CN101031037A - Circuit device for repeating on-line programm - Google Patents
Circuit device for repeating on-line programm Download PDFInfo
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- CN101031037A CN101031037A CNA2007100737304A CN200710073730A CN101031037A CN 101031037 A CN101031037 A CN 101031037A CN A2007100737304 A CNA2007100737304 A CN A2007100737304A CN 200710073730 A CN200710073730 A CN 200710073730A CN 101031037 A CN101031037 A CN 101031037A
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Abstract
The invention is used in TV circuit board. The apparatus thereof comprises: an interface board circuit and a TV control chip. Said interface board circuit is used for connecting 9-pin serial port of a computer to the I/O pins of TV control chip, and comprises a level conversion circuit used for converting the level of 9-pin serial port to the level desired by the TV control chip. On said computer there is an on-line updating programming program installed for updating the TV control chip on-line.
Description
Technical field
The present invention relates to a kind of television program refresh circuit device and method, in particular a kind of implement device and method of the repeated online programming of writing, debugging in order to TV set software, the cooperation by computer by serial and software and hardware directly realizes online programming and debugging to television set.
Background technology
Along with development of technology, the realization of increasing television set function will rely on cooperating of software and hardware to realize with the adjustment of image quality, yet the modification of at present a lot of TV set softwares and renewal can only be carried out by off-line, control chip in the circuit need be disassembled, carry out the renewal of software by fever writes.The set-up mode of prior art is not easy to the designer and carries out the debugging of software and the modification of parameter at any time, and IC is loaded and unloaded the damage that is easy to cause IC repeatedly, thereby increases design cost, prolongs the design cycle; Existing debugging acid using method complexity and cost costliness, what be unfavorable for designing, produce carries out fast smoothly.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The purpose of this invention is to provide a kind of circuit arrangement and implementation method that repeats online programming, by being equipped with of computer software and hardware, and the setting of television set control chip, can be by 9 needle serial port transfer of data of computer, carry out being input to after the level conversion corresponding interface of television set through an interface board circuit, send to CPU and carry out reading, upgrading of data, realize the online programming of television set is handled.
Technical scheme of the present invention comprises:
A kind of circuit arrangement that repeats online programming, it is used for a TV set circuit plate, it is characterized in that, also comprises: an interface board circuit and a television set control chip; Described interface board circuit is used to connect 9 needle serial ports of an all-purpose computer and data input, the output connecting pin of described television set control chip, and comprising a level shifting circuit, the level conversion that is used for described all-purpose computer 9 needle serial ports is the required level of television set control chip; Described all-purpose computer is provided with an online programming refresh routine, realizes the online programming of described television set control chip is upgraded by described 9 needle serial ports.
Described circuit arrangement, wherein, described television set control chip adopts the EnME0509 chip.
Described circuit arrangement, wherein, input of the data of described television set control chip and data output connecting pin are arranged on the VGA interface of this television set.
Described circuit arrangement, wherein, described level shifting circuit comprises a 5V voltage-stabiliser tube that connects from described 9 needle serial port pins.
A kind of implementation method that repeats online programming is used for the computer that a may command television set control chip realizes that online programming upgrades, and it may further comprise the steps:
A, between 9 needle serial ports of computer and described television set control chip, an interface board circuit is set, is used for transfer of data and connects and level conversion;
B, between computer and described television set control chip, carry out Handshake Protocol and handle;
C, by computer control each page data of described television set control chip is carried out online programming and upgrade, upgrade this television set control chip that resets after finishing.
Described implementation method, wherein, described television set control chip is EnME0509, and its data are imported and the data output connecting pin is arranged on the VGA interface of described television set.
Described implementation method, wherein, described step B also comprises:
B1, computer terminal send an initial request character, and described television set control chip is loopback one acknowledge character after receiving this initial request character;
B2, described computer terminal send the word string of shaking hands after receiving this acknowledge character, described television set control chip is the return response word string after receiving this word string of shaking hands;
B3, described computer terminal send carriage return character receiving after this replys word string, and enter the online programming refresh routine; Described television set control chip enters more new model of online programming after receiving this carriage return character, wait the online programming update command of described computer terminal.
Described implementation method, wherein, described initial request character and described acknowledge character all are colons.
Described implementation method, wherein, described step C also comprises:
By described computer sending controling instruction, circulation is deleted every page in described television set control chip storage data and write operation.
Described implementation method, wherein, described deletion step comprises:
C1, described computer terminal send the delete command character successively, treat the page, check code, the carriage return character of deleted data, judge whether to receive the deletion return information of television set control chip, and judge whether information is correct; As incorrect, then repeat pre-determined number, and finish the online programming renewal process;
After C2, described television set control chip are received above-mentioned delete instruction,, and correctly return the deletion return information according to whether operating with corresponding page data deletions; If deletion is unsuccessful, pending online programming update command state such as then return;
C3, described computer terminal are after receiving that deletion information is correct, send data write command character, the page number to be written, data, check code to be written successively, and judge whether to receive the return information that writes of television set control chip, and judge whether information is correct; If information is incorrect, then repeat the write operation pre-determined number after, finish the online programming renewal process;
C4, described television set control chip receive above-mentioned write instruction after, the Data Update of the corresponding page is write, and verification, write return information according to whether operating correctly to return; If write unsuccessfully, pending online programming update command state such as then return.
