Sending data from Xbee end device in sleep mode

Question

I am using XBee series 2 module for communication between arduino and computer. I have coordinator attached with computer and an end device with arduino. I want to send data from arduino after every 1 min. But the problem is i am using cyclic sleep mode on end device with ST (time before sleep = 5 sec which is default value). I first send data as soon as module is on which works fine.But then after 5 sec module enters in sleep mode. Then after 1 min i am unable to send data to computer. In fact my end device module does not communicate with arduino either. Any idea how to awake sleeping module?

Answer 1

You must use hardware flow control to know when the radio is awake or in a sleeping state. You should also adjust the SP and ST times on the module to your desired sleep and wake periods.