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 6ffc8722fa edit prose, fixups преди 3 седмици
build f83c0bc355 changed all timers to count-down, prose cleanup преди 1 месец
CooperativeMultitasking.md 6ffc8722fa edit prose, fixups преди 3 седмици
README.md e01c1b971a remove .html file and move the main link out of gogs...into nginx преди 1 месец
beer_vat.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
beer_vat.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
blb.jpg 524ef93dc0 Add link in the README, add photo of the button/light board. преди 1 месец
c.xml f3ad6ca5d3 changed uint8 to uchar (it looks nicer) and cleaned up postMessage/sendMessage преди 4 седмици
dispatch1.jpg a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
dispatch2.jpg a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
door.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
door.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
door2.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
door2.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
fridge_state.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
fridge_state.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
led_state.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
led_state.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
led_state_simple.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
led_state_simple.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
makefile 0ede4e93ad introduce init.md, grammer fixes, center author, temp-control state machine преди 3 седмици
pandoc.css 0ede4e93ad introduce init.md, grammer fixes, center author, temp-control state machine преди 3 седмици
postMessage.png f3ad6ca5d3 changed uint8 to uchar (it looks nicer) and cleaned up postMessage/sendMessage преди 4 седмици
radio_tuner.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
radio_tuner.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state_2.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state_2.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state_3.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state_3.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state_4.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state_4.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state_5.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
rtb_state_5.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
sendMessage.png f3ad6ca5d3 changed uint8 to uchar (it looks nicer) and cleaned up postMessage/sendMessage преди 4 седмици
uart.md 2cd4f9d523 fixup in uart.md (clean code, erase comments, grammar) преди 3 седмици
up_down.dot ca8b4d46e1 add up_down.dot преди 3 седмици
vending.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
vending.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
window_complex.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
window_complex.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
window_state.dot a842113249 Major release, lots of graphics, the text flows better now преди 1 месец
window_state.png a842113249 Major release, lots of graphics, the text flows better now преди 1 месец

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).