Cooperative Multitasking. A web-based article on a technique to implement CMT on tiny microcontrollers.

Part 1 describes the building blocks; part 2 has embellishments and methods to keep your code clean.

Pat Beirne 48c0c118ab added the README.md 2 minggu lalu
build a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
CooperativeMultitasking.md a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
README.md 48c0c118ab added the README.md 2 minggu lalu
beer_vat.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
beer_vat.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
blb.jpg a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
dispatch1.jpg a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
dispatch2.jpg a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
door.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
door.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
door2.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
door2.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
fridge_state.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
fridge_state.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
led_state.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
led_state.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
led_state_simple.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
led_state_simple.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
makefile a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
postMessage.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
radio_tuner.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
radio_tuner.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state_2.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state_2.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state_3.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state_3.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state_4.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state_4.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state_5.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
rtb_state_5.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
sendMessage.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
vending.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
vending.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
window_complex.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
window_complex.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
window_state.dot a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu
window_state.png a842113249 Major release, lots of graphics, the text flows better now 2 minggu lalu

README.md

This is a web-based article describing cooperative multitasking, also known as event driven programming. The method described here is small enough to fit on many sub-$1 microcontrollers, those without memory management units. Examples are the STM32, STM8, PY32, AtMega, AtTiny, 8051 and Pic microcontrollers.

With this code structure in place, these tiny microcontrollers can be made to perform multiple separate tasks, apparantly independent from each other.

The reader is walked through the elements of the build, and is then given a fully-implemented block of code. The 2nd half of the article builds on the basis, with lots of examples of state-machines and modifications to allow for cleaner code.

The audience for this article is anyone interested in writing code for small micro-controllers. A background in any programming language would help (C, Rust, Python).