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The general development process for
embedded products typically involves the following steps:
1. Hardware Design: This stage focuses on
designing components such as network cards, USB controllers, and other necessary
hardware elements.
2. BootLoader Transplantation: The BootLoader
is transplanted into the embedded system, which serves as the initial program
loaded by the processor during startup.
3. Kernel Transplantation: This step involves
porting the Kernel, also known as the minimum system transplantation. After the
Kernel transplantation, the system is capable of network communication through
the serial port and is ready to work with the root file system and other
essential components.
4. Network Protocol Stack and Driver
Development: In this stage, the network protocol stack is developed, including
the creation of new protocols and the design of processing routines based on
existing protocols. Additionally, driver development encompasses the creation
of character device drivers, block device drivers, and network device drivers.