Program downloading method and device for embedded type CPU minimum systematic module

Abstract

The invention provides a program downloading method which is used in the minimum system module of an embedded CPU. And the method includes the steps as follows: step 1, the JTAG interface on the minimum system module of the embedded CPU can be used to download the guide program to the storage module on the minimum system module of the embedded CPU; step 2, the downloaded guide program can be usedto allocate a low-speed communications interface on the minimum system module of the embedded CPU, and the minimum system module of the embedded CPU can restart; step 3, the low-speed communications interface downloads a first application program to a fast storage; the invention also provides a program downloading program which can be used in the minimum system module of an embedded CPU, and the device comprises a guide program downloading unit, a first configuration unit, and a first application program downloading unit; thereby, the method and the device provided by the invention can reducethe design size of the minimum system module, and can simplify the production process of the minimum system module.

Description

technical field [0001] The present invention relates to a downloading method, more specifically, to a program downloading method and device for the smallest system module of an embedded CPU. Background technique [0002] figure 1 It is a flow chart of program downloading of the smallest system module of an embedded CPU according to the prior art. [0003] Embedded CPU minimum system is widely used in IT products. The application program runs on the CPU minimum system to manage functional subsystems such as circuit boards. In order to speed up the development speed, the embedded CPU minimum system is often modularized. In the industrialized production of IT products, it is necessary to download the bootloader and application program to the embedded CPU minimum system module quickly and in large quantities. In the past, to download the boot program for the smallest system module, it was necessary to pull out the pluggable program storage devices on the module. These device...

AI Technical Summary

Problems solved by technology

Obviously, this method is more time-consuming and labor-intensive

[0004] In addition, pluggable FLSAH or EEPROM requires a socket on the module, which may not be acceptable for size-sensitive module designs

If a non-volatile memory device without a socket (such as a patch-type FLASH device) is used instead of a device with a socket, the size of the design will be reduced, but how to download the bootloader for the patch-type FLASH on the module becomes a problem , because it is not possible to unplug the FLASH and put it on the burner to burn

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