CN105183523A - Method for remote upgrade of digital signal processor (DSP) program - Google Patents
Method for remote upgrade of digital signal processor (DSP) program Download PDFInfo
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- CN105183523A CN105183523A CN201510634073.0A CN201510634073A CN105183523A CN 105183523 A CN105183523 A CN 105183523A CN 201510634073 A CN201510634073 A CN 201510634073A CN 105183523 A CN105183523 A CN 105183523A
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Abstract
The invention provides a method for remote upgrade of a digital signal processor (DSP) program. The method comprises that (1) an SCI BootLoader module judges whether the DSP needs to upgrade according to an upgrade judgment flag bit in EEPROM, if the DSP program needs to be upgraded, the SCI BootLoader module is initialized and upper computer information is received, or the DSP program jumps to entrance of the main program, and the upgrade is over; (2) a CKFA module performs CSM deblocking, if the deblocking is successful, the automatic Baud rate detection is conducted and the upper computer information is received, received binary files are programmed to FLASH to verify programming results, and if the deblocking fails, the DSP program jumps to the entrance of the main program, and the upgrade is over; and (3) the upper computer is matched with the SCI BootLoader module and the CKFA module to perform the remote upgrade. According to the remote upgrade method, the remote upgrade can be performed without the opening of a protection box of the DSP system, and the remote upgrade method has the advantages of being convenient and flexible and easy to achieve. The extra boot time does not exist, the requirement for RAM capacity is low, the power off risk does not exist, and the upgrade is stable and reliable.
Description
Technical field
The present invention relates to a kind of method for updating program, be specifically related to a kind of remote upgrade method of DSP program.
Background technology
Digital signal processor (DSP) can realize multiple digital signal processing algorithm, has good stability, feature that precision is high, is used widely in fields such as image procossing, instrument and meter, control, communications.Under normal circumstances, the programming of DSP program be by jtag interface by download program in FLASH, there is speed of download fast, reliable and stable advantage.But this program down-loading method also having some limitations property, as jtag interface can not realize remote programming.And some system is in order to meet the requirement of maintaining secrecy with reliability, permanent seal is carried out to protection cabinet, has only reserved communication and power port, having also limit and carry out program down loading updating by JTAG mode.
Kinds of schemes is had by serial communication upgrading DSP program.Utilize third party's auxiliary routine C2Prog can be realized the C2000 family chip program burn writing of TI company by serial communication, easy and simple to handle, weak point is that the optional frequency of crystal oscillator is limited, and needs the current potential configuration carrying out GPIO to select SCI start-up mode; Do not utilize third party's program, user can add the module of serial ports upgrading in code, binary executable data are received from serial ports, be stored in RAM, after confirmation is errorless, then writes with a brush dipped in Chinese ink and solidify in FLASH, this scheme codes implement is simple, do not need extra start-up time, but higher to RAM capacity requirement, there is the possibility that power down is lost; In order to reduce the requirement to RAM capacity, can carry out FLASH programming while reception binary executable, can also improve programming efficiency, but the possibility that power down is lost becomes large, reliability reduces.Once occur that power down is lost in FLASH programming process, content writes unsuccessfully, causes serial ports upgrade function to lose efficacy, and JTAG mouth can only be taked to re-write.When judging whether to carry out serial ports upgrading, generally adopt a kind of mode of time delay of starting shooting, serial ports upgrade command is waited for when DSP starts, if confiscate upgrade command, after time delay a period of time, enter master routine, receive upgrade and then jump to serial ports ROMPaq, weak point is the introduction of extra start-up time, is not suitable for requiring high application scenario start-up time.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of remote upgrade method of DSP program.The program upgrade mark that it utilizes EEPROM to store judges whether to need upgrading, is realized the remote upgrade of program by serial communication.
Realizing the solution that above-mentioned purpose adopts is:
A remote upgrade method for DSP program, described method comprises:
(1) SCIBootLoader module is according to the upgrading judgement symbol position in EEPROM, and judging whether needs upgrading, if need to upgrade, and initialization SCIBootLoader module and reception host computer information, otherwise jump to master routine entrance, upgrading terminates;
(2) CKFA module carries out CSM unblock, if unlock successfully, then and enable auto-baud-detect receive host computer information, and the binary file programming received is entered in FLASH, verify programming result, if unlock unsuccessfully, jump to master routine entrance, upgrading terminates;
(3) host computer coordinates SCIBootLoader module and CKFA module to carry out remote upgrade.