A kind of circuit arrangement and implementation method that repeats online programming provided by the present invention, owing to adopted computer by serial coffret and corresponding software control, and carry out transfer of data by the corresponding interface of television set, made things convenient for the online programming of television set, its implementation structure and technology are simple, are suitable for the large-scale pipeline operation.
Description of drawings
Fig. 1 is the schematic diagram that repeats the circuit arrangement of online programming of the present invention;
Fig. 2 a and Fig. 2 b are respectively the computer terminal of the implementation method that repeats online programming of the present invention and the Handshake Protocol flow chart of television set control chip end;
Fig. 3 is the ISP basic flow sheet of the inventive method;
Fig. 4 deletes and writes schematic flow sheet for the FLASH page of the inventive method;
Fig. 5 is that the television set control chip of the inventive method is carried out schematic flow sheet;
Fig. 6 a and Fig. 6 b are the deletion and the write operation schematic flow sheet of the inventive method television set control chip.
Embodiment
Below in conjunction with accompanying drawing, will illustrate more fully specific embodiments of the invention.
The present invention can repeat the circuit arrangement and the implementation method of online programming, and as shown in Figure 1, its system comprises a computer, operation one manipulative procedure on this computer; The movement Digital Circuit Control chip that television set is set simultaneously is one to have the chip that online programming upgrades ISP (IN SYSTEM PROGRAM) function, as the EnME0509 chip, transfer of data pin RXD, the TXD of this chip are connected respectively on the shell of television set, be set to a predetermined interface, in preferred embodiment of the present invention, this interface is provided with the VGA interface for television set.Because therefore the less use of VGA interface of television set can be connected on the idle pin of VGA, in fact the present invention can be provided with a brand-new interface fully certainly.
Realize the inventive method, must make the employed CPU of TV motherboard circuit of the present invention must support online programming to upgrade ISP (IN SYSTEM PROGRAM); Owing to need deposit the ISP program with certain space, therefore require this segment space of CPU can not carry out the online programming renewal, promptly need guarantee certain ISP program's memory space from chip hardware, could guarantee the safety of ISP program like this, the ISP program can not be wiped free of, modification etc.CPU is connected with the computer communication by serial ports, and the order of its serial communication program receiving computer is carried out then.After computer makes CPU enter the ISP pattern by serial port command, send the right FLASH of control command again and carry out the online programming renewal, every group command comprises that deletion, data write, and sends ISP at last and stops ordering the CPU that resets.
Why the present invention utilizes computer by serial, be because at present TV mostly is 0V and 5V with the serial ports level of CPU, and the computer by serial level is-12V and+12V, therefore only need carry out level conversion by interface circuit gets final product, as shown in Figure 1, communication line between serial ports of computers and the television set VGA interface of the present invention is provided with a level shifting circuit, is arranged on usually on the interface card.Because the rs 232 serial interface signal that the 3rd pin of computer 9 needle serial ports provides is-12V and+12V, thereby to convert the required voltage of CPU to, by delivering to the RXD pin of CPU behind voltage stabilizing circuit and the phase inverter HCl by the voltage-stabiliser tube D1 of a 5V.And deliver to 9 needle serial ports after the rs 232 serial interface signal that the TXD pin of CPU the provides process phase inverter HC2 paraphase.Low level is 0V in this circuit, and high level is provided by the 6th pin of serial ports and the 7th pin and draws voltage, since the driving force of serial ports of computers a little less than, high level can only reach 5 to 6V, draws on process to reach signal voltage-12V that serial ports can discern and+12V behind the voltage.But computer by serial is considered compatibling problem, and its voltage adaptation scope is all bigger, for 0V input, will be identified as end level, is equal to required-12V, and the 5V input is identified as high level and is equal to+12V, so this circuit can be finished the conversion of level.
The phase inverter HC1 and the HC2 of interface card of the present invention can adopt the 74HC05 model, provide power supply by serial ports output, are stabilized in 5V by the 5V voltage-stabiliser tube.Same for the more weak reason of the driving force of serial ports of computers, phase inverter must adopt the 74HC series of CMOS, can not adopt 74LS series.And when being set, serial ports of computers must be noted that the corresponding output pin of computer 9 needle serial ports must be set to+output of 12V voltage.
In interface board circuit of the present invention, also need to be provided with the driving power of an interface board circuit, can use by supplying whole interface board drives after the level conversion from the 4th pin and the 8th pin of described serial ports of computers, as shown in Figure 1, realizing level conversion by a voltage-stabiliser tube D2, is the required voltage of interface board circuit with the voltage transitions of serial ports of computers.
Control chip in the TV set circuit of the present invention can adopt EnME0509, and it is 8 level controllers of 8051 kernels of a standard.Except the timer and interruption outfit of standard 8051, it also has the RAM of 1032Bytes, the PWM output of 7 8Bit, the ADC of 4 6Bit; It is built-in supports the 128K Bytes FLASH of online programming update functions ISP.
