Hello Friends,
I have a legacy sensor I wanted to make remote using the UM12 1200Bps RF module…I’ve used the LN96 and UM96 both before with great success…
Well in my haste I didn’t look at all the details… I realized the My legacy sensor runs 1200 bps at 8N2, NOT 8N1…
So what am I gonna get on the other end of my UM12?? If I stuff 8n2 in and the UM12 is looking for 8n1 what will I get out?
Any work-arounds? Solutions or advice?
If the sensor is sending 8N2 and everything else is expecting 8N1, it should work just fine. The stop bits are really just a minimum idle time between the end of one byte and the start-bit of the next byte. So your sensor will be waiting an extra bit-time between each byte it sends — no big deal. The stop bits are indistinguishable from a serial line that’s briefly idle.
Some devices need a bit of time to process a received byte before they can start accepting the next one, and for those devices, you use two stop bits (or sometimes one and a half).
if you add a delay of 2 bit times or more in between each character you output, that will satisfy the 8n2 requirement.