Using interrupts in STM8

In this session, we’re picking up right where we left off in the last project, so get ready to dive deeper! Our focus is all about mastering how to configure interrupts on the STM8 microcontroller.
We’ll really highlight the importance of the PC3 pin when it comes to handling external interrupts.
Plus, you’ll get some hands-on knowledge on how to set everything up in the makefile to make sure your system runs like a dream.
This introduction is just the beginning, paving the way for some exciting technical topics that are coming up next!.

So, let’s dive into the PC3 pin, which is known for being an interrupt-capable digital input pin—super important for dealing with external interrupts! Now, don’t forget to check if PC3 can handle floating, WPU, plug, and external interrupt features; it’s a must! Also, when you’re coding, keep in mind that PC3 has an interrupt number of 5, and that’s key for your programming needs.
Plus, remember that in the interrupt system, port C is linked to number 5.
Lastly, make sure to grab the file STM8S-XTI from the libraries folder since it’s crucial for managing those external interrupts, helping everything run smoothly..

Getting your Makefile ready is super important, especially if you want things to run smoothly down the line.
First off, you want to make sure to include only the necessary files so that you can ditch any unused ones for an efficient setup.
This not only keeps your project tidy but also helps with stability in your configurations.
Speaking of configurations, don’t forget to adjust those macro constants! By adding ‘1, XT’, you’re actually boosting functionality.
Also, consider tweaking those pin settings to include a pull-up with an interruption—this can really help your project’s performance and adaptability.
Lastly, managing your LED operations through interrupts rather than digital read commands can streamline your setup.
Just remember to disable any preliminary configurations before diving into your interruption settings for the best results!.

Let’s dive into setting up interrupt functions! First off, the function voidPC irq void is on the table; while its specific name isn’t a big deal, it’s essential to include “interrupt” in the definition.
Now, for port C, we’ve got a noteworthy detail: it uses interrupt number 5, so keeping that in mind is key, even if the function name can be flexible.
If you want to keep things organized, you might want to stick with a naming convention like the PCIRQ handler to tell the different ports apart.
The code we’re working with reacts to signal changes, whether they’re going from high to low or the other way around, so remember to check the signal state.
Recently, we’ve made some tweaks by switching the pin from no interrupt to interrupt mode, and we’ve also set up the rise-fall interrupt configurations.
Testing has shown that everything runs smoothly, responding reliably to low, high, and fall states just like before.
If you’re thinking about using another pin for interrupts, take a peek at the pin map for compatibility—like PD6 on port D.
And finally, don’t hesitate to get creative; starting with a solid framework allows you to customize things to fit your needs perfectly..

In this session, we dove into how to manage interrupts on the SM8 microcontroller.
We really explored this topic, giving everyone some key insights into the process.
And don’t worry if you missed something, because future sessions are lined up to introduce even more exciting topics, keeping the learning journey going..