I found that I understood the driver, file system, protocol stack, and startup file clearly in STM32, and then looked at the Linux driver, root file system, network programming, protocol stack, and bootloader.

I found that I understood the driver, file system, protocol stack, and startup file clearly in STM32, and then looked at the Linux driver, root file system, network programming, protocol stack, and bootloader. Before you looked at Linux, such as root file system and network programming, you didn't quite understand it. You only know these concepts by rote.

 

Of course thanks to Huaqing for the serial port class

And the book "Learning Embedded Development from Engineers", which talked about the file system protocol stack.

 

 

 

 

The bootloader is very similar to the boot file of STM32, don't you think it initializes and sets the software and hardware, and prepares the environment for the final running of the operating system.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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