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Keyboard Firmware in Rust
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KOBA789
July 03, 2019
Technology
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Keyboard Firmware in Rust
https://rust.connpass.com/event/133657/
KOBA789
July 03, 2019
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Transcript
ࣗ࡞ΩʔϘʔυͷ ϑΝʔϜΣΞΛ 3VTUͰॻ͘ KOBA789
,0#" w ΫοΫύουגࣜձٕࣾज़෦σʔλج൫άϧʔϓ w ϝΠϯͷࣄେྔͷσʔλΛ͍͍ײ͡ʹ͢Δ͜ͱ ͱ͍͏͜ͱʹͳ͍ͬͯΔ w ࣮ࡍ͓͠Ζͦ͏ͳ͜ͱΛͳΜͰ͍ͬͯΔ w
ݱࡏ৽ଔ
ࣗ࡞ΩʔϘʔυ
None
࠷ۙ<͍ͭ >ਓؾͳझຯ<ཁग़య>
https://techlife.cookpad.com/entry/2018/08/14/172130
ฐࣾʹͨ͘͞ΜͷѪՈ͕
Ͱɺ
https://internship.cookpad.com/2019/spring/
Πϯλʔϯγοϓ ࣗ࡞ΩʔϘʔυίʔε
None
څྉΒͬͯࣗ࡞ΩʔϘʔυΛ Δ͜ͱʹͳͬͯ͠·ͬͨ
͑Β͍ਓʮόζΒ͍ͤͨʯ Զʮ͡Ό͋ΧϦΩϡϥϜաܹʹʯ
݁Ռ
wΜ͚ͩͪΖΜΔ w؆୯ͳిࢠճ࿏Δ wϓϦϯτج൘ͷઃܭΔ wϑΝʔϜΣΞ3VTUͰॻ͘
ϑΝʔϜΣΞ 3VTUͰॻ͘
1SP.JDSP https://www.switch-science.com/catalog/1623/ ࣗ࡞ΩʔϘʔυͰҰൠత
1SP.JDSPͷੴ"5NFHB6 "5NFHB6"73
3VTUͰ"73ͩΔ͍
ΈࠐΈ3VTU͓͢͢Ί $PSUFY.γϦʔζ "3. 3*4$7͡Όͳͯ͘͝ΊΜͳ
௨শCMVFQJMM w 45.'$͕ͬͯΔ w 45.'$$PSUFY. w 3".,# w $16$MPDLVQUP.)[ w
'MBTI,# ࣮ࡍͳ͔ͥ,# https://wiki.stm32duino.com/index.php?title=File:STM32_Blue_Pill_perspective.jpg
௨শCMVFQJMM ͓͍͘Βͩͱࢥ͍·͔͢ https://wiki.stm32duino.com/index.php?title=File:STM32_Blue_Pill_perspective.jpg
௨শCMVFQJMM https://wiki.stm32duino.com/index.php?title=File:STM32_Blue_Pill_perspective.jpg
։ൃͷͨΊͷπʔϧ
͍͍ͩͨ 5IF&NCFEEFE3VTU#PPL ʹॻ͍ͯ͋ΔͷͰলུ
ͱ͘ʹศརͳͷΛհ
#MBDL.BHJD1SPCF w 1SPHSBNNFS%FCVHHFS w ιϑτΣΞΦʔϓϯιʔε w ϋʔυΣΞCMVFQJMMͳͲ͕͑Δ w ࢲCMBDLQJMMΛͬͯ࡞ͬͨ w
ϑϦεΫέʔεͰ͍͍ײ͡
None
cargo runͰ͖Δ ຊೋ Demo
HEC͑Δ ϒϨʔΫϙΠϯτషΕΔ ϝϞϦμϯϓͰ͖Δ
println!Ͱ͖Δ Demo
cortex_m_semihosting
ΈࠐΈϓϩάϥϛϯάͰ ආ͚ΒΕͳ͍ͷ
पลػثϖϦϑΣϥϧ
ϖϦϑΣϥϧͷػೳݺͼग़͠ ϨδελΞΫηε
ΞηϯϒϦ /P
JO$ ϝʔΧʔ͕ϥΠϒϥϦΛఏڙ JO3VTU ศརΫϨʔτ͕͋Δ
TWESVTU wΈΜͳ͍͖ͩ͢ίʔυδΣωϨʔλ wσόΠεఆٛϑΝΠϧTWE͔Β wϨδελΞΫηεؔͷίʔυΛు͘
TUNG wTWESVTUͰు͔ΕͨίʔυΛ w͍͍ײ͡ʹௐͨ͠ΫϨʔτ wTUNGͰ͑Δ
-νΧͱ͔Ͱ͖Δ
None
͔͠͠ɺ
ΩʔϘʔυͳͷͰ 64#)*%Λ ͠ΌΒͳ͍ͱ͍͚ͳ͍
ϨδελΛݸୟ͘͘Β͍Ͱ 64#͠ΌΕͳ͍
ް͍64#ͷ༷ॻͱ ް͍64#)*%ͷ༷ॻͱ Ϋιް͍45.ͷ༷ॻΛಡΜͰ దͳϨδελɾϝϞϦΛ ͨ͘͞ΜಡΈॻ͖͢ΔίʔυΛॻ͘ඞཁΞϦ
࣮͠·ͨ͠
64#)*%࣮Γ͔ͨ w 64#ͷ༷ΛಡΉ w 64#)*%$MBTTͷ༷ΛಡΉ w 45.'ͷϚχϡΞϧΛಡΉ w ͕ۭ݀͘΄ͲಡΉ w
MJCPQFODNͷίʔυΛࢀߟʹ͢Δ w 3VTUͰॻ͘ˠϩδΞφͰݟΔˠ͢ w ҎԼ܁Γฦ͠
ԶӦۀ͘Β͍͔͔ͬͨ
͜͜ͰϩδΞφ Demo
3VTUؔͳ͍ؾ͕͢Δͳ
ίʔυยΛͪΐͬͱհ
64#ͷ௨৴Ͱ͏όοϑΝ
https://www.stmcu.jp/design/document/reference_manual/51428/ IUUQTXXXTUNDVKQEFTJHOEPDVNFOUSFGFSFODF@NBOVBM
͜ΕΛ͍͍ײ͡ʹϞσϦϯά
None
VolatileCell
VolatileCell w ϝϞϦͷWPMBUJMFΞΫηεΛ w ͍͍ײ͡ʹ͢ΔϥΠϒϥϦ w std::ptr::read_volatileͱ͔unsafeͰࠔΔ
MJCPQFODNΛ ࢀߟʹ͕ͨ͠ʜʜ
3VTUಛ༗ͷ͠͞ w ϓϩτίϧͷ࣮εςʔτϚγϯʹͳΓ͕ͪ w εςʔτΛܕ҆શʹ͢Δͷͪΐͬͱίπ͕͍Δ w งғؾͰߏ࡞Δͱ్தͰ٧Ή w ݩͷ࣮ΛಡΜͰ $ͷࡶ͞ʹΩϨΔ
None
None
͠Γ͖ΕͱΜ΅