On Mar 28, 2007, at 2:38 AM, Jorge Grande wrote:
Hello everybody,
I'm using TinyOS 2.0 and I'm trying to write an application for two
micaz motes using the microphone. One of the two motes (mote 1)
will beep each 1000 ms and the other one (mote 2), once it has
detected the tone, will toggle the green led (if it doesn't detect
the tone, it will turn one the red led). This mote checks every 50
ms if the tone has been detected; I'm using command startPeriodic
including in tos/lib/timer and command readToneDetector including
in tos/sensorboards/mts300/MicSetting.nc.
Here is part of the mote 2 application:
...
event void Timer.fired() {
if (call MicSetting.readToneDetector() == 0) //tone has been
detected
{call Leds.led1Toggle();}
else // tone has not been detected
{call Leds.led0On();}
}
async event error_t MicSetting.toneDetected() {
return SUCCESS;
}
...
The problem is that mote 2 is continuously toggling the green led,
even if mote 1 is not beeping but I don't know why.
Can anyone help me?
I'd email the folks who wrote the drivers; I'm not sure they all
ready tinyos-help regularly. It looks like the driver is just
checking an interrupt line when it does this test. Looking at the
code, it seems like it just returns 1 when the line is high and 0
when it's low... which suggests that the documentation of the return
value is incorrect. Does the LED toggle when there is a tone, or does
it stop toggling?
Phil
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