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WMBus sync word problem

Other Parts Discussed in Thread: CC1101, WMBUS, MSP430F5528

Hi All,

I am using MSP430F5528 and CC1101 for wmbus communication. so on other hand I have radiocraft wmbus module.

when I put my device in meter mode(S2) it communicates with radiocraft module correctly(both TX/RX). Suppose if I put my device in other(master) mode, I can receive packets on my device from radiocraft module and but transmission of data to radiocraft module is not working.

I am using wmbus example from Ti.

what I am suspecting is that it may be problem with my preamble/SYNC word transmission.   

from 

From Application Note AN067( Wireless MBUS Implementation with CC1101 and MSP430) , I found short and long preamble. can somebody explain me, In s2 mode other, which preamble type must be used ?  

waiting for reply.