Specify seven data bits in the serial interface. pyserial defaults to 8, but the Alpha protocol calls for 7.
@@ -28,6 +28,7 @@ class Serial(base.BaseInterface):
baudrate=4800,
parity=serial.PARITY_EVEN,
stopbits=serial.STOPBITS_TWO,
+ bytesize=serial.SEVENBITS,
timeout=1,
xonxoff=0,
rtscts=0)