Asyncio with multiple methods in micropython

When working with asyncio in Micropython, it is common to come across situations where multiple methods need to be executed asynchronously. In this article, we will explore three different ways to solve this problem using Python.

Option 1: Using coroutines

One way to handle multiple methods asynchronously in Micropython is by using coroutines. Coroutines are functions that can be paused and resumed, allowing other tasks to run in the meantime. To implement this solution, we can define each method as a coroutine and use the await keyword to pause the execution until the method completes.

import asyncio

async def method1():
    # Method 1 implementation

async def method2():
    # Method 2 implementation

async def method3():
    # Method 3 implementation

async def main():
    await asyncio.gather(method1(), method2(), method3())

This solution allows the methods to run concurrently, improving the overall performance of the program. However, it requires the use of the asyncio library and may not be suitable for all Micropython environments.

Option 2: Using threads

If the Micropython environment supports threading, another option is to use threads to execute the methods asynchronously. Threads are lightweight processes that can run concurrently, allowing multiple tasks to be executed simultaneously.

import threading

def method1():
    # Method 1 implementation

def method2():
    # Method 2 implementation

def method3():
    # Method 3 implementation

if __name__ == "__main__":
    thread1 = threading.Thread(target=method1)
    thread2 = threading.Thread(target=method2)
    thread3 = threading.Thread(target=method3)



This solution allows the methods to run in parallel, but it may introduce additional complexity due to the need for thread synchronization and potential resource conflicts.

Option 3: Using callbacks

If the Micropython environment does not support coroutines or threads, a third option is to use callbacks to handle the asynchronous execution of the methods. Callbacks are functions that are called when a certain event or condition is met.

def method1(callback):
    # Method 1 implementation

def method2(callback):
    # Method 2 implementation

def method3(callback):
    # Method 3 implementation

def main():
    method1(lambda: method2(lambda: method3(lambda: None)))


This solution allows the methods to be executed sequentially, with each method calling the next one through a callback. While it may not provide the same level of concurrency as the previous options, it can still be a viable solution in certain scenarios.

After evaluating the three options, the best choice depends on the specific requirements and constraints of the Micropython environment. If coroutines are supported, option 1 provides the most efficient and scalable solution. If threading is available, option 2 can offer parallel execution. If neither coroutines nor threading are available, option 3 can still provide a sequential execution approach.

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4 Responses

  1. I personally think Option 2 is the way to go for asyncio in micropython. It just feels right, you know? #TeamThreads

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