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RASPBERRY PIߨशձ PART3: IOT WITH RASPBERRY PI 2018೥ౙɹখ໺ً໵

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લճͷ෮शQUIZ Q1ɹγΣϧͷओͳ໾ׂ͸Կʁ Q2ɹCUIʹΑΔίϚϯυૢ࡞͸{1.Ϋιɹ2.ਆ}Ͱ͋Δɻ Q3ɹaptͬͯԿʁ Q4ɹLinuxγεςϜͷ؅ཧऀϢʔβ͸Կʁ

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PYTHONͷ෮श def get_average(mylist, size): “""ؔ਺ݺͼग़࣌͠ʹ mylist = score, size = 4ͷ୅ೖ͕ߦΘΕΔ""" sum = 0 for i in mylist: sum += i # a += 1 ͸ a = a + 1Λҙຯ͢Δ return sum / size score = [70, 82, 88, 90] average = get_average(score, 4) print("average:{}".format(average))

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ࠓճͷ໨ඪ webαʔόʔΛཱͯΔʂ ϒϥ΢β͔ΒLEDΛ఺౮ʂ ͍·όζͬͯΔIoTͱ͍͏΍ͭͰ͢ɻ

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αʔόɾΫϥΠΞϯτߏ੒ αʔόଆͷίϯϐϡʔλͱΫϥΠΞϯτଆͷ ίϯϐϡʔλʹ෼͚ͯͦΕͧΕͷ໾໨Λ ੾Γ཭͢ɻ

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ϦΫΤετΛ޷͖ͳλΠϛϯάͰૹΓ ϨεϙϯεΛ΋Β͏ɻ ྫʣϒϥ΢β ΫϥΠΞϯτ

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αʔό ϦΫΤετʹରͯ͠ϨεϙϯεΛฦ͢ɻ ϦΫΤετΛ͡ʔʔͬͱ଴ͭɻ webαʔόɺFTPαʔόɺDNSαʔόͳͲ

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ࠓɺͲ͜ʹ͍Δʁ αʔόɾΫϥΠΞϯτߏ੒ͰϓϩάϥϜΛॻ͘ͱ͖͸ɺ ࣗ෼͕ࠓͲͪΒଆΛ࡞͍ͬͯΔͷ͔ҙࣝ͠Α͏ɻ

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webαʔό ɹ HTTPϓϩτίϧʹج͍ͮͯσʔλͷ΍Γ औΓΛ͢Δαʔόͷ͜ͱ

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HTTPϓϩτίϧ hypertext transfer protocol ϋΠύʔͳςΩετΛτϥϯεϑΝʔ͢Δͨ Ίͷϓϩτίϧɻ

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௨৴ϓϩτίϧ ௨৴Λߦ͏ͨΊʹඞཁͳऔΓܾΊ έʔϒϧͷίωΫλͷܗঢ়͸ʁ σʔλͷઌ಄10όΠτ͸ԿΛද͢ʁɹͳͲͳͲ SSHͱHTTPͰ͸࣮ݱ͍ͨ͜͠ͱ͕ҟͳΔͨΊҟͳΔϓϩτίϧ͕༻͍ΒΕΔ

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ϋΠύʔςΩετ ͨͩͷจࣈ͚ͩͰͳ͘ɺਤɺදɺͳͲΛදݱͰ ͖ɺϦϯΫʹΑͬͯผͷςΩετΛࢀরͰ͖Δ Α͏ʹͳ͍ͬͯΔςΩετϑΝΠϧͷ͜ͱ

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HTML hypertext markup languageɹ ϋΠύʔͳςΩετͷ୅ද֨ɻ

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webϑϨʔϜϫʔΫ webΞϓϦέʔγϣϯΛ࡞Δࡍʹେ఍ඞཁͱͳΔػೳΛ͋ Β͔͡Ί·ͱΊͨ΋ͷɻ ͲΜͳϑΝΠϧΛͲ͜ʹ഑ஔ͢Δ͔͕ఆΊΒΕ͓ͯΓɺͦ ͷܾ·ΓʹԊͬͯϓϩάϥϜΛॻ͘

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ϥΠϒϥϦ Α͘࢖͏ػೳʢ࣌ࠁ΍σʔλϕʔεૢ࡞ʣΛ·ͱΊͨ΋ͷɻ Ͳ͏࢖͏͔͸܅࣍ୈɻ

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BOTTLEͷΠϯετʔϧ PythonͷwebϑϨʔΫϫʔΫͰ͋ΔbottleΛ࢖͓͏ɻ http://bottlepy.org/docs/dev/tutorial.html $ sudo pip3.6 install bottle pip͸pythonͷެࣜύοέʔδϚωʔδϟ

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ॳΊͯͷαʔό ϗʔϜσΟϨΫτϦʹserverσΟϨΫτϦΛ࡞੒͠ɺͦͷதʹserver.pyΛ࡞੒͠Α͏ɻ # ඞཁͳϞδϡʔϧͷಡΈࠐΈ from bottle import Bottle, run, post, request, redirect # BottleΦϒδΣΫτʢΠϯελϯεʣͷ࡞੒ app = Bottle() @app.route('/') def handle(): return "hello, bottle" run(app, host="your_ip_addr", port=8080)

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ॳΊͯͷαʔό PCͰ΋εϚϗͰ΋͍͍ͷͰwebϒϥ΢βΛ্ཱͪ͛ͯɺURLೖྗόʔ ʹ http://192.168.111.XX:8080/ ͜ΕΛೖྗ͠Α͏ɻ දࣔ͞Ε·͔ͨ͠ʁ

