FLASH memorizer long-distance on-line upgrade method based on field programmable gate array (FPGA)

Abstract

The invention provides a FLASH memorizer long-distance on-line upgrade method based on a field programmable gate array (FPGA). The FPGA serves as a main control chip and is used for receiving a command frame sent by an upper computer, feeding a response frame back to the upper computer and carrying out erasure and programming operation on a FLASH memorizer. The FPGA is used for receiving the command frame sent by the upper computer through a protocol of a serial port and judging that the command frame is a FLASH erasing command or a FLASH data frame through a zone bit of the command frame, wherein the FLASH erasing command comprises digital signal processing (DSP) programming file total length information, and the FLASH data frame comprises concrete contents of the DSP programming file. According to the FLASH memorizer long-distance on-line upgrade method based on the FPGA, the long-distance on-line upgrade of the FLASH memorizer can be achieved without dismounting the whole system, a long-distance on-line upgrade module is not affected, and vigorousness of the system is increased.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a remote online upgrading method of a FLASH memory. Background technique [0002] At present, in the system design, the real-time requirement for the realization is getting higher and higher. Therefore, the architecture of Field Programmable Gate Array FPGA (Field Program Gates Array) plus high-speed digital signal processor DSP (Digital Signal Processig) has been more and more used. FLASH memory, also known as flash memory, is usually used as a program memory for DSP because it can be erased and written multiple times online and will not lose data when power is turned off. [0003] Online upgrade is also called online programming, that is, the content in the FLASH memory can be updated online. Generally speaking, there are three ways to burn the DSP program code into the FLASH memory: 1. Program the FLASH memory through the JTAG emulation interface of the DSP, but it canno...

AI Technical Summary

Problems solved by technology

Generally speaking, there are three ways to burn the DSP program code into the FLASH memory: 1. Program the FLASH memory through the JTAG emulation interface of the DSP, but it cannot be separated from the software emulation environment, and the device shell needs to be opened during programming. It is difficult to adapt to the requirements of remote online programming, and the emulator also increases the cost; 2. Use a dedicated programmer for offline programming, but this method is complicated to operate and cannot perform arbitrary online programming on the contents of the FLASH memory; 3 .DSP chip as CPU to program FLASH memory online

Although this method can remotely upgrade the FLASH memory online, it also has its drawbacks

In this method, once the power is cut off or fails during the upgrade process, the upgrade fails, then the old DSP program code in the FLASH memory will be erased, and the new code has not been written. When the power is turned on again, the DSP cannot be bootstrapped. run, so that the system cannot perform remote online upgrade again

Images