Hi David, Sounds exciting with the new modes.
Earlier this week I made a quick hack integrating the freedv_api into the remote sdr client by Moe Weatley AE4JY so I can listen to hams in the US using RFSpace radios located in the US (screenshot: http://imgur.com/q6rriY4). I can make my source changes available if anyone is interested but it is really just a hack and requires people to know how to handle a compiler and linker to make it build. I have an IC-706MkIIG with detachable front panel and I have been working on a "remoterig" interface so that I can have the front panel in my car and the radio at home and the two talk to each other over TCP. The serial/audio to TCP interface runs on a Beaglebone so adding freedv will be easy :-) On the SDR side I have been working on some software to run on commonly available ARM boards and also with remote control interface. Initially it will support SDR-IQ, Funcube Dongles and SoftRock type transceiver kits. I hope to have something usable in January. Alex On Sat, Dec 20, 2014 at 1:06 AM, David Rowe <[email protected]> wrote: > Thanks Alex, I added that scaling for the out of sync case. I'm glad > the API worked out for you. I'll be adding new HF modes and a VHF mode > over the next few months. > > What sort of hardware/SDR setup do you have? > > Thanks, > > David > > On 20/12/14 09:17, Alexandru Csete wrote: >> Hi David, >> >> Thanks for the update. With these latest changes I no longer observe >> the issue I was having. I'll do more testing over the next weeks as I >> integrate freedv with my hardware and SDR setups. The freedv_api is >> really great and easy to use. >> >> I did notice a small issue though. At the end of freedv_floatrx() when >> there is no sync, the samples in demod_in[] are not scaled back with >> FDMDV_SCALE. >> >> Alex >> >> >> >> On Thu, Dec 18, 2014 at 12:55 PM, David Rowe <[email protected]> wrote: >>> Hi, >>> >>> I haven't been able to repeat this problem or find the root cause. >>> >>> However I have added some code to trap the problem (an assert in >>> golay23_decode()), and some code to help prevent invalid codewords being >>> built up in freedv_floatrx(). >>> >>> It's tested with freedv_tx/freedv_rx, and checked into codec2-dev SVN. >>> >>> Cheers, >>> >>> David >>> >>> On 18/12/14 20:33, Alexandru Csete wrote: >>>> On Sat, Aug 9, 2014 at 11:52 PM, Bruce Perens <[email protected]> wrote: >>>>> David, >>>>> >>>>> golay23_decode() overruns a table once in a while because the unpacked >>>>> bit array has garbage in it. Some value is greater than 1 and the input >>>>> code word ends up negative. I ran Valgrind to see if it was a problem in >>>>> my code, and didn't see any wild memory references, but I do get >>>>> uninitialized data as input to a conditional switch complaints as >>>>> detailed in my last email. >>>> >>>> Greetings, >>>> >>>> I have run into this same issue few days ago while using the >>>> freedv_api. On one computer running 64 bit linux and gcc 4.8 I didn't >>>> have this issue. On another one running 32 bit linux and gcc 4.9 it >>>> happened every time after running the application for a few seconds. >>>> Perhaps it also depends on optimization level. >>>> >>>> I worked around it by using calloc instead of malloc for allocating >>>> tx_bits and rx_bits, though it seems that the problem is somewhere >>>> else. >>>> >>>> Alex >>>> >>>> ------------------------------------------------------------------------------ >>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>>> from Actuate! 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