#131 flushInput() breaks connection

[Phil]

The flushInput() command seems to break my serial connection and doesn't allow for further reads. I can set up a connection, read perfectly fine, but after a flushInput() command any further read statements return no data. The inWaiting() command also returns 0. In order to receive more data I have to power cycle my device and restart the connection.

I'm using Python version 2.7.2, pyserial version 2.6, and mac OS X version 10.6.8

At the moment I'm hooked up to an arduino Uno. I had this same problem hooked up to a rs422 - usb converter.

Here's the commands I use:

>>> import serial as sr
>>> ser = sr.Serial('/dev/tty.usbmodem621',9600)
>>> ser.inWaiting()
1020
>>> ser.flushInput()
>>> ser.inWaiting()
0
>>> ser.inWaiting()
0
>>> ser.inWaiting()
0
>>>

It will continue to contain 0 data indefinitely.

[Chris Liechti]

Works for me. So my guess is that either that other device is no longer sending data or the serial port driver could be buggy.

[Jacob Pfeifer]

I am having the same error on OS X 10.10.5 python 2.7.10 pyserial 2.7, it seems to only happen when the input buffer is full before the flush happens

[Jacob Pfeifer]

Iterestingly it appears that if you call cat on the tty twice pyserial will resume communication. the first cat returns nothing while the second returns a stream of data (or at least with my device it does)