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martinayotte

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Posts posted by martinayotte

    UART on gpio pins Orange Pi Lite

    in Allwinner sunxi

    Posted

    What do you mean exactly ?

    UART and I2C as nothing in common, except if you mean that you are using an I2C-to-UART bridge chip such SC16IS752, which Linux kernel is able to manage with proper kernel custom build configs and overlays.

    This means that WiringPi is not used for this case.

     

    0

    I2S on Orange Pi H3

    in Reviews, Tutorials, Hardware hacks

    Posted

    Good luck ! This part isn't easy to find in bulk, none on eBay or AliExpress ...

     

    EDIT : Oh ! instead of searching PST73118BETV like schematic says, TI has some TPS73118, some on eBay.

     

    Lucky Guy ! I found that MCP1824 on AliExpress in abundance, and it seems to be pin compatible, some sellers offer them at $4 for lot of 10.

    1

    Is there a tested/reliable wifi implementatin on OPi PC?

    in Allwinner sunxi

    Posted

    I did some tests on my RPi, although I didn't got issues reproduced except some latencies, what I see after unplugging eth0 and been connected to wlan0 is a bit strange, a route rule for default gateway is still there, which can explain latencies :

      

    root@raspberrypi:~# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         10.111.111.251  0.0.0.0         UG    0      0        0 eth0
default         10.111.111.251  0.0.0.0         UG    303    0        0 wlan0
10.111.111.0    *               255.255.255.0   U     303    0        0 wlan0

     

    0

    Is there a tested/reliable wifi implementatin on OPi PC?

    in Allwinner sunxi

    Posted

    This is not an Armbian issue,  but a routing issue where packets are dispatched to one of 2 same routes rules and network system ususally send it to the first interface found, but if this one is been shutdowned, it won't goes out anymore.

    If it works on Raspberry, which I doubt (as I said, even with PCs this can occur), you can look at the "allow-hotplug" and other params to figure out why the disconnected route is still present in route rules.

     

    0

    [Orange Pi One] Looking pipe tester!!

    in Beginners

    Posted

    "-i ./video" is also wrong, it required a input file, so here is what I used and reported output :



    time ffmpeg  -t 60 -i ./Videos/dynamiteurs.mpg  -r 7 -f image2pipe -vcodec bmp  -   |  mkbitmap -x -f 3.5 -s 1 -b 1 -t 0.48 -o - |  potrace --alphamax 1.334 --turdsize 2  --longcurve --turnpolicy black -b pdf -o ./pdf-file-output.pdf
    ffmpeg version 3.2.5-1~bpo8+1 Copyright (c) 2000-2017 the FFmpeg developers
      built with gcc 4.9.2 (Debian 4.9.2-10)
      configuration: --prefix=/usr --extra-version='1~bpo8+1' --toolchain=hardened --libdir=/usr/lib/arm-linux-gnueabihf --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --disable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
      libavutil      55. 34.101 / 55. 34.101
      libavcodec     57. 64.101 / 57. 64.101
      libavformat    57. 56.101 / 57. 56.101
      libavdevice    57.  1.100 / 57.  1.100
      libavfilter     6. 65.100 /  6. 65.100
      libavresample   3.  1.  0 /  3.  1.  0
      libswscale      4.  2.100 /  4.  2.100
      libswresample   2.  3.100 /  2.  3.100
      libpostproc    54.  1.100 / 54.  1.100
    Input #0, mpeg, from './Videos/dynamiteurs.mpg':
      Duration: 00:00:27.26, start: 0.066733, bitrate: 9321 kb/s
        Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, progressive), 352x480 [SAR 20:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
        Stream #0:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    [swscaler @ 0x7f6d2e80] No accelerated colorspace conversion found from yuv420p to bgr24.
    Output #0, image2pipe, to 'pipe:':
      Metadata:
        encoder         : Lavf57.56.101
        Stream #0:0: Video: bmp, bgr24, 352x480 [SAR 20:11 DAR 4:3], q=2-31, 200 kb/s, 7 fps, 7 tbn, 7 tbc
        Metadata:
          encoder         : Lavc57.64.101 bmp
    Stream mapping:
      Stream #0:0 -> #0:0 (mpeg2video (native) -> bmp (native))
    Press [q] to stop, [?] for help
    frame=  192 fps=2.0 q=-0.0 Lsize=   95050kB time=00:00:27.42 bitrate=28388.3kbits/s dup=0 drop=625 speed=0.282x    
    video:95050kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%

    real    1m40.470s
    user    2m16.770s
    sys    0m1.840s
    root@orangepione:~# ll pdf-file.pdf
    -rw-r--r-- 1 root root 436971 Jul  4 09:01 pdf-file.pdf

    0
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