I plan to use one serial com to receive GPS data and use another to receive INS data. And all these data have their own formats. But as we know, position needs these two kinds of data and they must be synchronous.
It sounds like you are referring to being synchronous in the hardware sense. It appears that you have two instruments that are streaming data and you want to make sure that each instrument is transmitting at the same time. We do not support hardware synchronization on our serial boards. Regards, Ray Kong