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SERVER.PYͰ༡΅͏ @app.route(‘/‘) def handle(): return "hello, bottle” @ʹଓ͘app.routeΛσίϨʔλؔ਺ͱݴ͍·͢ɻ ‘/‘ͷ෦෼͸ԿΛද͍ͯ͠Δ͔Θ͔Γ·͔͢ʁ ͜͜Λมߋ͢ΔͱͲ͏ͳΔͰ͠ΐ͏ʁ ؔ਺໊Λมߋͯ͠ΈΔͱʁ @app.route()Λ૿΍ͯ͠ΈΔͱɾɾɾʁ

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SERVER.PYͰ༡΅͏ @app.route(‘/‘) def handle(): return "hello, bottle” return͸Ͳ͜ʹԿΛฦ͍ͯ͠ΔͷͩΖ͏͔ʁ ࢼ͠ʹreturn “

hello, bottle

”ͱͯ͠ΈΑ͏ɻ

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HTTP HTTP͸ৗʹϦΫΤετɺϨεϙϯεͷΩϟονϘʔϧɻ ϒϥ΢βʮ͍ͩ͘͞ʯɹʹʼϦΫΤετɹɹɹɹɹɹɹɹαʔό ϒϥ΢βɹɹɹɹɹɹɹʻʹϨεϙϯεʢhtmlϑΝΠϧʣαʔόʮͲ͏ ͧʯ ϦΫΤετͷதͰɺʮԿΛʯʮͲ͏ͯ͠ཉ͍͠ͷ͔ʯΛ఻͑ΔɻʮԿΛʯ ʹ૬౰͢Δ΋ͷ͕URLͰʮͲ͏ͯ͠ཉ͍͠ͷ͔ʯʹ૬౰͢Δͷ͕HTTPϝ ιουɻ

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GETϝιου URLʹσʔλΛؚΊͯαʔόʹϦΫΤετΛૹΔɻ ggΔͷ͸ओʹGETϝιουΛ༻͍͍ͯΔɻ

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POSTϝιου ࢦఆ͞ΕͨURLʹϦΫΤετͱͱ΋ʹɺ σʔλΛαʔό΁ૹ৴͢Δɻ

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QUIZ Q1ɺઌ΄Ͳhello, bottleΛදࣔͤ͞Δͷʹ࢖ͬͨϝιου͸ͳΜͰ ͠ΐ͏ʁ Q2ɺwebͷϑΥʔϜσʔλΛૹ৴͢Δͱ͖ʹ࢖͏ϝιου͸ͳΜͰ ͠ΐ͏ʁ

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HTML࠶ೖ໳ Ͱ࢝·ΓͰऴΘΔɻʻʼͰғ·Ε͍ͯΔ෦෼Λλάͱ ͍͏ɻλάͷछྨʹΑͬͯ໾ׂ͕ܾ·Δ

ͳͲͳͲ

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GETͰϦΫΤετૹΔ GETͰ͸ΫΤϦύϥϝʔλͱ͍͏΋ͷΛ࢖ͬͯɺϦΫΤετσʔλʹ৘ใ ΛՃ͑Δ͜ͱ͕Ͱ͖Δɻ

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GETͰड͚Δ @app.route('/robo') def recvget(): return "{}".format(request.query.get_foo)

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POSTͰϦΫΤετૹΔ

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POSTͰड͚Δ @app.route('/architect', method='POST') def recvpost(): return "{}".format(request.forms.get(‘post_foo’))

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PYTHONͰGPIOϐϯૢ࡞ ͜ͷલγΣϧεΫϦϓτͰGPIOϐϯૢ࡞Λ͠·ͨ͠Ͷʁ ͜ΕΛpythonͷεΫϦϓτͰ΋΍ͬͯΈ·͠ΐ͏ɻ $ sudo pip3.6 install wiringpi

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࢖͍ํ؆୯Ͱ͢ɻ import wiringpi wiringpi.wiringPiSetupGpio() # For GPIO pin numbering wiringpi.pinMode(6, 1) # Set pin 6 to 1 ( OUTPUT ) wiringpi.digitalWrite(6, 1) # Write 1 ( HIGH ) to pin 6 wiringpi.digitalRead(6) # Read pin 6

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LCHIKA.SH࠶དྷ ͜ͷલͷlchika.shͱ·ͬͨ͘ಉ͜͡ͱΛ͠Α͏ɻ import time time.sleep(5) ͰpythonΛ5ඵؒ଴ػͤ͞Δ͜ͱ͕Ͱ͖Δɻ

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ࠓ೔ͷ͓୊ ϒϥ΢βͷϘλϯΛԡͯ͠LEDΛޫΒͤΑʂ

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ࣗ༝ʹ࡞Ζ͏ ONϘλϯɺOFFϘλϯΛ྆ํ࡞Δʁ ͦΕͱ΋ONͱOFFͷ૬ޓ੾Γସ͑Λ͢Δʁ LEDͷON,OFF৘ใ͸POSTͰૹΔʁGETͰૹΔʁ ͲͷURLʹσʔλΛૹΔʁ

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ม਺ͷείʔϓ >>> a = 10 >>> def hoge(): ... a += 1 ... print(a) Traceback (most recent call last): File "", line 1, in File "", line 2, in hoge UnboundLocalError: local variable 'a' referenced before assignment

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GLOBALม਺Λ࢖͏ >>> a = 10 >>> def hoge(): ... global a ... a += 1 ... print(a)

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ࢲ͕࡞ͬͨSERVER.PY https://github.com/teru01/Lchika-Server GitHubͱ͍͏αʔϏεΛ࢖͍ͬͯ·͢ɻ

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͓ർΕ༷Ͱͨ͠ɻ $ sudo poweroff