JPS638842A - Control software testing device for digital signal processor - Google Patents

Abstract

PURPOSE:To evaluate whether a control software is efficiently programmed or not by carrying out the pseudo execution of the control software of a digital signal processor and editing and displaying execution procedure. CONSTITUTION:Control software to be evaluated is inputted to and temporarily stored in an input storage means 1, and a pseudo execution means 2 pseudo execution of the control software stored in the input storage means 1, and execution procedures, for example, time series operating states of a data bus, registers, etc., are stored in a process storage means 3. An editing means 4 edits the execution procedures stored in the process storage means 3 so that they are easy for an evaluator to see, and the edited results of the editing means 4 are displayed on a display means 5. Thus, the time series operating condition of the digital signal processor (DSP) is recognized to easily evaluate whether the software is suitable for the efficient operation of the DSP or not.

Description

[Detailed Description of the Invention] Overview Digital signal block [1] By executing the control software of one setter in a pseudo manner, editing and displaying the execution procedure at this time, it is possible to check whether the control software is efficiently assembled. This makes it possible to evaluate

INDUSTRIAL APPLICATION FIELD OF THE INVENTION The present invention relates to digital signal processors, and more particularly to the evaluation of their control software.

In recent years, 1. With advances in sI technology, digitalization of signal processing is progressing rapidly. Even in the field of communications, J3 can digitize signals such as audio and images, and replace conventional analog signal processing such as filtering and modulation/demodulation with digital signal processing, without using complex electrical circuits. Waveform processing has become possible.

By the way, in order to easily handle these various types of signal processing, a program-controlled general-purpose processor is required. However, when it comes to real-time processing of main signals in the field of communications, general microprocessors have problems with processing speed, and a dedicated digital signal processor (hereinafter referred to as DSP) is usually used.

In response to demands for increased processing speed, DSPs have an architecture that allows them to execute multiple instructions at the same time, and also employ many special instructions that differ from those of general microprocessors. For this reason, the software to control the DSP is far more complex than that of a general microprocessor, and the question is whether or not the assembled software is suitable for operating the DSP efficiently. There has been a demand for the establishment of an evaluation method for determining whether or not there is waste in data exchange between DSP components such as registers and registers.

Conventional techniques and problems Conventionally, the creation of DSP control programs has completely depended on the skills of software engineers, and the evaluation of the assembled software has been based on logical analysis by actually running this software on the DSP. All I had to do was make sure it was running correctly.

Therefore, there is no way to know about the compatibility between the DSP and its control software other than by checking all instructions by the engineer concerned, and when a performance problem occurs in a system configured using a DSP, such as a problem with processing speed. In fact, it was unclear whether this problem was caused by hardware or software.

The present invention was created in view of these circumstances, and -
The present invention aims to provide a test device that can evaluate whether or not control software is suitable for efficiently operating a DSP without checking each command of a program.

SUMMARY OF THE INVENTION Referring to FIG. 1, a block diagram of the principles of the present invention is shown.

In the figure, reference numeral 1 denotes an input storage means for inputting and temporarily storing control software having an evaluation power of 1°.

Reference numeral 2 denotes a pseudo execution means, which executes the control software stored in the input storage means 1 in a pseudo manner.

Reference numeral 3 denotes a bus storage means, which stores the execution procedure in the pseudo execution means 2, for example, the time-series operational status of the data bus, registers, etc.

Reference numeral 4 denotes an editing means, which edits the execution procedure stored in the process storage means 3 so that it can be easily viewed by the evaluator.

5 is a display means, which displays the editing result of the editing means 4.

The control software to be evaluated is executed in a pseudo-action manner, and after its execution procedure, for example, the time-series operational status of the data bus and registers, etc., are edited, the editing results are displayed. Therefore, the time-series operating status of the DSP can be grasped, and it is possible to easily evaluate whether the software is suitable for operating the DSP efficiently.

Example Hereinafter, the present invention will be described in more detail with reference to Examples.

FIG. 2 is a block diagram of a DSP control software testing device showing a preferred embodiment of the present invention.

A floppy disk 10 stores a control software program to be tested, and the control software read from the floppy disk 10 is temporarily stored in the simulator 11. In the simulator 11, the control software exchanges data as if it were being executed in a DSP,
The situation is extracted in real time by three sampling devices shown below.

First, the operating status of the accumulator of the DSP, ie, the presence or absence of data in the accumulator at a predetermined time, is extracted by the accumulator sampling device 12.

Next, the memory access numbering device 13 extracts whether or not the DSP accesses the memory at a predetermined time. Finally, the data flow sampling device 14 extracts the data exchange at a predetermined time on a plurality of data buses that the DSP normally has. These extracted various data are collected by the sampling data collection device 1.
5, the data is compiled into time-series data and stored in the process storage device 16. These time-series data are read out by the editing device 17 as necessary, converted into a graphical representation format using a conventional method, and outputted to a display device such as a display 18 and a printer 19.

Of the configurations described above, the simulator 11, accumulator summing device 12, memory 7, cress sampling device 13, data flow sampling device 14, sampling data collection device 15, and editing device 17 are configured using a general microprocessor. I can do something. FIG. 3 shows an example of this, and the dotted lines 20 indicate the functions of each of the devices described above.

21 is an input interface circuit (110 circuit) having a multiplexer function;
0 readout device 27 and bus access memory 5A
The output signal from station 16 is connected. Reference numeral 22 denotes an output interface circuit (110 circuit), which is connected to the input side of the process storage device 16 and the display 18 or printer 19. The I10 circuits 21 and 22 are connected via a common path 26 to a CPU 23, a random access memory (RAM) 24, and a read-only memory (ROM) 25, which are the main components of the microcomputer. Transfer of data and instructions, etc.

The DSP control program read from disk 1 is temporarily stored in RAM 2 via I10 circuit 21.
4 is stored. In other parts of RAM 24, DS
Pseudo areas corresponding to the P accumulator, memory, data bus, etc. are provided, and ROM2
According to the program written in 5, various data are exchanged as if the control program were being run inside the DSP, and the chronological storage status of data in the pseudo area at this time is stored in the process memory. stored in device 16; In this case, the necessary information is related to the order of exchange of various data, so C
The machine cycle of the PU 23 does not have to match the machine cycle of the DSP at all, and a normal glue can be used.

Similarly, when editing the data stored in the wrestling storage device @16, the data from the process storage device 16 is
Once stored in the RAM 24 via the RO circuit 21, the RO
Edited according to the procedure written in advance on M25,
The signal is output to the display 18 or printer 19 via the I10 circuit 22.

Effects of the Invention As detailed above, according to the present invention, the test device is configured as if the control software were being executed within the SP, and the data exchange between the various parts is performed in chronological order. Since the software is stored in a graphical manner and further edited and displayed when necessary, it is possible to objectively evaluate whether or not the software is suitable for efficient operation of the DSP.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a block diagram of a DSP control software testing device showing an embodiment of the present invention, and Fig. 3 is a block diagram of the main parts of the testing device. be. 1... Input storage means, 2... Pseudo execution means, 3.
...Process storage means, 4.Editing means, 5.Display means. Principle block diagram of the present invention Fig. 1 Fig. 2

Claims (1)

[Claims] Input storage means (1) for inputting and temporarily storing control software to be evaluated; pseudo execution means (2) for pseudo executing the stored control software; control software A process storage means (3) for storing the execution procedure, an editing means (4) for editing the stored execution procedure, and a display means (5) for displaying the edited result. Control software testing equipment for digital signal processors.