Preferably, described SCIBootLoader module specific works flow process is as follows:
(1-1) enable auto-baud-detect after initialization SCIBootLoader module;
(1-2) wait for that host computer sends character ' a ', after receiving character ' a ', locking baud rate, and respond from serial ports transmission character ' a ';
(1-3) read the character receiving host computer information, if receiving is not 0x08AA, then thinks that remote upgrade transmits error in data, send updating result, jump to master routine and run, terminate upgrading;
If (1-4) receive 0x08AA, then receive the content of CKFA.bin until receive, receive the entry address of rear programming jump to CKFA module.
Preferably, described CKFA module comprises the API of communication kernel and FLASH;
The specific works flow process of described CKFA module is as follows:
(2-1) utilize the password of CKFA to carry out CSM unblock, if unlock unsuccessfully, jump to master routine entrance, upgrading terminates; If unlock successfully, then enable auto-baud-detect;
(2-2) wait-receiving mode host computer sends character ' a ', after receiving character ' a ', relocks baud rate, and responds from serial ports transmission character ' a ';
(2-3) calculate the School Affairs of current FLASH, and send to host computer, wait-receiving mode, the need of erasing FLASH order, if do not need erasing, shows updating result, and programming jump is to master routine entrance, and upgrading terminates;
If need erasing, carry out erase operation to FLASH, erasing terminates rear response host computer;
(2-4) receive host computer send App.bin binary file and programming in FLASH, programming terminate rear calculating FLASH School Affairs, if upgrade successfully, then reset the upgrading judgement symbol position of EEPROM;
(2-5) finally program upgrade result is sent to host computer, upgrading terminates, and programming jump is to master routine entrance.
Preferably, described host computer coordinates SCIBootLoader module and CKFA module to carry out remote upgrade, performs serial ports starting and upgrading, locking baud rate successively, sends CKFA.bin file, relocking baud rate, erasing FLASH and send App.bin file.
Further, described locking baud rate is no more than 38400; Described relocking baud rate is set as 256000.
Preferably, in described FLASH, a reserved Sector stores the method that SCIBootLoader is exclusively used in the remote upgrade of DSP program.
Compared with prior art, the present invention has following beneficial effect:
1. serial communication interface signal is simple, can upgrade, can long-rangely upgrade without the need to the protective housing opening dsp system, have convenient, flexible, realize simple feature, be applicable to the DSP program upgrade in the field such as Industry Control, remote measurement.
2. there is not the extra on time, low to RAM capacity requirement, without power down risk, upgrade reliable and stable.
Accompanying drawing explanation
Fig. 1: DSP program remote upgrading system chart;
The workflow diagram of Fig. 2: SCIBootLoader;
The workflow diagram of Fig. 3: CKFA;
Fig. 4: binary file product process figure;
Fig. 5: upper computer software operating process.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
DSP (digital signal processor) remote update system is made up of DSP and EEPROM, as shown in Figure 1.DSP is connected with I2C bus with eeprom chip 24AA64, only needs two wiring, and control mode is simple, and traffic rate is high.Communication between DSP and PC adopts the MAX3232 chip meeting RS-232 agreement to be connected.
Upgrading after SCIBootLoader is responsible for DSP startup judges and receives CKFA (CommunicationKernelandFLASHAPI) data.In the FLASH of DSP, choose SectorA, write by the Integrated Development Environment CCS of TI the code that start-up mode judges and SCI starts, and download to appointment SectorA by JTAG.
As shown in Figure 2, DSP carries out system initialization after starting to the workflow of SCIBootLoader, reads the upgrading judgement symbol position in EEPROM afterwards, if do not need upgrading, jumps to master routine.If need upgrading, carrying out the initialization of SCI module, enable auto-baud-detect, waiting for that host computer sends character ' a ', when receiving character ' after a ', locking baud rate, and send character from serial ports ' a ' to respond.Read the character received, if receiving is not 0x08AA, then thinks that remote upgrade transmits error in data, send updating result, jump to master routine and run.If receive 0x08AA, receive the content of the CKFA.bin that host computer is sent by serial ports and be stored in RAM, receiving the entry address of rear programming jump to CKFA.
Wherein the data stream format of CKFA.bin is as shown in table 1.Bebinning character is 0x08AA, and reserve bytes is the entry address (32bit) of 128bit, CKFA, is the binary data stream of CKFA program theme afterwards, is finally termination character 0x0000.SCIBootLoader, after receiving termination character, thinks that CKFA.bin transmits complete.
