Program debugging method of embedded system and embedded system

Abstract

The invention provides a program debugging method of an embedded system and the embedded system, belonging to the field of program debugging. The method comprises the steps that: the CPU (central processing unit) of the embedded system receives a higher-level debugging command from a debugging host computer by the communication port of the CUP and converts the higher-level debugging command into a bottom-level debugging command; a testing access port controller stores the data corresponding to the bottom-level debugging command to a register of an embedded real-time on-line circuit simulator in advance; the embedded real-time on-line circuit simulator compares the data stored in the register in advance with the data of the CPU at the time of program real-time operation, and enters the program into a debugging mode when the two data are consistent; and then the CPU carries out protocol conversion on the data generated by the program real-time operation and transmits to the debugging host computer by the communication port of the CPU. According to the invention, the CPU transmits the higher-level debugging command by the communication port of the CPU, converts the higher-level debugging command into the bottom-level debugging command, and outputs the data by the communication port of the CPU after entering the debugging mode, so that the debugging cost is lowered.

Description

technical field [0001] The invention relates to the technical field of program debugging, in particular to a program debugging method for an embedded system and the embedded system. Background technique [0002] The main work of program debugging is to track the assignment process of variables and view the contents of the memory stack. The purpose of viewing these contents is to observe the assignment process and status of variables, so as to achieve the purpose of debugging. At present, in addition to software debugging, program debugging also has hardware debugging. [0003] The so-called hardware debugging refers to a cross-debugging process realized with the cooperation of computer debugging software. The process of hardware debugging is mainly: the computer software transmits the compiled program to the emulator through the serial port, parallel port or USB port, and the emulator simulates all target board resources such as all target board interfaces and real pin outp...

AI Technical Summary

Problems solved by technology

Because the purchase cost of this online debugger ICD is often tens of thousands of yuan, and some are as high as more than ten thousand yuan, which makes the cost of program development relatively high.

In addition, since this special in-circuit debugger ICD is used to connect between the debugging host and the debugging target, corresponding port leads must be set on the development board of the debugging target, which increases the packaging cost of the development board.

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