DSP circuit structure and DSP online program upgrading method and device

Abstract

The invention discloses a DSP circuit structure and a DSP online program upgrading method and device. The method comprises the steps: obtaining a first input signal after power-on; when the first input signal conforms to a first preset value, the RXD signal is controlled to be connected with the TTL-RX signal, and the TXD signal is controlled to be connected with the TTL-TX signal; the RST signaland the XA12 signal are controlled to be pulled down; if a second input signal conforming to a second preset value is obtained, the RST signal is controlled to be pulled up; data interaction with an upper computer is realized based on the two signal interfaces, and program updating of the DSP is completed. The method is applied to the implementation process. Whether an upgrading task exists currently or not is determined by comparing the obtained signal with a preset value, and then an upgrading instruction is determined by detecting the change of the obtained signal, so that misoperation canbe greatly avoided, interference to other work is avoided, the whole implementation process is simple and convenient, and the use experience of a user is improved.

Description

technical field [0001] The present invention relates to software upgrading technology, more specifically, relates to a DSP circuit structure, DSP online program upgrading method and device. Background technique [0002] DSP (digital signal processor, digital signal processor) is a unique microprocessor, a device that processes a large amount of information with digital signals. During the use of DSP, its built-in program will need to be updated. [0003] In the prior art, the DSP program upgrade is generally realized in three ways, that is, using an emulator to download the upgrade program, adopting an IAP (In Application Programming, in application programming) mode to carry out online programming upgrade of the FLASH program memory and adopting an ISP (In Application Programming) method. System Programming, in-system programming) to perform online programming and upgrading of the FLASH program memory. However, the above three methods all have their own shortcomings, such...

AI Technical Summary

Problems solved by technology

However, the above three methods all have their own shortcomings, such as the emulator download method cannot realize online upgrade; the realization of the IAP method must first burn the upgrade service program on the DSP, and there is also a probability of misoperation in the implementation process; the ISP method implementation process requires Lead out the configuration line, which may cause additional interference and work failure

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