Table 1:CKFA.bin data stream format
CKFA (CommunicationKernelandFLASHAPI) is the API of communication kernel and FLASH, CKFA runs in RAM, the binary file of the AppCode that host computer is sent is received by serial ports, and the binary file programming received is entered in FLASH, programming result is verified.
As shown in Figure 3, first utilize the password of CKFA to carry out CSM (Codesecuritymodule) and unlock, if unlock unsuccessfully, jump to master routine entrance, upgrading terminates the workflow of CKFA.If unlock successfully, then enable auto-baud-detect.Wait-receiving mode host computer relocks baud rate after sending character ' a ', receive character ' a ', and sends character from serial ports ' a ' responds.Calculate the School Affairs of current FLASH, and send to host computer, wait-receiving mode is the need of erasing FLASH order, if do not need erasing, show updating result, programming jump is to master routine entrance.If need erasing, carry out erase operation to FLASH, erasing terminates rear response host computer.Afterwards receive host computer send App.bin binary file and programming in FLASH, programming terminate rear calculating FLASH School Affairs, if upgrade successfully, then reset the program upgrade zone bit of EEPROM.Finally program upgrade result is sent to host computer, upgrading terminates, and programming jump is to master routine entrance.
Flow process from the source file of CKFA to binary file CKFA.bin as shown in Figure 4, source file generates common object file format (COFF) file CKFA.out after the CCS compiler of TI, the format converter tools HEX2000.exe that COFF form provides through TI company, select option-boot ,-sci8 and INTEL form, obtain hex file CKFA.hex, by format converter tools HEX2Bin.exe, the information such as the frame head of hex file, postamble are removed, obtain the binary file CKFA.bin needed.
AppCode is that user function master routine realizes part, is the code realizing user function.Should be noted that when writing chaining command file, AppCode is distributed in other spaces in FLASH except SectorA, and like this when upgrading AppCode program, can not destroy the content of SectorA, SCIBootLoader does not exist the risk that power down is lost.What generate when using CCS to compile AppCode source program is COFF formatted file, needs to convert binary file format to and just can carry out serial ports transmission.
Master routine, after receiving the upgrade command that host computer sends, is rewritten the upgrading zone bit in EEPROM, and is restarted DSP.The binary file product process of AppCode is similar to the binary file product process of CKFA, when using form crossover tool HEX2000.exe, output format is selected to be INTEL form, memwidth is 16, the hex file AppCode.hex of INTEL form can be obtained, obtain binary file AppCode.bin by format converter tools.
The function of host computer coordinates SCIBootLoader and CKFA to carry out remote upgrade by serial ports, perform serial ports starting and upgrading, locking baud rate successively, send CKFA.bin file, relocking baud rate, erasing FLASH and send App.bin file, as shown in Figure 5.Twice locking baud rate is different, and first time locking baud rate is no more than 38400, ensures the correct transmission of CKFA.Relocking baud rate is set in 256000, improves the transmission speed of App.bin.
Finally should be noted that: above embodiment is only for illustration of the technical scheme of the application but not the restriction to its protection domain; although with reference to above-described embodiment to present application has been detailed description; those of ordinary skill in the field are to be understood that: those skilled in the art still can carry out all changes, amendment or equivalent replacement to the embodiment of application after reading the application; but these change, revise or be equal to replacement, all applying within the claims awaited the reply.
Claims (6)
1. a remote upgrade method for DSP program, is characterized in that, described method comprises:
(1) SCIBootLoader module is according to the upgrading judgement symbol position in EEPROM, and judging whether needs upgrading, if need to upgrade, and initialization SCIBootLoader module and reception host computer information, otherwise jump to master routine entrance, upgrading terminates;
(2) CKFA module carries out CSM unblock, if unlock successfully, then enable auto-baud-detect receive host computer information, and the binary file programming received is entered FLASH and verifies programming result, if unlock unsuccessfully, jump to master routine entrance, terminate upgrading;
(3) host computer coordinates described SCIBootLoader module and described CKFA module to carry out remote upgrade.
