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Xbee Baud Rates on Propeller? — Parallax Forums

Xbee Baud Rates on Propeller?

mhamen3mhamen3 Posts: 69
edited 2012-11-30 09:29 in Propeller 1
I'm just curious. What is the fastest xbee baud rate people have been successful with using the propeller?

Comments

  • John AbshierJohn Abshier Posts: 1,116
    edited 2012-11-29 13:51
    I've used 115,200, transmit only.

    John Abshier
  • mhamen3mhamen3 Posts: 69
    edited 2012-11-29 22:37
    What about prop to prop, what baud rate can you send and receive at?
  • Tracy AllenTracy Allen Posts: 6,667
    edited 2012-11-30 09:29
    XBees communicate over the air at 250kBaud, so that is a hard limit. Also, you have to add in overhead for the packet headers.

    Also note that the serial host interface at 115200 b/s is dicey, due to a baud rate mismatch. According to the XBee manual, and explained on the John Fos FAQ, the XBee "115200" baud rate clock is actually 16MHz/9/16 = 111111 b/s, a 3.5% mismatch. So either use 2 stop bits or 111111 b/s for the Prop<->Xbee link. It should be possible to achieve throughput at that rate.
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