To achieve what you want to do in TinyOS. You just need to modify the
following for single reading per packet.
// Oscilloscope.h
typedef nx_struct oscilloscope {
nx_uint16_t version; /* Version of the interval. */
nx_uint16_t interval; /* Samping period. */
nx_uint16_t id; /* Mote id of sending mote. */
nx_uint16_t count; /* The readings are samples count * NREADINGS
onwards */
nx_uint16_t reading;
} oscilloscope_t;
// OscilloscopeC.nc
event void Timer.fired() {
if (!sendbusy && sizeof local <= call AMSend.maxPayloadLength())
{
memcpy(call AMSend.getPayload(&sendbuf), &local, sizeof local);
if (call AMSend.send(AM_BROADCAST_ADDR, &sendbuf, sizeof local) ==
SUCCESS)
sendbusy = TRUE;
}
if (!sendbusy)
report_problem();
/* Part 2 of cheap "time sync": increment our count if we didn't
jump ahead. */
if (!suppress_count_change)
local.count++;
suppress_count_change = FALSE;
if (call Read.read() != SUCCESS)
report_problem();
}
event void Read.readDone(error_t result, uint16_t data) {
if (result != SUCCESS)
{
data = 0xffff;
report_problem();
}
local.reading = data;
}
/* delete all uint8_t reading, the counter for number of sensor reading */
not sure what you mean by TSR? temperature sensor? the original code
only wire the sensor reading to DemoSensor, which is a voltage sensor
available on most of sensor platforms.
if my guess is right, you only need to check the Sensor component you
are using and wire OscilloscopeC.Read to it. for example, you will wire
OscilloscopeC.Read -> new TempC() /* for temperature on MTS300/310 */
OscilloscopeC.Read -> new SensirionSht11C().Temperature /* for
temperature on Tmote Sky */
regards;
Peizhao
Saif A. Al-Hiddabi wrote:
Hi,
I need some help to modify the Oscilloscope application so that it reads
only the TSR sensor and not the entire set of sensors. I also need to
have one reading per packet sent. The current Oscilloscope application
sends 10 readings per packet for the six sensors and this makes the
application slow. I tried to see where this can be modified in
“OscilloscopeTmoteSkyM.nc” and “OscilloscopeTmoteSky.nc” but no luck and
things looks complicated in the code. Thanks in advance for any help.
Regards,
SAIF
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