2. remote upgrade method as claimed in claim 1, it is characterized in that, described SCIBootLoader module work flow process is as follows:
(1-1) enable auto-baud-detect after initialization SCIBootLoader module;
(1-2) after receiving the character ' a ' of host computer transmission, locking baud rate, and respond from serial ports transmission character ' a ';
(1-3) read the character of the host computer information received, if that reception is not 0x08AA, then thinks that remote upgrade transmits error in data, send updating result, jump to master routine and run, terminate to upgrade;
If (1-4) receive 0x08AA, then receive CKFA.bin to complete, receive the entry address of rear programming jump to CKFA module.
3. remote upgrade method as claimed in claim 1, it is characterized in that, described CKFA module comprises the API of communication kernel and FLASH;
The workflow of described CKFA module is as follows:
(2-1) utilize the password of CKFA to carry out CSM unblock, if unlock unsuccessfully, jump to master routine entrance, terminate upgrading; If unlock successfully, then enable auto-baud-detect;
(2-2) after receiving host computer transmission character ' a ', relock baud rate, and respond from serial ports transmission character ' a ';
(2-3) calculate the School Affairs of current FLASH, and send to host computer, wait-receiving mode, the need of erasing FLASH order, if do not need erasing, shows updating result, and programming jump, to master routine entrance, terminates upgrading;
If need erasing, carry out erase operation to FLASH, erasing terminates rear response host computer;
(2-4) receive host computer send App.bin binary file and programming in FLASH, programming terminate rear calculating FLASH School Affairs, if upgrade successfully, then reset the upgrading judgement symbol position of EEPROM;
(2-5) finally program upgrade result is sent to host computer, upgrading terminates, and programming jump is to master routine entrance.
4. remote upgrade method as claimed in claim 1, is characterized in that, described host computer performs serial ports starting and upgrading, locking baud rate successively, sends CKFA.bin file, relocking baud rate, erasing FLASH and send App.bin file.
5. remote upgrade method as claimed in claim 4, it is characterized in that, described locking baud rate is no more than 38400;
Described relocking baud rate is set as 256000.
6. remote upgrade method as claimed in claim 1, is characterized in that, in described FLASH, a reserved Sector stores the method for the remote upgrade for DSP program of SCIBootLoader.
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| CN107800786A (en) * | 2017-10-20 | 2018-03-13 | 南京晓庄学院 | A kind of intelligent terminal remote upgrade breakpoint transmission method |
| CN108170487A (en) * | 2016-12-06 | 2018-06-15 | 比亚迪股份有限公司 | DSP Program programming method, apparatus and vehicle |
| CN109188949A (en) * | 2018-06-28 | 2019-01-11 | 郑州众智科技股份有限公司 | The method that host computer passes through MODBUS protocol remote upgraded electricity generation generator set controller |
| CN109683935A (en) * | 2018-12-25 | 2019-04-26 | 深圳市英威腾电气股份有限公司 | Application program updating method, apparatus, frequency converter and storage medium |
| CN109800007A (en) * | 2018-12-28 | 2019-05-24 | 航天信息股份有限公司 | Dsp chip online upgrading method and device |
| CN109901866A (en) * | 2017-12-07 | 2019-06-18 | 航天科工惯性技术有限公司 | Online upgrading method and rotary steering system for multi-module system |
| CN110769411A (en) * | 2019-10-23 | 2020-02-07 | 厦门四信通信科技有限公司 | Method, device, equipment and system for stably realizing batch OTA (over the air) upgrade of terminal equipment |
| CN111008033A (en) * | 2019-10-30 | 2020-04-14 | 中国航空工业集团公司洛阳电光设备研究所 | Universal DSP (digital signal processor) online upgrading system and upgrading method based on serial port |
| CN111459468A (en) * | 2020-04-09 | 2020-07-28 | 西安现代控制技术研究所 | DSP program on-line upgrading system and method for high-reliability serial port communication |
| CN111522572A (en) * | 2020-04-27 | 2020-08-11 | 湖北三江航天红峰控制有限公司 | Online upgrading method and system for embedded software |
| CN111736882A (en) * | 2020-06-17 | 2020-10-02 | 西安微电子技术研究所 | Remote upgrading method for DSP program |
| CN111857776A (en) * | 2020-07-09 | 2020-10-30 | 天津津航计算技术研究所 | Online upgrading method for application programs of DSP (digital Signal processor) board cards |
| CN112256267A (en) * | 2020-09-10 | 2021-01-22 | 中国航空工业集团公司洛阳电光设备研究所 | Binary file generation method based on CCS software compilation |
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Application publication date: 20151223 |