CN106648807B - DSP software uploading and updating method based on FLASH memory - Google Patents
DSP software uploading and updating method based on FLASH memory Download PDFInfo
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- CN106648807B CN106648807B CN201710014679.3A CN201710014679A CN106648807B CN 106648807 B CN106648807 B CN 106648807B CN 201710014679 A CN201710014679 A CN 201710014679A CN 106648807 B CN106648807 B CN 106648807B
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- G06F8/65—Updates
- G06F8/654—Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
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Abstract
The invention discloses a DSP software uploading and updating method based on a FLASH memory, which comprises the following steps: s1, the upper layer system establishes uploading software command frame information and sends the uploading software command frame information to the computer, the original DSP software which is stored in a FLASH memory of the computer and runs on a DSP chip generates uploading software according to the uploading software command frame information and stores the uploading software in an SRAM memory of the computer, and then the uploading software runs on the SRAM memory; s2, the upper layer system establishes new DSP software command frame information and sends the new DSP software command frame information to the computer, and the uploading software generates new DSP software according to the new DSP software command frame information and stores the new DSP software in the SRAM memory; s3, the upper system sends an erasing command to the computer, the uploading software erases the original DSP software in the FLASH memory after receiving the erasing command, and then the new DSP software in the SRAM memory is written into the FLASH memory; and S4, loading the new DSP software stored in the FLASH memory into the DSP chip for running, and completing the uploading and updating of the DSP software. The invention improves the uploading reliability and efficiency of the DSP software.
Description
Technical Field
The invention relates to a software uploading and updating method. More particularly, the invention relates to a DSP software uploading and updating method based on a FLASH memory.
Background
The existing DSP (Digital Signal Processing) software adopts an EPROM (EPROM) memory as a carrier to store programs, the software needs to be burnt in the EPROM memory before system test, when the system test is carried out, the system needs to be disassembled if software upgrading is needed, a hardware device for solidifying the DSP software is taken out, and the EPROM memory is burnt again to replace the software. In recent years, most DSP software is stored and run in FLASH memory, but due to different hardware interfaces, various software uploading methods are designed. In particular, some DSP software includes operations for directly erasing and writing the FLASH memory, and there is a risk of erroneously deleting and rewriting the DSP software in the FLASH memory.
Therefore, it is necessary to provide a DSP software uploading and updating method based on FLASH memory, which has small system integration scale and improves the DSP software uploading reliability and efficiency.
Disclosure of Invention
The invention aims to provide a DSP software uploading and updating method based on a FLASH memory, which solves the problem that the DSP software is mistakenly deleted and rewritten during uploading and updating, realizes the modularized and flow design of the uploading and updating of the DSP software, and meets the requirement of standardizing the flow design.
In order to achieve the purpose, the invention adopts the following technical scheme:
a DSP software uploading and updating method based on a FLASH memory comprises the following steps:
s1, the upper layer system organizes and establishes uploading software command frame information according to the frame format of the uploading software, sends the uploading software command frame information to the computer, the original DSP software which is stored in a FLASH memory of the computer and runs on a DSP chip generates the uploading software according to the uploading software command frame information, stores the uploading software in a fixed unit of an SRAM memory of the computer, and then runs the uploading software in the SRAM memory;
s2, the upper layer system organizes and establishes new DSP software command frame information according to the frame format of the new DSP software, sends the new DSP software command frame information to the computer, and the uploading software generates new DSP software according to the new DSP software command frame information and stores the new DSP software in the SRAM memory;
s3, the upper system sends an erasing command to the computer, the uploading software erases the original DSP software in the FLASH memory after receiving the erasing command, and then the new DSP software in the SRAM memory is written into the FLASH memory;
and S4, loading the new DSP software stored in the FLASH memory into the DSP chip for running, and completing the uploading and updating of the DSP software.
Preferably, the connection between the upper layer system and the computer is realized by a bus communication cable.
Preferably, step S2 further includes the steps of: and the uploading software reads the new DSP software from the SRAM memory and sends the new DSP software to the upper-layer system.
Preferably, step S3 further includes the steps of: the upper layer system compares the received new DSP software with the command frame information of the new DSP software, and if the comparison is correct, an erasing command is sent to the computer.
Preferably, step S3 further includes the steps of: and the uploading software judges whether the erasing is correct, and if so, the new DSP software in the SRAM memory is written into the FLASH memory and the erasing and writing results are sent to the upper system.
Preferably, step S4 further includes the steps of: and the upper-layer system executes restarting operation on the computer after receiving the erasing and writing results, loads the new DSP software stored in the FLASH memory into the DSP chip for running, and finishes uploading and updating of the DSP software.
Preferably, step S4 further includes the steps of: and deleting the uploading software and the new DSP software stored in the SRAM memory.
The invention has the following beneficial effects:
the technical scheme of the invention has small system integration scale and improves the uploading reliability and efficiency of the DSP software.
