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210 Commits

Author SHA1 Message Date
Tom Swartz a153026645 Update README 2017-10-26 17:13:38 -04:00
F5OEO 38079ca8bc Merge pull request #72 from bskari/avconv 
Fix Python interface and add support for broadcasting any avconv supported media
 2017-07-19 20:09:05 +02:00
Brandon Skari 53f573b4fd Improve some documentation, bump version # 2017-06-16 14:44:11 -06:00
Brandon Skari cc0d5e2baf Fix reading wav samples 
Wave samples are stored as a 16 bit little endian signed integer, and
then converted to floats by dividing by 32768. I was reading in numbers
as unsigned.
 2017-06-15 01:29:48 -06:00
Brandon Skari b7826adc22 Skip to data section regardless of file format 
PCM WAV files should have the "data" header in a specific place, but
whatever format avconv spits out has it further on. Just read until we
hit that.
 2017-05-26 21:31:15 -06:00
F5OEO 1f7357e6dd Fixed if WaitNano is very short 2017-05-19 09:37:25 +00:00
Brandon Skari 5dac2164cb Log debug output from avconv; catch exceptions and properly join avconv thread 2017-05-18 00:02:21 +00:00
Brandon Skari da2b5b04b3 Simplify error reporting; work around some confusing problems with avconv 2017-05-17 23:57:13 +00:00
Brandon Skari ce21edcfe3 Fix data fill loops 2017-05-17 23:54:00 +00:00
F5OEO 8d9bc02136 Clean code : remove ole FrequencyAmplitude function 2017-05-17 14:24:52 +00:00
F5OEO 34344e7b66 Set a /2 step delay in timing calculation 2017-05-17 14:12:48 +00:00
F5OEO 6e598dd32c Shorter calibration 2017-05-17 08:39:35 +00:00
Brandon Skari 95c61179ed Update dependency requirements 2017-05-15 15:40:59 -06:00
Brandon Skari bcc68e6973 Try to open /dev/mem before calling rpitx 
mailbox.c tries to open /dev/mem and calls exit if it doesn't have
permission, which will forcefully exit the Python runtime. Try to open
it and throwing an exception if it fails before umping into C to give
users a chance to recover.

Also, because avconv is writing to a pipe, having the read end of the
pipe unexpectedly close breaks the terminal. I kept having to run
`reset` to get it back.
 2017-05-15 15:35:51 -06:00
Brandon Skari b85ece8df6 Remove dependency on libsndfile 
Wav files include the length of the data in the file header. libsndfile
expects this length to be there and be sane. Unfortunately, when piping
data from avconv, this length is dummied out because the full length is
not known yet, so libsndfile can't be used to process a pipe data
stream. This removes the libsndfile dependency and replaces the used
functions with hand written ones.
 2017-05-15 15:11:09 -06:00
F5OEO d1c4aae346 Add auto calibration - Fixe a timing in sstv 2017-05-15 16:08:47 +00:00
F5OEO f9022c0ed8 Add calibration tab for pizero,pi2,pi3 2017-05-15 10:26:20 +00:00
F5OEO 0ddd7c521c Fine tuning timing 2017-05-12 13:41:41 +00:00
F5OEO 7376e2f66f Rewrite FrequencyAmplitude - Sample Timing BIG fixed 2017-05-11 14:47:12 +00:00
Brandon Skari 8f25432e4f Start processing data from pipe 
ffmpeg is being weird. Wave files start with a header consisting of the
text "RIFF", followed by 4 bytes for the length of the data chunk. But
because we're streaming to a pipe, that value isn't known yet, so it
just fills in 0xFFFFFFFF. libsndfile apparently doesn't like this and
quits with the message "Error in WAV file. No 'data' chunk marker." I
think I might need to drop libsndfile and manually process the data.
 2017-05-10 17:47:28 -06:00
F5OEO aae9fbc7e7 Set PLL to 1.1GHz to avoid spurious on 144MHZ due to Mash 2017-05-09 13:07:16 +00:00
F5OEO 3aa2badc3d Add unwrap in IQ->frequency : remove unwanted frequency >samplerate/2 2017-05-09 09:56:36 +00:00
F5OEO 6ec9f5a623 Trial pull on clk pin : no change 2017-05-05 12:09:40 +00:00
Brandon Skari 6dfb5ba5b0 Ignore stdout from subprocess; add debug logging 2017-05-04 13:52:03 -06:00
Brandon Skari 87cac9d4f6 Extract and convert audio using ffmpeg or avconv 2017-05-04 12:11:56 -06:00
F5OEO 6a73eda84f Mash and harmonic 2017-05-04 15:34:06 +00:00
F5OEO 069faf32dd New experimental calculation of amplitude 2017-05-04 10:30:37 +00:00
F5OEO e0a7e71109 Issue #59 fixed : wrong harmonic calculation 2017-05-03 13:00:47 +00:00
F5OEO e1d90e5a29 Clean unused files 2017-05-03 09:38:38 +00:00
F5OEO 264dd932c9 Add test and Makefile for opera 2017-05-03 09:26:57 +00:00
F5OEO 26675b5bf1 Opera for rpitx 2017-05-03 09:07:33 +00:00
F5OEO d1144e3e07 Fixe ppm to get in account 2017-05-02 13:08:59 +00:00
F5OEO f5b62cc405 Use atan2 for precision and PWMF random fixed 2017-04-29 09:54:21 +00:00
Brandon Skari 5d31e1ea07 Fix Python 3 2017-04-28 16:49:44 -06:00
Brandon Skari 2c0bf1b33a Fix Python interface 2017-04-28 15:03:25 -06:00
F5OEO aa67743458 Shuffle to remove spurious and begining of calibration 2017-04-26 17:06:53 +00:00
F5OEO bfa3447731 Update README.md 
Add warning about transmitting.
 2016-10-11 09:01:37 +02:00
F5OEO 4f9a546c54 Execute rpidatv here 2016-09-03 23:15:22 +00:00
F5OEO b58307a835 Fix by Gaonim with Args 2016-09-03 13:38:09 +00:00
F5OEO fdf239144d Merge branch 'master' of http://github.com/F5OEO/rpitx 2016-09-02 13:22:22 +00:00
F5OEO 9648bc4beb Add Gaionim pyhthon dcf77 generator : works on setting my clock 2016-09-02 13:20:06 +00:00
F5OEO 25e5869d2e Clear code, work on DMA timing and calibration 2016-09-02 09:59:25 +00:00
F5OEO bbdcba4f1d DMA PWMF (2nd DMA) not used anymore and could block on terminate 2016-08-30 08:51:15 +00:00
F5OEO 1212d05256 Merge pull request #32 from redfast00/improve-docs 
Improved README formatting and wording
 2016-08-28 11:36:08 +02:00
redfast00 1c0bc9df9e
Improved README formatting and wording 2016-08-27 20:34:27 +02:00
F5OEO 177e7ef74a DMA 5 instead of 14 2016-08-27 15:00:52 +00:00
F5OEO feb6f4cf3e utils.h no longer required with rasperbbery-pi-revision 2016-08-27 13:30:45 +00:00
F5OEO 10bef28674 Change to DMA 14 2016-08-27 13:29:30 +00:00
F5OEO 5e6ab3dc4a Remove prompt on apt-get 2016-08-27 13:28:33 +00:00
F5OEO bb06fd1e69 Modify models to all raspberry pi models at this time 2016-08-27 13:28:01 +00:00