The document summarizes the 14th meeting of the Metasepi team focused on ATS programming on microcontrollers (MCUs). It covers topics such as the Metasepi project, the AJHC Haskell compiler, and demos using ATS language on various platforms like Arduino and Mbed. Additionally, it emphasizes the need for Metasepi and its advantages in programming with type safety to reduce runtime errors.

1. Metasepi team meeting #14:
ATS programming on MCU
Metasepi team meeting #14:
ATS programming on MCU
Metasepi team meeting #14:
ATS programming on MCU
Metasepi team meeting #14:
ATS programming on MCU
Metasepi team meeting #14:
ATS programming on MCU
Kiwamu Okabe @ Metasepi ProjectKiwamu Okabe @ Metasepi ProjectKiwamu Okabe @ Metasepi ProjectKiwamu Okabe @ Metasepi ProjectKiwamu Okabe @ Metasepi Project

2. Who am I?Who am I?Who am I?Who am I?Who am I?
☆ http://www.masterq.net/☆ http://www.masterq.net/☆ http://www.masterq.net/☆ http://www.masterq.net/☆ http://www.masterq.net/
☆ Self employed software engineer☆ Self employed software engineer☆ Self employed software engineer☆ Self employed software engineer☆ Self employed software engineer
☆ Trade name := METASEPI DESIGN☆ Trade name := METASEPI DESIGN☆ Trade name := METASEPI DESIGN☆ Trade name := METASEPI DESIGN☆ Trade name := METASEPI DESIGN
☆ Founder of Metasepi Project☆ Founder of Metasepi Project☆ Founder of Metasepi Project☆ Founder of Metasepi Project☆ Founder of Metasepi Project
☆ A Debian Maintainer☆ A Debian Maintainer☆ A Debian Maintainer☆ A Debian Maintainer☆ A Debian Maintainer
☆ 10 years' experience in developing
OS using NetBSD
☆ 10 years' experience in developing
OS using NetBSD
☆ 10 years' experience in developing
OS using NetBSD
☆ 10 years' experience in developing
OS using NetBSD
☆ 10 years' experience in developing
OS using NetBSD

3. Demo: NetBSD driver in HaskellDemo: NetBSD driver in HaskellDemo: NetBSD driver in HaskellDemo: NetBSD driver in HaskellDemo: NetBSD driver in Haskell
☆ NetBSD audio driver play sound☆ NetBSD audio driver play sound☆ NetBSD audio driver play sound☆ NetBSD audio driver play sound☆ NetBSD audio driver play sound
☆ The driver's interrupt handler
rewrited using Haskell
☆ The driver's interrupt handler
rewrited using Haskell
☆ The driver's interrupt handler
rewrited using Haskell
☆ The driver's interrupt handler
rewrited using Haskell
☆ The driver's interrupt handler
rewrited using Haskell
☆ Watch the movie at following☆ Watch the movie at following☆ Watch the movie at following☆ Watch the movie at following☆ Watch the movie at following
https://www.youtube.com/watch?v=XEYcR5RG5cAhttps://www.youtube.com/watch?v=XEYcR5RG5cAhttps://www.youtube.com/watch?v=XEYcR5RG5cAhttps://www.youtube.com/watch?v=XEYcR5RG5cAhttps://www.youtube.com/watch?v=XEYcR5RG5cA
☆ Paper for Haskell Symposium 2014☆ Paper for Haskell Symposium 2014☆ Paper for Haskell Symposium 2014☆ Paper for Haskell Symposium 2014☆ Paper for Haskell Symposium 2014
http://metasepi.org/doc/metasepi-icfp2014.pdfhttp://metasepi.org/doc/metasepi-icfp2014.pdfhttp://metasepi.org/doc/metasepi-icfp2014.pdfhttp://metasepi.org/doc/metasepi-icfp2014.pdfhttp://metasepi.org/doc/metasepi-icfp2014.pdf

4. Ajhc Haskell compilerAjhc Haskell compilerAjhc Haskell compilerAjhc Haskell compilerAjhc Haskell compiler
http://ajhc.metasepi.org/http://ajhc.metasepi.org/http://ajhc.metasepi.org/http://ajhc.metasepi.org/http://ajhc.metasepi.org/
☆ Ajhc := Arafura designed jhc☆ Ajhc := Arafura designed jhc☆ Ajhc := Arafura designed jhc☆ Ajhc := Arafura designed jhc☆ Ajhc := Arafura designed jhc
☆ jhc := John's Haskell Compiler☆ jhc := John's Haskell Compiler☆ jhc := John's Haskell Compiler☆ jhc := John's Haskell Compiler☆ jhc := John's Haskell Compiler
☆ http://repetae.net/computer/jhc/☆ http://repetae.net/computer/jhc/☆ http://repetae.net/computer/jhc/☆ http://repetae.net/computer/jhc/☆ http://repetae.net/computer/jhc/
☆ Jhc outputs binary that has low-
memory-footprint and runs fast.
☆ Jhc outputs binary that has low-
memory-footprint and runs fast.
☆ Jhc outputs binary that has low-
memory-footprint and runs fast.
☆ Jhc outputs binary that has low-
memory-footprint and runs fast.
☆ Jhc outputs binary that has low-
memory-footprint and runs fast.
☆ Good for embedded software.☆ Good for embedded software.☆ Good for embedded software.☆ Good for embedded software.☆ Good for embedded software.

