Hi,
I have a question aboutt using Cricket mote to detect the ultraound
pulse. Suppose I have two motes, one sends ultrasound pulse
and one receiver to detect the ultrasound pulse. I am sure that the
sender sends ultrasound correctly, but the
receiver can not detect it. Here is the code on the receiver
stdcontrol.init(){
call UltrasoundControl.SetGain(64);
}
/* timer fires every 5500ms*/
Timer.fired() {
call UltrasoundControl.StartDetector(5000);
}
async event result_t UltrasoundControl.PulseDetected(uint16_t timer)
{
call Leds.yellowToggle();
return SUCCESS;
}
The problem is that the yellow led never toggle. Is the SetGain
function used correctly?
Could any one give me some help? Thanks.
- Hui
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