Arduino Sleep / Wake On Interrupt?

[elmezie]

Hello,
Is it possible to have the arduino in sleep mode and wake up when a message arrives to the NRF24l01 Radio?

I have PIN 8 (IRQ) of the NRF24l01 connected to PIN D2 of the sleeping nano node. When the sleeping nano node goes to sleep, I send a message to the node from another , however the sleeping node does not awake when this happens. Is this possible to do?

Below is the code I am using, thanks!

#include <MySensor.h>
#include <SPI.h>
 
#define ID 0
#define OPEN 2
#define CLOSE 0
 
MySensor gw;
MyMessage msg(ID, V_TRIPPED);
 
void setup() 
{ 
	Serial.begin(115200);
	Serial.println("Starting up Sensor Test");
  	gw.begin(incomingMessage,1,false);
	gw.present(ID, S_DOOR); 


}
 
void loop()
{
	// Process for 10 Seconds
	gw.wait(10000);
	// Sleep 10 Seconds
	gw.sleep(2, CHANGE, 10000);
}



void incomingMessage(const MyMessage &message) {
    
	if(message.getInt() == 1){
		Serial.println("Received command");
		gw.send(msg.set(OPEN)); 		
  	delay(250);
  
}

[hek]

Yes, it would be possible. But you won't save much juice as keeping radio in listening mode still requires way too much power to be able to run on batteries for any substantial time.