5. AgendaAgendaAgendaAgendaAgenda
☆ [1] What is Ajhc?☆ [1] What is Ajhc?☆ [1] What is Ajhc?☆ [1] What is Ajhc?☆ [1] What is Ajhc?
☆ [2] What is Metasepi?☆ [2] What is Metasepi?☆ [2] What is Metasepi?☆ [2] What is Metasepi?☆ [2] What is Metasepi?
☆ [3] Demo using ATS language☆ [3] Demo using ATS language☆ [3] Demo using ATS language☆ [3] Demo using ATS language☆ [3] Demo using ATS language
☆ [4] What is ATS?☆ [4] What is ATS?☆ [4] What is ATS?☆ [4] What is ATS?☆ [4] What is ATS?
☆ [5] ATS programming on MCU☆ [5] ATS programming on MCU☆ [5] ATS programming on MCU☆ [5] ATS programming on MCU☆ [5] ATS programming on MCU

6. What is Metasepi?What is Metasepi?What is Metasepi?What is Metasepi?What is Metasepi?
http://metasepi.org/http://metasepi.org/http://metasepi.org/http://metasepi.org/http://metasepi.org/
☆ Unix-like OS designed by strong type.☆ Unix-like OS designed by strong type.☆ Unix-like OS designed by strong type.☆ Unix-like OS designed by strong type.☆ Unix-like OS designed by strong type.
☆ Using ML or more strong type lang.☆ Using ML or more strong type lang.☆ Using ML or more strong type lang.☆ Using ML or more strong type lang.☆ Using ML or more strong type lang.

7. Why need Metasepi?Why need Metasepi?Why need Metasepi?Why need Metasepi?Why need Metasepi?
☆ We have already Linux or Windows.☆ We have already Linux or Windows.☆ We have already Linux or Windows.☆ We have already Linux or Windows.☆ We have already Linux or Windows.
☆ But the developers are suffering.☆ But the developers are suffering.☆ But the developers are suffering.☆ But the developers are suffering.☆ But the developers are suffering.
☆ If use the kernel changed by you,☆ If use the kernel changed by you,☆ If use the kernel changed by you,☆ If use the kernel changed by you,☆ If use the kernel changed by you,
☆ you will get many runtime error.☆ you will get many runtime error.☆ you will get many runtime error.☆ you will get many runtime error.☆ you will get many runtime error.
☆ Difficult even to reproduce it.☆ Difficult even to reproduce it.☆ Difficult even to reproduce it.☆ Difficult even to reproduce it.☆ Difficult even to reproduce it.

8. Type safetyType safetyType safetyType safetyType safety
☆ Less runtime errors.☆ Less runtime errors.☆ Less runtime errors.☆ Less runtime errors.☆ Less runtime errors.
☆ "数理科学的バグ撲滅方法論のすすめ"☆ "数理科学的バグ撲滅方法論のすすめ"☆ "数理科学的バグ撲滅方法論のすすめ"☆ "数理科学的バグ撲滅方法論のすすめ"☆ "数理科学的バグ撲滅方法論のすすめ"
http://itpro.nikkeibp.co.jp/article/COLUMN/20060915/248230/http://itpro.nikkeibp.co.jp/article/COLUMN/20060915/248230/http://itpro.nikkeibp.co.jp/article/COLUMN/20060915/248230/http://itpro.nikkeibp.co.jp/article/COLUMN/20060915/248230/http://itpro.nikkeibp.co.jp/article/COLUMN/20060915/248230/

9. How create Metasepi?How create Metasepi?How create Metasepi?How create Metasepi?How create Metasepi?

10. Snatch-driven developmentSnatch-driven developmentSnatch-driven developmentSnatch-driven developmentSnatch-driven development
Dogfooding style.Dogfooding style.Dogfooding style.Dogfooding style.Dogfooding style.

