Hi, I finally had some time to play with my pce-322a and now I'm almost done with a first implementation of recovering its memory. I have a few questions though:
- The memory is a sequence of recordings that start with a header (containing some flags and a timestamp). This timestamp is obviously a very important piece of information about past recorded measurements, but I haven't found any way to provide them to the sr_session_send() function. Right now I can only print the timestamps on stderr using something like sr_info(), so it's pretty lame, since stderr and stdout need not be synced. Do you have any suggestion on how to handle this before I submit a patch? - I still haven't fully figured out all the semantics of the header flags. Is it ok to submit a patch with only partial support? (currently, it only supports the dBA/dBC flag of recordings, not fast vs. slow nor measurement ranges) - Experimenting with my pce-322a device has unearthed some minor differences with what is currently described on the wiki page [*]. I'd be happy to update the page if you gave me an account. It could be interesting to see if the differences are due to variations of the model or incomplete reverse-engineering by the original author (in CC). Matthieu [*] https://sigrok.org/wiki/PCE_PCE-322A On Sat, Oct 1, 2016 at 12:24 PM, Uwe Hermann <[email protected]> wrote: > Hi, > > On Thu, Sep 29, 2016 at 08:16:45AM +0200, Matthieu Guillaumin wrote: >> Hi, >> >> I'm a happy user of sigrok with my pce-322a SPL logger (I use it with a >> imx6-based cubox device with debian jessie, and it's working great). So >> first of all, thanks a lot for this library! >> >> There's one thing though that I haven't been able to do yet, which is, >> download the internal memory of the pce-322a (which contains recordings >> that I made on the go). Looking at the support wiki page ( >> https://sigrok.org/wiki/PCE_PCE-322A ), it seems that there is support for >> reading the memory, but I cannot seem to find how to invoke this >> functionality via sigrok-cli. > > The driver currently doesn't seem to have support for that. It's usually > done using the SR_CONF_DATA_SOURCE key, see e.g. uni-t-ut32x or > kecheng-kc-330b for examples, which you can use from sigrok-cli via the > "data_source" option (to specify whether you want live data or data from > an internal memory of the device usually). > > The protocol seems documented in the wiki indeed, so it should be doable > to create a patch to add support for this to the pce-322a driver if you > want to give it a try. > > > Cheers, Uwe. > -- > http://hermann-uwe.de | http://randomprojects.org | http://sigrok.org ------------------------------------------------------------------------------ _______________________________________________ sigrok-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sigrok-devel
