PHPでLチカ（PHPカンファレンス2018 懇親会）

PHP+物理のセッションが一つもなくて悲しかったので自分でやりました。
デモ動画：https://twitter.com/tomotomobile/status/1074131194567045121
ソースコード：https://github.com/tomotomo/php-led-chika

Transcript

1. 1)1Ͱ-νΧ
   4BU
   1)1ΧϯϑΝϨϯε࠙਌ձ-5
   ਿా஌ࢸ !UPNPUPNPCJMF
   
   

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2. ਿా஌ࢸ!UPNPUPNPCJMF
   w *TBBYͷ$IJFG1SPEVDU0⒏DFS
   w *P5ͷ࢓ࣄ΍ͬͯ·͢ɻ
   ࣗݾ঺հ
   ஶॻ

   ʮΤϯδχΞͷͨΊͷ8PSE1SFTT։ൃೖ໳ʯ

   ૿࡮͠·ͨ͠ʂ
   

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3. JTBBY ΞΠβοΫε
   ஌ͬͯΔਓʁ
   IUUQTJTBBYJP
   

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4. JTBBYΛ࢖͏ͱ*P5σόΠεͷ։ൃ͕؆୯
   8FCϥΠΫʹ
   *P5σόΠεʹσϓϩΠʂ
   ։ൃ؀ڥͰ্ख͘
   ಈ͍ͨ΋ͷΛ1VTI
   .255
   .255
   

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5. ࠓ೔ͷλΠϜςʔϒϧ
   

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7. ηογϣϯ
   

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8. 1)1෺ཧ
   
   

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9. IUUQTIUNMFYQFSUTKQZPVUPZΑΓ
   

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10. ͳΜͰʁ
    

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11. 1)1Ͱ෺ཧͷૢ࡞͸
    "Ͱ͖Δ
    #Ͱ͖ͳ͍
    ࣭໰
    

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12. 1)1Ͱ෺ཧͷૢ࡞͸
    "Ͱ͖Δ
    #Ͱ͖ͳ͍
    ࣭໰
    

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13. PHPͰLνΧ
    (LEDνΧνΧ)
    5%%ΑΓ%%%ΑΓ-&%Ͱ͠ΐʂ
    

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14. ࢖͏΋ͷ
    3BTQCFSSZ1J
    Ұࣜ ϒϨουϘʔυ -&%
    δϟϯύʔ
    ϫΠϠʔ
    ఍߅
    

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15. ഑ઢ͠·͢
    IUUQXXXIPXJTJUKQqJDLFSJOHMFEΑΓ
    

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16. ϥζύΠʹϩάΠϯ͠·͢
    SBTQCFSSZQJMPHJOQJ
    1BTTXPSESBTQCFSSZ
    

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17. ઀ଓ֬ೝ͠·͢
    $ echo 4 > /sys/class/gpio/export
    $ ls -1 /sys/class/gpio/gpio4
    active_low
    device
    direction
    edge
    power
    subsystem
    uevent
    value
    

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18. ઀ଓ֬ೝʢଓ͖ʣ͠·͢
    # GPI4Λग़ྗϞʔυʹ
    $ echo out > /sys/class/gpio/
    gpio4/direction
    # ஋ΛHIGH=1ʹઃఆ
    $ echo 1 > /sys/class/gpio/gpio4/
    value
    

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19. ޫͬͨ
    

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20. Φϑʹ͠·͢
    # ஋ΛLOW=0ʹઃఆ
    $ echo 0 > /sys/class/gpio/gpio4/
    value
    # ΫϦʔϯΞοϓ͠·͢
    $ echo 4 > /sys/class/gpio/
    unexport
    

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21. ͜ΕΛ
    1)1Ͱ΍ͬͯΈ·͢
    

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22. w TZTDMBTTHQJPFYQPSUϑΝΠϧ
    ʹzzΛॻ͖ࠐΉ
    w TZTDMBTTHQJPHQJPEJSFDUJPO
    ϑΝΠϧʹzPVUzΛॻ͖ࠐΉ
    w TZTDMBTTHQJPHQJPWBMVFϑΝ
    ΠϧʹzzΛॻ͖ࠐΉ
    1)1Ͱ΍Γ͍ͨ͜ͱ
    

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23. ϑΝΠϧʹॻ͖ࠐΉͱ͍͑͹ɺ
    

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24. 1)1࣮ߦ؀ڥΛ༻ҙ
    $ sudo apt update
    $ sudo apt upgrade
    $ sudo apt install php
    $ php -v
    PHP 7.0.33-0+deb9u1 (cli) (built: Dec 7 2018
    11:36:49) ( NTS )
    

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25. MFEQIQ
    define('GPIO', '/sys/class/gpio');
    define('GPIO4', GPIO.'/gpio4');
    file_put_contents(GPIO.'/export', 4);
    file_put_contents(GPIO4.'/direction','out');
    file_put_contents(GPIO4.'/value', 1);
    sleep(5);
    file_put_contents(GPIO4.'/value', 0);
    file_put_contents(GPIO.'/unexport', 4);
    

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26. ࣮ߦͩʂ
    $ sudo php led.php
    

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27. 5ඵޫͬͯফ͑ͨʂʂʂ
    ಈըɿIUUQTUXJUUFSDPNUPNPUPNPCJMFTUBUVT
    

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28. 1)1Ͱ-νΧͰ͖ͨʙʂ
    

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29. ࠷৽ͷΞϧΰϦζϜ͸JTBBY͕͓ಧ͚
    ˞Πϝʔδ
    ͢΂ͯΛ࠷৽ʹʂ
    

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30. JTBBY๨೥ձ΍Γ·͢
    !ޒ൓ా
    
    IUUQTJTBBYVHDPOOQBTTDPNFWFOU
    

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31. "QQFOEJY
    

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32. ࢀߟʹͨ͠αΠτ
    w 1)1Ͱͷ(1*0ૢ࡞c'FJKPBKQ

    IUUQXXXGFJKPBKQMBCPSBUPSZQSPHSBNNJOH
    HQJP8JUI1IQ
    w 1)1pMF@QVU@DPOUFOUT.BOVBM

    IUUQQIQOFUNBOVBMKBGVODUJPOpMFQVU
    DPOUFOUTQIQ
    w 3BTQCFSSZ1JʢϥζϕϦʔύΠʣɿ-νΧʢ-&%Λ
    ఺໓ͤ͞Δిࢠ޻࡞ʣʛಈը෇͖ʛ*5اըݚڀॴ

    IUUQXXXIPXJTJUKQqJDLFSJOH
    MFE
    

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33. զʑͷಇ͖Ͱɺզʑͷੜ׆Λվળ͠
    ੈքΛΑΓࣗ༝ʹ͠·͠ΐ͏ɻ
    *P5ΤϯδχΞཆ੒Ωοτ
    I U U Q T Y T I F M M J P J T B B Y J P U F O H J O F F S L J U
    

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