Serial port achievement method for segmented loading of DSP program

Abstract

The invention provides a serial port achievement method for segmented loading of a DSP program and belongs to the field of embedded device software program upgrading and updating methods. The serial port achievement method comprises the steps that a program is stored in a segmented mode by modifying a CMD file and is cured in FLASH for the first time through a JTAG simulator, then only a combinedsystem needs to be connected with an upper computer through a serial interface in follow-up debugging, the updated segmented programs are written into designated positions of the FLASH through serialport loading application software to achieve partial loading of the program, and a new complete program can run after re-powering-on reset. The program loading mode of the method is simple and easy, program updating is flexible, a development cycle is greatly shortened, the function upgrading capability of the combined system is enhanced, and even the phenomenon that a DSP is suddenly powered downoccurs in the program updating process, the DSP can normally execute undeleted program parts after being powered on again. Only FLASH address fields corresponding to the undeleted program parts are erased, and unnecessary FLASH erasing time is saved.

Description

technical field [0001] The invention provides a serial port realization method for segment loading of a DSP program, which belongs to the field of updating methods for software programs of embedded devices. Background technique [0002] With the development of signal processing technology and the continuous deepening of research, the combination of DSP and FPGA is generally used to realize signal processing at this stage, in which FPGA is responsible for signal acquisition, AD conversion, and extraction of signal parameters, etc., and DSP realizes the control of main functions, Calculate complex algorithms based on the information obtained by the FPGA, and transmit the calculation results to the display terminal. [0003] The main concern of the present invention is the storage and loading of DSP programs in the above-mentioned combined system. At present, DSP mainly uses external FLASH memory to store programs. After power-on, DSP can move the program code in FLASH to RAM ...

AI Technical Summary

Problems solved by technology

In addition, the currently used serial port loading software and DSP do not have the information interaction function, but the serial port loading software transmits data to the DSP one-way, and it is unknown whether the DSP receives the data normally, and it is impossible to recognize the information fed back by the DSP, because in the DSP There is no corresponding communication protocol established between the serial port loading software

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