Tino de Bruijn avatar Tino de Bruijn committed dfcaa00

Added function to query Board for available bytes.

Since Board.iterate() blocks, this is useful.
It's coherent with Arduino's Serial.available
and it returns a more pythonic 0 when there's
nothing waiting instead of Arduino's C-like -1

Thanks to nickraptis

Comments (0)

Files changed (2)

pyfirmata/pyfirmata.py

             self.sp.write(byte)
         self.sp.write(chr(END_SYSEX))
         
+    def bytes_available(self):
+        return self.sp.inWaiting()
+
     def iterate(self):
         """ 
         Reads and handles data from the microcontroller over the serial port.

pyfirmata/util.py

     def run(self):
         while 1:
             try:
-                while self.board.iterate():
+                while self.board.bytes_available():
                     self.board.iterate()
                 time.sleep(0.001)
             except (AttributeError, serial.SerialException, OSError), e:
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