart.any())
+        uart.readinto(buf)
+        if len(buf):
+            uart.readinto(buf)
+            for b in buf:
+                self._packeter.buffer.push(b)
+                if b == self._packeter.end_index and self._packeter.checkPayload():
+                    self._parse_message()
 
     def _parse_message(self) -> int:
         """

package.json

@@ -13,5 +13,5 @@
         ["github:arduino/ucPack-mpy", "0.1.7"],
         ["github:arduino/arduino-runtime-mpy", "0.4.0"]
     ],
-    "version": "1.1.1"
+    "version": "1.1.2"
 }