On Sun, Oct 26, 2014 at 01:01:06PM +0100, Bert Vermeulen wrote: > > >> The problem is that I don't know if that is currently possible. > >> It is easy to put data from multiple channels into one packet, > >> but the problem is that in this case the different channels > >> have different MQs and units. Is there currently some way that > >> would allow sending a packet that contains multiple measurements > >> with independent MQs and units each? > > > > No, unfortunatly it is not currently possible. > > I agree with you about this problem, and IMHO, it would be nice > > if we could output simultaneously several MQs on a single channel. > > This would also benefit PPS which can report both V and A for each > > channel. > > If you have a concrete proposition to go in this direction, I > > would like to here the opinion of other developpers. > > The need for this has come up before, in the context of logic + analog data > that refers to the same time period, e.g. input and output of some ADC. The > frontend would need some way to sync up the two streams. > > And indeed, the PPS example is a good one. Some of these devices allow for > grabbing voltage and current measurements at the same time from the internal > measurement averages, but sigrok doesn't permit reporting them as synced > measurements.
Yes it does. We already have a way to represent this. The SR_DF_FRAME_BEGIN and SR_DF_FRAME_END packets are used to group sets of packets to indicate they contain synchronised data. This is already implemented by some of our scope drivers, e.g. for a Rigol DS1052D you will see a set of packets like this for each frame: SR_DF_FRAME_BEGIN SR_DF_ANALOG (CH1) SR_DF_ANALOG (CH2) SR_DF_LOGIC (D0-D16) SR_DF_FRAME_END The same approach should be applicable for any other synchronised measurements IMO. Martin ------------------------------------------------------------------------------ _______________________________________________ sigrok-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sigrok-devel
