digi.xbee.exception.InvalidOperatingModeException: Unsupported operating mode: AT mode

I’m trying to use this library in a Raspberry Pi 3 with two modules XBEE S1. I have checked the correct operation of API mode [1] with a hyperterminal with different XBEE whit fixed PAN ID and CH. But, if I run the basic example:

from digi.xbee.devices import XBeeDevice
....
device = XBeeDevice('/dev/ttyS0', 9600)
device.open()
...
device.send_data_broadcast ("Hello XBees!")
...
device.close()

I get this error:

File "/home/pi/JairoC/ApiModeService.py", line 73, in <module>
      device.open()
File "usr/local/lib/python3.5/dist-packages/digi_xbee-1.1.0-py3.5.egg/digi/
xbee/devices.py", line 1262, in open
       raise InvalidOperatingModeException.from_operating_mode(self._operating_mode)
digi.xbee.exception.InvalidOperatingModeException: Unsupported operating mode: 
AT mode

I don’t know what to do… Sometimes the application works and send information but with a long process or parallel trading, the error is presented.

Any help will be valued

[ciel77]

I have similar issue with XBEE SX running on RPi 3. I am using 1 digi modem, and have another serial port device also connected via USB.

This AT mode exception happens every time I plug in both devices. But if only digi device is connected, it’s working fine.

So is there a fix for multiple devices connected to USB ports?

[ghost]

I got this error when I plug the xbee into the socket but shifted up so the first two pins were not plugged in.