Method for realizing embedded system run based on start loading programme

Abstract

Start-up loading program accomplishes basic setting for single board including configuration of each chip and subsystem, settings of communication parameters and configuration of file system. The start-up loading program also executes following processes: (1) loading basic read / write commands of peripheral devices for supporting requirement of system; (2) loading setting up commands combined from the basic read / write commands to control each functional chip to execute certain actions or change dada stored in storage chip; (3) system enters into waiting state for waiting for user's command to be inputted to, and parses user's command to execute different operations. Implementing part of OS functions, the method down loads files to pointed position through communication in high speed after system run. Features are: convenience and compact, increasing loading speed and quickening developing and debugging speed.

Description

technical field [0001] The invention relates to an embedded device start-up technology including storage, communication and device basic read and write operations, in particular to a method for executing start-up and loading of an embedded system, so as to improve the development speed and start-up speed of the embedded device. [0002] The invention is mainly applied in the field of small embedded device development. Background technique [0003] The so-called embedded device refers to a device that uses a microprocessor and has a cooperating software system to run the software system to operate the hardware device to complete a certain or a certain type of specific task. [0004] The current small embedded devices (mainly referring to embedded devices using a main microprocessor) usually load a real-time (or time-sharing) multitasking (or single task) operating system onto a single-board main microprocessor applications, resulting in faster development and higher board pe...

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Problems solved by technology

[0006] This method takes up more resources, because uclinux is a general-purpose system, not customized for a single board system, many functions are not actually used, but it also takes up resources

[0007] For example, the linux kernel program contained in uclinux is a system kernel that supports multi-threaded time-sharing processing. This kernel contains more complex process / thread scheduling management programs, including process priority management, memory management, stack management and other management programs; Such a complex management program may not be needed in a specific system, but because uclinux is a general-purpose operating system, it is impossible to modify its kernel to be consistent with the needs of a specific system; these complex functional programs that are not needed but cannot be deleted occupy the system The storage space, running memory space and microprocessor running time actually reduce the efficiency of the system

[0008] At the same time, the uclinux system must use the linux command system and the linux storage format, so that the development of embedded systems must be carried out in the linux development environment. Many programmers with good Windows programming experience must relearn the programming of the linux environment. To a certain extent, the entry level of embedded

[0009] Similarly, there are programs such as memory allocation management and Ethernet support. They may not be needed by a specific system, but they also occupy system resources.

[0010] To sum up, in the development of embedded systems, the use of uclinux general system development is the same. Although it is a relatively simple implementation solution, it actually slows down the running speed of the single board and limits the development of embedded systems.

Similarly, developing with other general-purpose operating systems also has the problem of simple solutions but low efficiency

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