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メーカー製 SDK は不要!標準フレームワークだけで作るサーマルプリンターの印刷アプリ
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Mitsuharu Emoto
October 24, 2024
Programming
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メーカー製 SDK は不要!標準フレームワークだけで作るサーマルプリンターの印刷アプリ
YUMEMI.grow Mobile #17 - connpass
https://yumemi.connpass.com/event/331368/
Mitsuharu Emoto
October 24, 2024
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Transcript
ϝʔΧʔ4%,ෆཁʂ ඪ४ϑϨʔϜϫʔΫ͚ͩͰ࡞Δ αʔϚϧϓϦϯλʔͷҹΞϓϦ ߐຊޫ :6.&.*HSPX.PCJMF  1
ࣗݾհ w ͑ͱΈͭΔ w גࣜձࣾΏΊΈJ04ςοΫϦʔυ w ࠷ۙɺ+BWB4DSJQUZBNMΛॻ͘͜ͱ͕ଟ͍ w ࠓൃച͞ΕͨϩϚαΨ̎ͷϦϝΠΫ࡞ָ͕͠ΈͰ͢ 2
αʔϚϧϓϦϯλʔ w ίϯϏχͷϨδͳͲͰड͚औΔϨγʔτʢײ ࢴʣΛҹ͢ΔϓϦϯλʔͰ͢ w ͜ͷαʔϚϧϓϦϯλʔΛͬͯҹ͢ΔϞ όΠϧΞϓϦͷ࡞ΓํΛ؆୯ʹհ͠·͢ w ࠓճͷରJ04ΞϓϦͰ͕͢ɺ"OESPJE ͳͲଞϓϥοτϑΥʔϜͰ׆༻Ͱ͖·͢
ࢲͷαʔϚϧϓϦϯλʔ 3
֎෦ஔͱ࿈ܞ͢ΔΞϓϦ w ҰൠతʹɺϝʔΧʔ͕ఏڙ͢Δ4%,ΛΞϓϦʹΈࠐΜͰ։ൃ͢Δ w ࢲ͕ॴ༗͢ΔαʔϚϧϓϦϯλʔʹϝʔΧʔ4%,ଘࡏ͢Δ͕ɺ෦ι ϑτΣΞͷόʔδϣϯ͕ඞਢཁ݅ʹຬͨͯ͠ͳ͘ɺར༻Ͱ͖ͳ͍ w ਖ਼نͱ͍͑Ͳۀ͚ϋʔυΣΞͳͷͰɺاۀؒͷܖͳͲ w ϝʔΧʔ͕ఆ͢Δຊདྷͷ͍ํ͔Β֎ΕΔʢۀͷݸਓར༻ʣ
w ͯ͞ɺͲ͏͢Δ͔ʁ 4
Ϩγʔτ͚ҹهड़ݴޠ w ϓϦϯλʔʹରͯ͠ɺҹΛࢦࣔ͢Δϖʔδهड़ݴޠ͕͋Γ·͢ w ༗໊ͳͷͩͱɺΞυϏͷ1PTU4DSJQU͕͋Γ·͢ w 104͚αʔϚϧϓϦϯλʔΛ੍ޚ͢Δݴޠ&4$104͕͋Δ w ͜ͷ&4$104ͷίϚϯυΛαʔϚϧϓϦϯλʔʹૹΕ͍͍ w
ଟ͘ͷ4%,ͷҹॲཧ&4$104ίϚϯυΛૹ৴͍ͯ͠Δ 5
੍ޚϑϩʔͷΠϝʔδਤ 📱ᶃ͜ͷίϚϯυͰҹͯ͠ ᶄྃղ͠·ͨ͠ w ഁઢ෦ͷ௨৴ɺؒΛ༗ઢແઢͰଓͯ͠ߦ͍·͢ w ࢲར༻͍͢͠#MVFUPPUIΛ࠾༻ͯ͠·͢ w Ұൠతͳ$PSF#MVFUPPUIΛ༻੍͍ͨޚͳͷͰɺ࣮આ໌লུ͠·͢ 🧾
ᶅҹ 6
&4$104ͷ؆୯ͳઆ໌ w &4$104ͷਖ਼ମʢʁʣɺਐͷόΠτྻͰ͢ w ͨͱ͑ɺ࣍ͷΑ͏ͳίϚϯυΛΈ߹ΘͤͯɺҹύλʔϯΛ࡞Γ·͢ 7
ͨͱ͑ w ଠจࣈͷʮ)FMMP8PSMEʯΛҹ͍ͨ͠ w αʔϚϧϓϦϯλʔʢϖϦϑΣϥϧʣʹରͯ͠ɺҎԼͷίϚϯυΛॻ͖ࠐΉ w ͳ͓ɺ#MVFUPPUIͷॻ͖ࠐΈσʔλʹ্ݶ͕͋ΔͷͰɺదʹׂ͢Δ 1b 40 //
ॳظԽ 1b 45 01 // ଠࣈΦϯ 48 65 6c 6c 6f 20 57 6f 72 6c 64 // Hello World ͷ ASCII ίʔυ 0a // վߦ 8
ಈ࡞σϞ 9 IUUQTXXXZPVUVCFDPNXBUDI WH7F)8F6
αʔϚϧϓϦϯλʔͷ੍ޚ w αʔϚϧϓϦϯλʔͷҹ੍ޚͱฉ͘ͱɺ͍͠ҹΛ࣋ͨΕΔ͔͠Ε ·ͤΜ͕ɺ࣮ਐͷόΠτྻΛૹ৴͢Δ͚ͩͱγϯϓϧͳॲཧͰ͢ w 4%,ෆཁͰҹͰ͖ΔͷͰɺͦ͜ΒͷࢢൢͰ༡·͢ʢཁ֬ೝʣ w ͨͩ͠ɺը૾ͷΑ͏ͳσʔλ͕ଟ͍߹ɺίϚϯυ࡞ʹͪΐͬͱҰख ͕ؒཁΓ·͢ w
࣮ࡍͷ٬தϨδͰϨγʔτҹϓϩηε͕٧·ΔͱେมͰ͢ΑͶ 10
ͬͱৄ͘͠Γ͍ͨํ w དྷ݄݄ʹ։࠵͞ΕΔٕज़ॻయͰʮαʔϚ ϧϓϦϯλʔ੍ޚΞϓϦͷ։ൃೖʯΛग़൛ ͠·͢ w ͷାαϯγϟΠϯγςΟͷΦϑϥΠ ϯձʹϒʔεʢ͞ʣͰग़ల͠·͢ w ͥͻखʹऔͬͯɺ֬ೝͯ͠Έ͍ͯͩ͘͞
w Ҏ্ɺએͰͨ͠ 11
·ͱΊ w αʔϚϧϓϦϯλʔ4%,ͳͯ͘ɺҹΞϓϦ࡞Ε·͢ w Ϩγʔτཧ݊ɺΞΠσΟΞ࣍ୈͰ৭ʑ࡞ΕΔͷͰɺ։ൃର͍ w ࢲϨγʔτܕͷ໊ΧʔυɺΠϕϯτ༻ͷμϯϩʔυΧʔυʢઆ໌ จʴ23ίʔυʣΛ࡞Γ·ͨ͠ w ݱͰҹ͍ͨ͠ʂͱࢥͬͨ͜ͱ͕͋Δํͥͻࢼͯ͠Έ͍ͯͩ͘͞
12