XBee series 2 radio response contains extra data

XBee & XBee Gateway
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1

Hi,

I have one XBee series 2(Coordinator) connected to Raspberry Pi B+ and XB series 2(router) connected another Raspberry pi 2. When I am trying to send data from router to coordinator there are extra characters prefixed and postfixed with actual value.

e.g.
{‘id’: ‘rx’,
‘options’: ‘\x01’,
‘rf_data’: ‘~\x00\x15\x10\x01\x00\x00\x00\x00\x00\x00\xff\xff\xff\xfe\x00\x00#100000\xaf’,
‘source_addr’: ‘91’,
‘source_addr_long’: ‘\x00\x13\xa2\x00@\xdc\x88n’}

in above sample response message only “#100000” is actual value rest all is unwanted data!!

I am using a python script to send and receive data.

why is extra data coming and how to remove it??

2

It is part of the API frames. Try switching to transparent mode.

3

Hi Thanks for your response…

Router is in AT mode (22A7) and Coordinator is also in AT mode(20A7). Still I am receiving extra character when I send a message from router to coordinator.

Both the radios are near my Wi-Fi router …will it affect Xbee communication??

4

No being next to a wifi router will not cause additional data. It would only force the radio to use a different frequency.

Can you provide the data you are sending into the UART as well as what you are getting out?

5

I have changed the both Xbee’s mode to API and now there is no issue with extra data or one-way communication… :slight_smile:

Is it recommended to use API mode only, when using XBee with raspberry pi?

Is there any setting to force Xbee to use same channel and connect to same coordinator after reboot?

6

No, you don’t need to but most of your already built Library’s are designed to work with the radios in API mode.