Hi all,
I don't understand the readings I get when I try to sense light by using
PhotoC().
I am using mica2 on tinyos-2.0. Now what I did was I made few changes to the
Oscilloscope example. So now I am wondering if the way I tried to sense light is
even correct!?
what I did is the following:
After coping all the Photo files from /opt/tinyos-2.x/tos/sensorboards/basicsb
to the Oscilloscope directory:
Firstly, in the OscilloscopeAppsC.nc file:
I left everything as it is, except I changed the new DemoSensorC() as Sensor to
new PhotoC() as Sensor.
so when i did the wiring, I changed it to OscilloscopeC.LightRead -> Sensor;
configuration OscilloscopeAppC { }
implementation
{
components OscilloscopeC, MainC, ActiveMessageC, LedsC,
new TimerMilliC(), new PhotoC() as Sensor,
new AMSenderC(AM_OSCILLOSCOPE), new AMReceiverC(AM_OSCILLOSCOPE);
......
OscilloscopeC.LightRead -> Sensor;
......
}
Secondly, in the OscilloscopeC.nc:
I also left everything as it is, I only changed few lines:
module OscilloscopeC
{
uses {
....
interface Read<uint16_t> as LightRead;
....
}
}
then I changed the Time.fired event:
event void Timer.fired() {
.......
if (call LightRead.read() != SUCCESS)
report_problem();
}
then changed the Read event to LightRead
event void LightRead.readDone(error_t result, uint16_t data) {
if (result != SUCCESS)
{
data = 0xffff;
report_problem();
}
local.readings[reading++] = data;
}
These are the only changes I added.. so should that give me light readings or am
I on the wrong track here?? any advice would be greatly appreciated.
Thanks all.
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