En , I will combine CD & IQR or status register together.
My device works normally most of the time but some time (about last 10 mins) has high number of retransmits. I think it is disturbed by WLAN in the office. Am I right?
Do you have any application reference about avoiding noise from WIFI and Buletooth?
Do they have line of sight, or are there walls or other things in between?
Do you run communication in a single, static channel, or do you use some kind of frequency jumping scheme?
The most common way to handle interference is to switch to a different RF frequency when the number of retransmits increases. By using several different channels across the 2.4GHz ISM band you can typically find a free channel that is not affected by WiFi unless you have many different WiFi networks in close proximity.
We made the Gazell protocol for this very purpose. It uses an nRF24L series radio at its core, and adds functionality to switch the frequency automatically when the retransmit count is high.
