Embedded operating system Puns

What is it that allows a raspberry pi to run an OS but not a micro controller?

If you've done both courses, which one did you find easier? What programming languages do you use in 3215? I know that in 3221 you use C.

I’m not sure if this question is really for osdev or not but I am currently trying to develop an embedded operating system for a microcontroller that runs on AVR architecture. However, I don’t really know what tools to use (gcc, any other tools needed) and was wondering if anyone knew of some resources they could share.

Let's say I want to operate an AVR based temperature logger that operates at 3.3v. However, the temperature sensor only works at 5.0v. If I am operating the microcontroller through 3 AAA batteries, it is theoretically providing 4.5v. Now when designing even such basic system, I need a buck converter to bring down 4.5 to 3.3 and the a boost converted to lift 4.5v to 5.0v.

I want to understand the thinking of an embedded system engineer. Would you try to get all components at same voltage level and change the batteries to match the operating voltage range? Or are there cheap buck boost ICs available? I am talking with an idea to make a prototype breadboard permanent for some small home automation project. So obviously cost is a consideration and the only user is just me.

Also from your experience I want to understand in commercial applications are there many different voltages provided to different components? For cheaper applications like toys and stuff, do they even use buck boost converted or just slap on linear voltage regulators which is why the battery life sucks sometime?

Can you list out a general guideline for similar subjects that one need to get exposure that would be handy for embedded world ?

Lots of insights are welcome 🙏🏻

HiHi Everyone, so happy to join this community. Hope to share and to be shared with any of the ideas here.

RT-Thread is an open-source, neutral, and community-based real-time operating system (RTOS). As an open-source project, we deeply learned that Open Source is not just about sharing the code, it is about sharing every idea, talking with each other, exploring, finding more possibilities, and making progress together. Here's our project story.

RT-Thread has Standard version and Nano version:

• For resource-constrained microcontroller (MCU) systems, the NANO kernel version that requires only 3KB Flash and 1.2KB RAM memory resources can be tailored with easy-to-use tools;
• For resource-rich IoT devices, RT-Thread can use the on-line software package management tool, together with system configuration tools, to achieve intuitive and rapid modular cutting, seamlessly import rich software packages, thus achieving complex functions like Android's graphical interface and touch sliding effects, smart voice interaction effects, and so on.

RT-Thread Architecture:

RT-Thread has not only a real-time kernel, but also rich components. Its architecture is as follows:
It includes:

https://preview.redd.it/2huyk068ql351.png?width=934&format=png&auto=webp&s=2d55d329e1fde3c40889b6ef179f10358de19948

• Kernel layer: RT-Thread kernel, the core part of RT-Thread, includes the implementation of objects in the kernel system, such as multi-threading and its scheduling, semaphore, mailbox, message queue, memory management, timer, etc. libcpu/BSP (Chip Migration Related Files/Board Support Package) is closely related to hardware and consists of peripheral drivers and CPU porting.
• Components and Service Layer: Components are based on upper-level software on top of the RT-Thread kernel, such as virtual file systems, FinSH command-line interfaces, network frameworks, device frameworks, and more. Its modular design allows for high internal cohesion inside the components and low coupling between components.
• RT-Thread software package: A general-purpose software component running on the RT-Thread IoT operating system platform for different application areas, consisting of description information, source code or library files. RT-Thread provides an open package platform with officially available or developer-supplied packages that provide developers with a choice of reusable packages that are an important part of the RT-Thread ecosystem. The

Hello

I would like to know which books you recommend me to read to learn more about Real Time Operating Systems on embedded devices. I would like to learn how to properly work with freertos (how to eg architecture my code when using an RTOS), how RTOS work and how to port eg freertos to an unsupported hardware platform.

Thanks

RT-Thread was born in 2006, it is an open-source, neutral, and community-based real-time operating system (RTOS).

RT-Thread is mainly written in C language, easy to understand and easy to port(can be quickly ported to a wide range of mainstream MCUs and module chips). It applies object-oriented programming methods to real-time system design, making the code elegant, structured, modular, and very tailorable.

RT-Thread has a Standard version and Nano version. For resource-constrained microcontroller (MCU) systems, the NANO kernel version that requires only 3KB Flash and 1.2KB RAM memory resources can be tailored with easy-to-use tools; And for resource-rich IoT devices, RT-Thread can use the on-line software package management tool, together with system configuration tools, to achieve intuitive and rapid modular cutting, seamlessly import rich software packages, thus achieving complex functions like Android's graphical interface and touch sliding effects, smart voice interaction effects, and so on.

RT-Thread Architecture

RT-Thread has not only a real-time kernel but also rich components. Its architecture is as follows:

https://preview.redd.it/myk2s8pfu4p41.png?width=715&format=png&auto=webp&s=8b8b77420ae7ce477b57764fc333cd5a95d982b4

It includes:

• Kernel layer: RT-Thread kernel, the core part of RT-Thread, includes the implementation of objects in the kernel system, such as multi-threading and its scheduling, semaphore, mailbox, message queue, memory management, timer, etc.; libcpu/BSP (Chip Migration Related Files/Board Support Package) is closely related to hardware and consists of peripheral drivers and CPU porting.
• Components and Service Layer: Components are based on upper-level software on top of the RT-Thread kernel, such as virtual file systems, FinSH command-line interfaces, network frameworks, device frameworks, and more. Its modular design allows for high internal cohesion inside the components and low coupling between components.
• RT-Thread software package: A general-purpose software component running on the RT-Thread IoT operating system platform for different application areas, consisting of description information, source code or library files. RT-Thread provides an open package platform with officially available or developer-supplied packages that provide developers with a choice of reusable packages that are an important part of the RT-Thread ecosystem. The package ecosystem is critical to the choice of an oper