Raspberry pi講習会 3回目

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1. RASPBERRY PIߨशձ PART3: IOT WITH RASPBERRY PI 2018೥ౙɹখ໺ً໵
2. લճͷ෮शQUIZ Q1ɹγΣϧͷओͳ໾ׂ͸Կʁ Q2ɹCUIʹΑΔίϚϯυૢ࡞͸{1.Ϋιɹ2.ਆ}Ͱ͋Δɻ Q3ɹaptͬͯԿʁ Q4ɹLinuxγεςϜͷ؅ཧऀϢʔβ͸Կʁ
3. 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))
4. ࠓճͷ໨ඪ webαʔόʔΛཱͯΔʂ ϒϥ΢β͔ΒLEDΛ఺౮ʂ ͍·όζͬͯΔIoTͱ͍͏΍ͭͰ͢ɻ
5. αʔόɾΫϥΠΞϯτߏ੒ αʔόଆͷίϯϐϡʔλͱΫϥΠΞϯτଆͷ ίϯϐϡʔλʹ෼͚ͯͦΕͧΕͷ໾໨Λ ੾Γ཭͢ɻ
6. ϦΫΤετΛ޷͖ͳλΠϛϯάͰૹΓ ϨεϙϯεΛ΋Β͏ɻ ྫʣϒϥ΢β ΫϥΠΞϯτ
7. αʔό ϦΫΤετʹରͯ͠ϨεϙϯεΛฦ͢ɻ ϦΫΤετΛ͡ʔʔͬͱ଴ͭɻ webαʔόɺFTPαʔόɺDNSαʔόͳͲ
8. ࠓɺͲ͜ʹ͍Δʁ αʔόɾΫϥΠΞϯτߏ੒ͰϓϩάϥϜΛॻ͘ͱ͖͸ɺ ࣗ෼͕ࠓͲͪΒଆΛ࡞͍ͬͯΔͷ͔ҙࣝ͠Α͏ɻ
9. webαʔό ɹ HTTPϓϩτίϧʹج͍ͮͯσʔλͷ΍Γ औΓΛ͢Δαʔόͷ͜ͱ
10. HTTPϓϩτίϧ hypertext transfer protocol ϋΠύʔͳςΩετΛτϥϯεϑΝʔ͢Δͨ Ίͷϓϩτίϧɻ
11. ௨৴ϓϩτίϧ ௨৴Λߦ͏ͨΊʹඞཁͳऔΓܾΊ έʔϒϧͷίωΫλͷܗঢ়͸ʁ σʔλͷઌ಄10όΠτ͸ԿΛද͢ʁɹͳͲͳͲ SSHͱHTTPͰ͸࣮ݱ͍ͨ͜͠ͱ͕ҟͳΔͨΊҟͳΔϓϩτίϧ͕༻͍ΒΕΔ
12. ϋΠύʔςΩετ ͨͩͷจࣈ͚ͩͰͳ͘ɺਤɺදɺͳͲΛදݱͰ ͖ɺϦϯΫʹΑͬͯผͷςΩετΛࢀরͰ͖Δ Α͏ʹͳ͍ͬͯΔςΩετϑΝΠϧͷ͜ͱ
13. HTML hypertext markup languageɹ ϋΠύʔͳςΩετͷ୅ද֨ɻ
14. webϑϨʔϜϫʔΫ webΞϓϦέʔγϣϯΛ࡞Δࡍʹେ఍ඞཁͱͳΔػೳΛ͋ Β͔͡Ί·ͱΊͨ΋ͷɻ ͲΜͳϑΝΠϧΛͲ͜ʹ഑ஔ͢Δ͔͕ఆΊΒΕ͓ͯΓɺͦ ͷܾ·ΓʹԊͬͯϓϩάϥϜΛॻ͘
15. ϥΠϒϥϦ Α͘࢖͏ػೳʢ࣌ࠁ΍σʔλϕʔεૢ࡞ʣΛ·ͱΊͨ΋ͷɻ Ͳ͏࢖͏͔͸܅࣍ୈɻ
16. BOTTLEͷΠϯετʔϧ PythonͷwebϑϨʔΫϫʔΫͰ͋ΔbottleΛ࢖͓͏ɻ http://bottlepy.org/docs/dev/tutorial.html $ sudo pip3.6 install bottle pip͸pythonͷެࣜύοέʔδϚωʔδϟ
17. 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)
18. ॳΊͯͷαʔό PCͰ΋εϚϗͰ΋͍͍ͷͰwebϒϥ΢βΛ্ཱͪ͛ͯɺURLೖྗόʔ ʹ http://192.168.111.XX:8080/ ͜ΕΛೖྗ͠Α͏ɻ දࣔ͞Ε·͔ͨ͠ʁ
19. SERVER.PYͰ༡΅͏ @app.route(‘/‘) def handle(): return "hello, bottle” @ʹଓ͘app.routeΛσίϨʔλؔ਺ͱݴ͍·͢ɻ ‘/‘ͷ෦෼͸ԿΛද͍ͯ͠Δ͔Θ͔Γ·͔͢ʁ ͜͜Λมߋ͢ΔͱͲ͏ͳΔͰ͠ΐ͏ʁ ؔ਺໊Λมߋͯ͠ΈΔͱʁ @app.route()Λ૿΍ͯ͠ΈΔͱɾɾɾʁ
20. SERVER.PYͰ༡΅͏ @app.route(‘/‘) def handle(): return "hello, bottle” return͸Ͳ͜ʹԿΛฦ͍ͯ͠ΔͷͩΖ͏͔ʁ ࢼ͠ʹreturn “<h1>hello, bottle</h1>”ͱͯ͠ΈΑ͏ɻ
