[Background] During the discussion of a control command, we proposed to use the SOME/IP protocol, but the other party suddenly suggested using the MQTT protocol for transmission. This proposal was something we had not encountered before, which left us a bit confused. Therefore, classmate Jiahui conducted an investigation and comparison of the two protocols and … Read more
This release marks version 2.0, primarily adding support for the AutoSAR protocol stack. Vehicle Technology released the free version of the excel2dbc tool three years ago. The definition of free is: no authorization code required, no internet connection needed, freely copied and distributed, and no expiration date! Three years later, it has finally been updated, … Read more
In engineering, there are many issues related to sleep and wake-up. In the vehicle’s network topology, many nodes have similar problems. For example: Reusing SPI leads to communication loss, nodes cannot sleep, node startup time exceeds the required time, nodes occasionally cannot wake up, and so on. These engineering issues are sometimes viewed as network … Read more
Autosar OS – Task Management Autosar – OS Scheduler Strategies After reading the above two articles, I believe everyone has a profound understanding of the scheduler and task switching, mastering the operating principles of the scheduler, but there may still be some questions regarding details. For example: how does a task enter the ready state? … Read more
Understanding the function call process is beneficial for implementing the AUTOSAR layered architecture. 1 Memory Distribution of the Program In embedded systems, what is the internal mechanism when a function is called, and what steps are executed? As shown in Figure 1, first, let’s look at the memory distribution of a program when it is … Read more
Since the update of the first article on May 30, 2021, until today, the last day of 2023, we have authored 138 original articles over the course of more than two years. From initial learning notes to now being able to share some experience summaries, we have grown continuously along the way, thanks to everyone’s … Read more