while in sleep mode does the data will transfer or not

[ps_anu]

hii............

how to know the device undergone into sleep mode and more  in sleep mode the data will get transfer or not ..

[Susheel Nuguru]

how to know the device undergone into sleep mode

 do a power measurement before and after sleep and you will know the difference (based on type of sleep).

 

in sleep mode the data will get transfer or not ..

 The peer who is receiving data, should know if the data is being transferred or not. If it is a radio data you are talking about, you can sniff the air packets using a sniffer. If it is serial data, then you can sniff the data using logic analyzer.

[ps_anu]

 The peer who is receiving data, should know if the data is being transferred or not.

by this statement you are saying to check the central device whether the data is received or not 

[Susheel Nuguru]

assuming that the sleeping device is peripheral, then yes, you should check the central to see if the data is transferred when peripheral MCU is in sleep mode but yet radio is active. The other way is to check the air sniffer log.

[ps_anu]

so by your statement while the peripheral device set as sleep mode ,there will be no data transfer between the central and peripheral right ??

[Susheel Nuguru]

No, I did not say that. There could be communication between two devices even if the peripheral MCU is in idle sleep (not deep sleep). Even if the MCU is in sleep, there could be radio activity in the peripheral. But the problem is that since the MCU in peripheral is in sleep, you cannot detect the activity within the peripheral while there is ongoing radio activity. So you need to detect this activity outside the chip (air sniffing or on the central side)