My digital line passing works with 2 s1 xbees but once I set sm =1 the line passing functionality stops working. I tried different combinations setting pin 9 high/low and cts (Pin 12 I believe) high/low. I read in the manual cts needs to be set 2byte cycles prior to pin 9 set to ground. Can anybody explain how cts is involved and what I'm doing wrong. I've set sm back to 0 and the digital line passing works again.
Thanks in advance!