PIR works with polling, not with interrupt

bluesmoke · **Joined:** Sat Mar 10, 2012 7:55 pm **Posts:** 3

Hi,
I am trying to get interrupt from PIR sensor to my waspmote through event sensor board. It seems to work when I read digital value from socket 7 but it never trigger interrupt.

The code I am using is the same as provided in a document and a libelium-dev guy in another thread. Here it is:
/*************************/
int value = 0;

void setup()
{
SensorEvent.setBoardMode(SENS_ON);
USB.begin();
USB.println("Start");
SensorEvent.attachInt();
}

void loop()
{
SensorEvent.attachInt();
PWR.sleep(UART0_OFF | UART1_OFF | BAT_OFF | RTC_OFF);
SensorEvent.detachInt();
SensorEvent.loadInt();
USB.begin();
USB.println(SensorEvent.readValue(SENS_SOCKET7));
delay(3000);
if (SensorEvent.intFlag && SENS_SOCKET7)
{
Utils.blinkLEDs(1000);
USB.println("PIR interruption");
}
SensorEvent.intFlag = 0;
}
/*************************/
But unfortunately I could not get anything out of it. Can any body help please

libelium-dev · **Joined:** Mon Sep 28, 2009 1:06 pm **Posts:** 7479

Hi bluesmoke,

there is a mistake in your code, could you try replacing this line

Code:

if (SensorEvent.intFlag && SENS_SOCKET7)

by this one?

Code:

if (SensorEvent.intFlag & SENS_SOCKET7)

Regards.

bluesmoke · **Joined:** Sat Mar 10, 2012 7:55 pm **Posts:** 3

Hi Libelium_dev,

I fixed that mistake and replaced the logical AND operator with bitwise as you suggested but the result is same unfortunately.

Regards,

bluesmoke · **Joined:** Sat Mar 10, 2012 7:55 pm **Posts:** 3

I tested PIR with voltmeter. It gives about 1.75V when detect presence.
One strange thing I observed is when I place the voltmeter probes over GND and VOUT pins of connector 7 (where PIR is attached) it starts triggering interrupt on movement over PIR. And when I remove the probes it stop responding again. I have tried with two PIR sensors and two event sensor boards..no success yet :(

libelium-dev · **Joined:** Mon Sep 28, 2009 1:06 pm **Posts:** 7479

Dear bluesmoke,

The sensors seem to be faulty, so we will be handling this via the Technical Service.

Best regards