2021 - RubyKaigi - It is time to build your mruby VM on the microcontroller?

In 2020, I find a mini-arcade maker product that uses ESP8622 and MicroPython. Since I know the mruby/c can run on the ESP32 but it doesn't support running on the ESP8622. Is it possible to implement our own mruby VM and execute Ruby on any microcontroller we want to use it? This talk will show my progress to run a simple mruby script on the ESP8622 by implementing my own small mruby VM.

Transcript

1. It is time to build your mruby VM on the microcontroller? Photo by Johannes Plenio from Pexels
2. THE ENGINEER OF CREATIVE ૵ ࣌ ݭ໵ @elct9620
5. Does build a mruby VM is hard Question
6. Yes, but we can do it easier My Answer
7. This is my fi rst time trying it, how can I start it? Question
8. mruby-L1VM
9. A mruby VM running on the Web only ~1000 lines mruby-L1VM
10. Everyone can read it without spending a lot of time mruby-L1VM
11. How does it work? mruby-L1VM
12. Start Program End Program Read Byte Code Execute Exit? No Yes IREP OPCODE
14. How to read the IREP from mrb binary? IREP
18. example.mrb RITE Header IREP Debug Section
19. example.mrb RITE Header IREP Debug Section 34 bytes
21. example.mrb RITE Header IREP Debug Section IREP Header
23. IREP ISEQ Pools Symbols Sub-IREP OPCODE
27. Sample Code
28. IREP ISEQ Pools Symbols Sub-IREP Ex. String
30. How does the "method" work in mruby? Call Method
31. IREP ISEQ Pools Symbols Sub-IREP Method Name
32. IREP ISEQ Pools Symbols Sub-IREP Method Body
34. Pointer
38. Sample Code
41. Run your VM on the microcontroller Demo
43. Prototype Code Series Article (Chinese)
44. I am trying to build my own plant keeper IoT device The Next
45. Thanks