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Upgrading device and method in operation for monolithic processor system

A single-chip microcomputer and running technology, applied in the field of electronics, can solve the problems of automatic rewinding and upgrading of programs, and achieve the effect of saving maintenance time and reducing manpower and material costs

Inactive Publication Date: 2008-02-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device and method for upgrading a single-chip system during operation, to overcome the problem that the single-chip system in the prior art cannot be upgraded during operation or can be upgraded during operation, but if the programming process goes wrong or the new program goes wrong, it cannot be realized. Defects of the original program automatic rewind function

Method used

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  • Upgrading device and method in operation for monolithic processor system
  • Upgrading device and method in operation for monolithic processor system
  • Upgrading device and method in operation for monolithic processor system

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Embodiment Construction

[0039] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:

[0040] The system structure of the present invention is shown in Figure 1, and the system communicates with the computer through a serial port or a parallel port. The system includes three parts: MCU, program storage and data buffer. The program storage part further includes an application program storage area A, an application program storage area B and a flag area. The single-chip microcomputer part can read and write to the program storage part and the data buffer part respectively.

[0041] The present invention will be described in detail below by taking the hardware circuit of the single-chip microcomputer system shown in FIG. 2 as an embodiment. Referring to Fig. 2, the system includes three parts: microcontroller unit, program storage unit and data buffer unit. The MCU uses the AT89C51 chip as the CPU. The 4K on-chi...

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Abstract

The present invention includes monolithic computer portion, program store portion and data buffer portion. Said invention first selects application program storage area, then writing systematical application program in said application program storage area, judging whether said systematical application program is right, if it is right then feeding back systematical application program before updating.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a device and method for upgrading a single-chip microcomputer system during operation. Background technique [0002] Currently, equipment upgrades are a common occurrence in electronic products. For single-chip microcomputer systems, the program codes that usually run are solidified in the ROM (Read-Only Memory, read-only memory) chip or the flash ROM that comes with the single-chip microcomputer. Trouble, and power failure will affect the normal operation of the system. [0003] Now some manufacturers have improved the CPU chip and introduced enhanced single-chip microcomputers to realize the functions of loading software on the board and loading software during operation. For example, P89C51RX+ series MCU can choose whether to use the firmware program or the flash program. If you choose to use the firmware program, you can load the flash software on the board, and this ty...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445
Inventor 黄鸿贵
Owner HUAWEI TECH CO LTD
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