configuring XBEE with prop

Lightfoot

I am trying to change the channel of an XBEE module using serial transmissions. I know this is possible but it does not seem to be entering into config mode with my code (it just transmits the plus signs to the receiver).

SERRF.STR(string("+++", 13))                          '+++ puts the XBEE into config mode but it does not.
SERRF.STR(string("CH", $C, 13, "ACTN", 13))    'These commands should change the channel.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔

Timmoore

Its been a while since I have used a xbee but if I remember correctly delays are needed either side of the +++.
I think there is a xbee object on obex why not check that for what happens with +++

Sal Ammoniac

You need a three second guard time on either side of the "+++" in the XBee's default mode.

Jay B. Harlow

Lightfoot said...
I am trying to change the channel of an XBEE module using serial transmissions. I know this is possible but it does not seem to be entering into config mode with my code (it just transmits the plus signs to the receiver).

SERRF.STR(string("+++", 13))                          '+++ puts the XBEE into config mode but it does not.
SERRF.STR(string("CH", $C, 13, "ACTN", 13))    'These commands should change the channel.

In addition to the other comments take a look at the XBee_Object object.

http://obex.parallax.com/objects/146/

As it encapsulates the delay around the "+++".

Example code for starting:
' **************************
OBJ 
    XB : "XBee_Object"       
Pub Start
    XB.start(7,6,0,9600)           ' XBee Comms - RX,TX, Mode, Baud
    XB.AT_Init                     ' Initialize for fast AT command use - 5 second delay to perform
    XB.AT_ConfigVal(string("ATMY"),$5) ' Set MY address to 5
    .
    .
 

Note you need to send just "+++" with the proper guard times before & after it. Your sample is sending +++ plus a carriage return.

Hope this helps
Jay

w8an

Beside the aforementioned guard times, take out the carriage return character after the "+++" as this will spoil the config mode command

.Steve