Electronic – arduino – XBee Pro S2B in AT mode keeps resetting the Arduino

arduinoxbee

I have just bought a whole bunch of Xbee Pro S2Bs and Freetronics Eleven boards.

When I set up the XBees in AT mode, the Arduino constantly resets. At least that's what I think it is doing – the D13 LED keeps flashing (3 times in quick succession, once per second) and the sketch won't run.

In API Mode it seems fine, but I want to use AT mode for simplicity – anyone have any ideas why AT mode would be causing the Arduino to reset?

I have already asked this question on the Arduino forum but haven't got anywhere yet …

http://arduino.cc/forum/index.php/topic,60285.0.html

Best Answer

Is the Arduino board's regulator rated for the XBee Pro's current draw?

I know Sparkfun had some issues with this, where their XBee -> computer interface board had a 150ma 3.3v regulator, and the XBee Pro needs ~ 215mA.

If the 3.3V regulator is too small, the XBee could be browning-out the local power supply as it tries to power on.

How are you connecting the XBee to the Arduino board anyways? From what I could see looking up the Freetronics board you mentioned, it doesn't have an XBee socket.

Related Solutions

Electronic – XBee-PRO broadcast configuration

Have you checked the manual? Here's a link from google.

http://ssdl.stanford.edu/ssdl/images/stories/AA236/0708A/Lab/Rover/Parts/xbeeproproductmanual.pdf

Section 2.4.2 states that to send a broadcast message, set the destination address to 0xFFFF.

Electronic – Arduino and Interrupts: Fast way to get pin values

I have a first solution myself, but i could not test the reliability as the hardware is not finished jet.

First I added oldPins and tickCount as global variables:

static byte oldPins = 0;
volatile unsigned int tickCount[4] = { 0, 0, 0, 0 };

And thats how I solved the ISR at the moment. Better solutions are more than welcome.

ISR( PCINT2_vect ) {
  //Read values from digital pins 2 to 7
  const byte actPins = PIND;
  //Match this values agaist the oldPins bitmask (XOR and AND for raising edge)
  const byte setPins = (oldPins ^ actPins) & actPins;

  if (setPins & 0b00000100)
    tickCount[0]++;
  if (setPins & 0b00001000)
    tickCount[1]++;
  if (setPins & 0b00010000)
    tickCount[2]++;
  if (setPins & 0b00100000)
    tickCount[3]++;

  oldPins = actPins;
}

Best Answer

Related Solutions

Electronic – XBee-PRO broadcast configuration

Electronic – Arduino and Interrupts: Fast way to get pin values

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