A method for frequency agility in a wireless embedded system, the wireless embedded system comprising a WAP and a WEP communicating on a current channel, includes determining a first channel table comprising an order of available channels for the WAP; determining a second channel table for WEP, wherein the first channel table and the second channel table list the available channels in the same order; in the event interference is detected by the WAP on the current channel, determining a new current channel by testing the available channels for interference in the order listed in the first channel table; and in the event the WEP does not receive an acknowledgement from the WAP of a message sent by the WEP to the WAP, resending the message on each of the available channels in the order listed in the second channel table until an acknowledgement is received from the WAP.