11. Demo: ATS on raw ArduinoDemo: ATS on raw ArduinoDemo: ATS on raw ArduinoDemo: ATS on raw ArduinoDemo: ATS on raw Arduino
https://github.com/fpiot/arduino-mega2560-atshttps://github.com/fpiot/arduino-mega2560-atshttps://github.com/fpiot/arduino-mega2560-atshttps://github.com/fpiot/arduino-mega2560-atshttps://github.com/fpiot/arduino-mega2560-ats

12. Demo: ATS on mbed platformDemo: ATS on mbed platformDemo: ATS on mbed platformDemo: ATS on mbed platformDemo: ATS on mbed platform
https://github.com/fpiot/mbed-atshttps://github.com/fpiot/mbed-atshttps://github.com/fpiot/mbed-atshttps://github.com/fpiot/mbed-atshttps://github.com/fpiot/mbed-ats

13. What is ATS language?What is ATS language?What is ATS language?What is ATS language?What is ATS language?
http://www.ats-lang.org/http://www.ats-lang.org/http://www.ats-lang.org/http://www.ats-lang.org/http://www.ats-lang.org/
☆ Syntax like ML☆ Syntax like ML☆ Syntax like ML☆ Syntax like ML☆ Syntax like ML
☆ Dependent types☆ Dependent types☆ Dependent types☆ Dependent types☆ Dependent types
☆ Linear types☆ Linear types☆ Linear types☆ Linear types☆ Linear types
☆ Without any runtime☆ Without any runtime☆ Without any runtime☆ Without any runtime☆ Without any runtime
☆ Optional GC☆ Optional GC☆ Optional GC☆ Optional GC☆ Optional GC

14. ATS compile flowATS compile flowATS compile flowATS compile flowATS compile flow

15. ATS programming on MCUATS programming on MCUATS programming on MCUATS programming on MCUATS programming on MCU
You can choose the following 2-way.You can choose the following 2-way.You can choose the following 2-way.You can choose the following 2-way.You can choose the following 2-way.
On BareMetal hardwareOn BareMetal hardwareOn BareMetal hardwareOn BareMetal hardwareOn BareMetal hardware
☆ Arduino (8-bit AVR)☆ Arduino (8-bit AVR)☆ Arduino (8-bit AVR)☆ Arduino (8-bit AVR)☆ Arduino (8-bit AVR)
☆ Cortex-M (32-bit ARM)☆ Cortex-M (32-bit ARM)☆ Cortex-M (32-bit ARM)☆ Cortex-M (32-bit ARM)☆ Cortex-M (32-bit ARM)
On RTOSOn RTOSOn RTOSOn RTOSOn RTOS
☆ mbed☆ mbed☆ mbed☆ mbed☆ mbed
☆ ChibiOS/RT☆ ChibiOS/RT☆ ChibiOS/RT☆ ChibiOS/RT☆ ChibiOS/RT

16. ATS on BareMetal hardwareATS on BareMetal hardwareATS on BareMetal hardwareATS on BareMetal hardwareATS on BareMetal hardware
Read/write memory using pointer.Read/write memory using pointer.Read/write memory using pointer.Read/write memory using pointer.Read/write memory using pointer.

17. ATS on RTOSATS on RTOSATS on RTOSATS on RTOSATS on RTOS
Interaction with C.Interaction with C.Interaction with C.Interaction with C.Interaction with C.

18. Produce/Consume Linear TypeProduce/Consume Linear TypeProduce/Consume Linear TypeProduce/Consume Linear TypeProduce/Consume Linear Type

19. At-viewAt-viewAt-viewAt-viewAt-view

20. Japan ATS User GroupJapan ATS User GroupJapan ATS User GroupJapan ATS User GroupJapan ATS User Group
http://jats-ug.metasepi.org/http://jats-ug.metasepi.org/http://jats-ug.metasepi.org/http://jats-ug.metasepi.org/http://jats-ug.metasepi.org/
☆ In a parody of http://jaws-ug.jp/☆ In a parody of http://jaws-ug.jp/☆ In a parody of http://jaws-ug.jp/☆ In a parody of http://jaws-ug.jp/☆ In a parody of http://jaws-ug.jp/
☆ Translate ATS docs into Japanese☆ Translate ATS docs into Japanese☆ Translate ATS docs into Japanese☆ Translate ATS docs into Japanese☆ Translate ATS docs into Japanese
☆ Push the Facebook like button, now!☆ Push the Facebook like button, now!☆ Push the Facebook like button, now!☆ Push the Facebook like button, now!☆ Push the Facebook like button, now!