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The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows an application schematic diagram of a DSP software uploading and updating method based on a FLASH memory.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1, the DSP software uploading and updating method based on FLASH memory provided in this embodiment is applied to an aircraft control system, where the aircraft control system includes an aircraft control computer 100 and a ground test system 200, the aircraft control computer 100 includes a DSP chip 101, an SRAM memory 102 and a FLASH memory 103, and the SRAM memory 102 is connected to the ground test system 200 through a bus communication cable 300;
the ground test system 200 serves as an upper layer system of the aircraft control computer 100, has a bus communication system organization information transmission function, and performs corresponding bus communication and control functions on the aircraft control computer 100 through a bus communication cable to complete uploading and updating of DSP software.
The FLASH memory 103 stores DSP software, and the SRAM memory 102 stores upload software and new DSP software.
When the aircraft control computer 100 is started, the original DSP software stored in the FLASH memory 103 is automatically loaded into the DSP chip 101 to run, waiting for a command from the ground test system 200.
The method for uploading and updating the DSP software based on the FLASH memory provided by the embodiment comprises the following steps:
s1, the ground test system 200 organizes and establishes upload software command frame information according to the frame format of the upload software, and sends the upload software command frame information to the aircraft control computer 100 through the bus communication cable 300, the original DSP software stored in the FLASH memory 103 and running on the DSP chip 101 receives the upload software command frame information, generates upload software according to the upload software command frame information and stores the upload software in the fixed unit of the SRAM memory 102, and then starts the upload software to run in the SRAM memory 102;
s2, the ground test system 200 organizes and creates new DSP software command frame information according to the frame format of the new DSP software, and sends the new DSP software command frame information frame by frame to the aircraft control computer 100 through the bus communication cable 300, the upload software stored in the SRAM memory 102 and running in the SRAM memory 102 receives the new DSP software command frame information, generates new DSP software according to the new DSP software command frame information and stores the new DSP software in the SRAM memory 102, reads the new DSP software from the SRAM memory 102, and downloads the read new DSP software to the ground test system 200;
s3, the ground test system 200 compares the received new DSP software with the command frame information of the new DSP software which is established at the beginning, if the comparison is correct, an erasing command is sent to the aircraft control computer 100, the new DSP software is stored in the SRAM memory 102, the uploading software which runs in the SRAM memory 102 erases the original DSP software in the FLASH memory 103 after receiving the erasing command, whether the erasing is correct is judged, if the erasing is correct, the new DSP software in the SRAM memory 102 is written into the FLASH memory 103, and the erasing and writing results are sent to the ground test system 200;
s4, after receiving the result of erasing and writing sent by the upload software, the ground test system 200 performs a restart operation on the aircraft control computer 100, and after the restart operation, automatically deletes the upload software and the new DSP software stored in the SRAM memory 102, and automatically loads the new DSP software stored in the FLASH memory 103 into the DSP chip 101 to run, thereby completing the update of the upload of the DSP software.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (7)
1. A DSP software uploading and updating method based on a FLASH memory is characterized by comprising the following steps:
s1, the upper layer system organizes and establishes uploading software command frame information according to the frame format of the uploading software, sends the uploading software command frame information to the computer, the original DSP software which is stored in a FLASH memory of the computer and runs on a DSP chip generates the uploading software according to the uploading software command frame information, stores the uploading software in a fixed unit of an SRAM memory of the computer, and then runs the uploading software in the SRAM memory;
s2, the upper layer system organizes and establishes new DSP software command frame information according to the frame format of the new DSP software, sends the new DSP software command frame information to the computer, and the uploading software generates new DSP software according to the new DSP software command frame information and stores the new DSP software in the SRAM memory;
s3, the upper system sends an erasing command to the computer, the uploading software erases the original DSP software in the FLASH memory after receiving the erasing command, and then the new DSP software in the SRAM memory is written into the FLASH memory;
and S4, loading the new DSP software stored in the FLASH memory into the DSP chip for running, and completing the uploading and updating of the DSP software.
2. The DSP software uploading updating method based on FLASH memory according to claim 1, wherein the connection between the upper system and the computer is realized by using a bus communication cable.
3. The DSP software uploading method based on FLASH memory according to claim 1, wherein the step S2 further comprises the steps of: and the uploading software reads the new DSP software from the SRAM memory and sends the new DSP software to the upper-layer system.
4. The DSP software uploading method based on FLASH memory of claim 3, wherein the step S3 further comprises the steps of: the upper layer system compares the received new DSP software with the command frame information of the new DSP software, and if the comparison is correct, an erasing command is sent to the computer.
5. The DSP software uploading method based on FLASH memory according to claim 1, wherein the step S3 further comprises the steps of: and the uploading software judges whether the erasing is correct, and if so, the new DSP software in the SRAM memory is written into the FLASH memory and the erasing and writing results are sent to the upper system.
6. The DSP software uploading updating method based on FLASH memory according to claim 5, wherein the step S4 further comprises the steps of: and the upper-layer system executes restarting operation on the computer after receiving the erasing and writing results, loads the new DSP software stored in the FLASH memory into the DSP chip for running, and finishes uploading and updating of the DSP software.
7. The DSP software uploading method based on FLASH memory of claim 6, wherein the step S4 further comprises the steps of: and deleting the uploading software and the new DSP software stored in the SRAM memory.
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