21. HTTP HTTP͸ৗʹϦΫΤετɺϨεϙϯεͷΩϟονϘʔϧɻ ϒϥ΢βʮ͍ͩ͘͞ʯɹʹʼϦΫΤετɹɹɹɹɹɹɹɹαʔό ϒϥ΢βɹɹɹɹɹɹɹʻʹϨεϙϯεʢhtmlϑΝΠϧʣαʔόʮͲ͏ ͧʯ ϦΫΤετͷதͰɺʮԿΛʯʮͲ͏ͯ͠ཉ͍͠ͷ͔ʯΛ఻͑ΔɻʮԿΛʯ ʹ૬౰͢Δ΋ͷ͕URLͰʮͲ͏ͯ͠ཉ͍͠ͷ͔ʯʹ૬౰͢Δͷ͕HTTPϝ ιουɻ
22. GETϝιου URLʹσʔλΛؚΊͯαʔόʹϦΫΤετΛૹΔɻ ggΔͷ͸ओʹGETϝιουΛ༻͍͍ͯΔɻ
23. POSTϝιου ࢦఆ͞ΕͨURLʹϦΫΤετͱͱ΋ʹɺ σʔλΛαʔό΁ૹ৴͢Δɻ
24. QUIZ Q1ɺઌ΄Ͳhello, bottleΛදࣔͤ͞Δͷʹ࢖ͬͨϝιου͸ͳΜͰ ͠ΐ͏ʁ Q2ɺwebͷϑΥʔϜσʔλΛૹ৴͢Δͱ͖ʹ࢖͏ϝιου͸ͳΜͰ ͠ΐ͏ʁ
25. HTML࠶ೖ໳ <hoge>Ͱ࢝·Γ</hoge>ͰऴΘΔɻʻʼͰғ·Ε͍ͯΔ෦෼Λλάͱ ͍͏ɻλάͷछྨʹΑͬͯ໾ׂ͕ܾ·Δ <h1> <table> <form> <input> <script> ͳͲͳͲ
26. GETͰϦΫΤετૹΔ GETͰ͸ΫΤϦύϥϝʔλͱ͍͏΋ͷΛ࢖ͬͯɺϦΫΤετσʔλʹ৘ใ ΛՃ͑Δ͜ͱ͕Ͱ͖Δɻ <form action="/robo" method="GET"> <input name=“get_foo” value="roboaki" type="hidden" /> <input value="send" type=“submit" /> </form>
27. GETͰड͚Δ @app.route('/robo') def recvget(): return "{}".format(request.query.get_foo)
28. POSTͰϦΫΤετૹΔ <form action="/architect" method="POST"> <input name=“post_foo” type="text" /> <input value="osunayo!?zettaiosunayo!?" type=“submit" /> </form>
29. POSTͰड͚Δ @app.route('/architect', method='POST') def recvpost(): return "{}".format(request.forms.get(‘post_foo’))
30. PYTHONͰGPIOϐϯૢ࡞ ͜ͷલγΣϧεΫϦϓτͰGPIOϐϯૢ࡞Λ͠·ͨ͠Ͷʁ ͜ΕΛpythonͷεΫϦϓτͰ΋΍ͬͯΈ·͠ΐ͏ɻ $ sudo pip3.6 install wiringpi
31. ࢖͍ํ؆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
32. LCHIKA.SH࠶དྷ ͜ͷલͷlchika.shͱ·ͬͨ͘ಉ͜͡ͱΛ͠Α͏ɻ import time time.sleep(5) ͰpythonΛ5ඵؒ଴ػͤ͞Δ͜ͱ͕Ͱ͖Δɻ
33. ࠓ೔ͷ͓୊ ϒϥ΢βͷϘλϯΛԡͯ͠LEDΛޫΒͤΑʂ
34. ࣗ༝ʹ࡞Ζ͏ ONϘλϯɺOFFϘλϯΛ྆ํ࡞Δʁ ͦΕͱ΋ONͱOFFͷ૬ޓ੾Γସ͑Λ͢Δʁ LEDͷON,OFF৘ใ͸POSTͰૹΔʁGETͰૹΔʁ ͲͷURLʹσʔλΛૹΔʁ
35. ม਺ͷείʔϓ >>> a = 10 >>> def hoge(): ... a += 1 ... print(a) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "<stdin>", line 2, in hoge UnboundLocalError: local variable 'a' referenced before assignment
36. GLOBALม਺Λ࢖͏ >>> a = 10 >>> def hoge(): ... global a ... a += 1 ... print(a)
37. ࢲ͕࡞ͬͨSERVER.PY https://github.com/teru01/Lchika-Server GitHubͱ͍͏αʔϏεΛ࢖͍ͬͯ·͢ɻ
38. ͓ർΕ༷Ͱͨ͠ɻ $ sudo poweroff