21. Many translated documentsMany translated documentsMany translated documentsMany translated documentsMany translated documents
* ATSプログラミング入門
http://jats-ug.metasepi.org/doc/ATS2/INT2PROGINATS/index.html
* ATSプログラミングチュートリアル
http://jats-ug.metasepi.org/doc/ATS2/ATS2TUTORIAL/index.html
* Effective ATS
https://github.com/jats-ug/translate/blob/master/Manual/
EffectiveATS.md
* MLプログラマ向けATS言語ガイド
https://github.com/jats-ug/translate/blob/master/Web/
cs.likai.org/ats/ml-programmers-guide-to-ats.md
* 安全なプログラミング言語を使って heartbleed を防ぐには
https://github.com/jats-ug/translate/blob/master/Web/
bluishcoder.co.nz/2014/04/11/preventing-heartbleed-bugs-with-safe-
languages.md
* 状態を持つ観 (view) を通じてポインタを扱う安全なプログラミング
https://github.com/jats-ug/translate/blob/master/Paper/SPPSV-
padl05/SPPSV-padl05.md
* ATSプログラミング入門
http://jats-ug.metasepi.org/doc/ATS2/INT2PROGINATS/index.html
* ATSプログラミングチュートリアル
http://jats-ug.metasepi.org/doc/ATS2/ATS2TUTORIAL/index.html
* Effective ATS
https://github.com/jats-ug/translate/blob/master/Manual/
EffectiveATS.md
* MLプログラマ向けATS言語ガイド
https://github.com/jats-ug/translate/blob/master/Web/
cs.likai.org/ats/ml-programmers-guide-to-ats.md
* 安全なプログラミング言語を使って heartbleed を防ぐには
https://github.com/jats-ug/translate/blob/master/Web/
bluishcoder.co.nz/2014/04/11/preventing-heartbleed-bugs-with-safe-
languages.md
* 状態を持つ観 (view) を通じてポインタを扱う安全なプログラミング
https://github.com/jats-ug/translate/blob/master/Paper/SPPSV-
padl05/SPPSV-padl05.md
* ATSプログラミング入門
http://jats-ug.metasepi.org/doc/ATS2/INT2PROGINATS/index.html
* ATSプログラミングチュートリアル
http://jats-ug.metasepi.org/doc/ATS2/ATS2TUTORIAL/index.html
* Effective ATS
https://github.com/jats-ug/translate/blob/master/Manual/
EffectiveATS.md
* MLプログラマ向けATS言語ガイド
https://github.com/jats-ug/translate/blob/master/Web/
cs.likai.org/ats/ml-programmers-guide-to-ats.md
* 安全なプログラミング言語を使って heartbleed を防ぐには
https://github.com/jats-ug/translate/blob/master/Web/
bluishcoder.co.nz/2014/04/11/preventing-heartbleed-bugs-with-safe-
languages.md
* 状態を持つ観 (view) を通じてポインタを扱う安全なプログラミング
https://github.com/jats-ug/translate/blob/master/Paper/SPPSV-
padl05/SPPSV-padl05.md
* ATSプログラミング入門
http://jats-ug.metasepi.org/doc/ATS2/INT2PROGINATS/index.html
* ATSプログラミングチュートリアル
http://jats-ug.metasepi.org/doc/ATS2/ATS2TUTORIAL/index.html
* Effective ATS
https://github.com/jats-ug/translate/blob/master/Manual/
EffectiveATS.md
* MLプログラマ向けATS言語ガイド
https://github.com/jats-ug/translate/blob/master/Web/
cs.likai.org/ats/ml-programmers-guide-to-ats.md
* 安全なプログラミング言語を使って heartbleed を防ぐには
https://github.com/jats-ug/translate/blob/master/Web/
bluishcoder.co.nz/2014/04/11/preventing-heartbleed-bugs-with-safe-
languages.md
* 状態を持つ観 (view) を通じてポインタを扱う安全なプログラミング
https://github.com/jats-ug/translate/blob/master/Paper/SPPSV-
padl05/SPPSV-padl05.md
* ATSプログラミング入門
http://jats-ug.metasepi.org/doc/ATS2/INT2PROGINATS/index.html
* ATSプログラミングチュートリアル
http://jats-ug.metasepi.org/doc/ATS2/ATS2TUTORIAL/index.html
* Effective ATS
https://github.com/jats-ug/translate/blob/master/Manual/
EffectiveATS.md
* MLプログラマ向けATS言語ガイド
https://github.com/jats-ug/translate/blob/master/Web/
cs.likai.org/ats/ml-programmers-guide-to-ats.md
* 安全なプログラミング言語を使って heartbleed を防ぐには
https://github.com/jats-ug/translate/blob/master/Web/
bluishcoder.co.nz/2014/04/11/preventing-heartbleed-bugs-with-safe-
languages.md
* 状態を持つ観 (view) を通じてポインタを扱う安全なプログラミング
https://github.com/jats-ug/translate/blob/master/Paper/SPPSV-
padl05/SPPSV-padl05.md

22. Follow me!Follow me!Follow me!Follow me!Follow me!
https://twitter.com/jats_ughttps://twitter.com/jats_ughttps://twitter.com/jats_ughttps://twitter.com/jats_ughttps://twitter.com/jats_ug