The ISP of EnME0509 of the present invention needs software programming to cooperate hardware to realize that the FLASH of 128K is divided into 256 pages or leaves, every page of 512 Byte.Rearmost 2 pages or leaves are used to deposit the ISP program, therefore require these 2 pages of chip can not carry out the online programming renewal.EnME0509 is by serial ports and computer communication, after computer makes EnME0509 enter the ISP pattern by serial port command, send 254 group commands again and 254 pages FLASH is carried out online programming upgrade, every group command comprises that deletion, data write, and sends ISP at last and stops ordering the EnME0509 that resets.
Have three to be used for the ISP function in the ISP register of TV set circuit chip EnME0509 of the present invention, it comprises:
1)CHPCON
Be set to 0x11 and make EnME0509 enter the ISP pattern, but must close all interruptions and house dog before will noting entering ISP.
Be set to the 0x81 EnME0509 (withdrawing from ISP) that resets.
2)ISP_ADDR
The FLASH page address is selected, and value is 0 to 253.
3)ISP_CTRL
Being set to 0x91 is read into the data of the 512Bytes of the FLASH page or leaf selected among the XRAM
(address is 000 to 1FF).
Be set to the FLASH page or leaf that 0x92 is written to the data of XRAM selection.
Be set to the data deletion of 0x94 with the FLASH page or leaf of selection.
The operation of all ISP of EnME0509 is all finished by above three registers:
1) enters the ISP pattern
EA=0; WDTC=0; CHPCON=0x11; //EA=0 closes interruption,
WDTC=0 closes house dog
2) select the FLASH page or leaf
ISP_ADDR＝n；
3) FLASH data deletion
ISP_CTRL＝0x94；
4) FLASH page or leaf NULLCHECK
Read the FLASH page data of selection with ISP_CTRL=0x91, check whether these 512 Byte data all are FF.
5) data write FLASH
ISP_CTRL＝0x92；
6) FLASH data check
Read the FLASH page data of selection with ISP_CTRL=0x91, calculate these 512 Byte data verification and, compare with correct verification and data
7) withdraw from ISP pattern (CPU will be reset)
CHPCON＝0x81；
5, EnME0509 enters the Handshake Protocol of ISP pattern
Because the ISP feature operation of apparatus of the present invention and method has destructiveness, if enter the ISP pattern too easily, in case misoperation enters the ISP pattern, may destroy normal program, software can't normally be moved cause deadlock.For preventing this situation, designed Handshake Protocol and confirmed entering the ISP pattern, shown in Fig. 2 a and Fig. 2 b, send a specific request character by computer terminal, as " colon ", then with regard to the wait acknowledge character; The control chip end of television set just sends acknowledge character to computer terminal when receiving the request character, for example acknowledge character also is a colon; If computer terminal is received the colon of replying loopback, promptly send the word string of shaking hands of Handshake Protocol, the word string Key1 of 5 characters for example, the control chip end of television set is return response word string Key2 after receiving this word string Key1; After computer terminal receives and replys word string Key2, can send a carriage return character OxOD, expression ISP program can begin, and starts the ISP process immediately.The control chip end of television set promptly enters the ISP pattern after receiving this carriage return character, and circulation carries out the associated memory space of ISP order with the television set control chip, and the correlation space except that the memory space of ISP program itself is upgraded.
In apparatus of the present invention and the method, computer terminal software is after entering the ISP process, the process that its ISP online programming upgrades comprises: from the 0th page to 253 pages circulations, do deletion and write operation to every page, and check the operation correctness information return, if it is wrong, repetitive operation 3 times is up to success, continuous three mistakes then withdraw from, process step is provided with as shown in Figure 3 since the 0th page, deletion television set control chip current page FLASH data, and write the current page FLASH data that transmit from computer, and page count added one, until judging whether this number of pages arrives 254 pages, stop circulation, the order of ISP pattern is withdrawed from transmission, and withdraws from the ISP process.
In said procedure, deletion current page FLASH data see also shown in Figure 4 with the idiographic flow that writes current page FLASH data, behind the Handshake Protocol of realizing as shown in Figure 2, send the delete command character by computer terminal control, and the transmission page number and delete instructions such as check code, carriage return character, the control chip end of waiting for television set returns the deletion return messages, if fail to finish deletion action on control chip, then can not feed back correct return information; Computer terminal does not return correct information, just repeats to send above-mentioned instruction, repeats pre-determined number as 3 times, if can not receive the correct information that returns, then stops the ISP process.
If receive the correct information that returns, then then send data write command character, the more new data on the transmission page number, this page etc. writes instruction, and sends check code, waits for that then the control chip end of television set feeds back the correct return information that writes; The write operation if the television set control chip can not be finished then can not be fed back correct information, and computer terminal repeats the above-mentioned process of transmitting that writes data, reaches pre-determined number as 3 times, then finishes this ISP process.If the control chip of television set executes write operation, then to computer terminal feedback return information, computer terminal is received the operation correct information that this returns, and continues to begin to descending the ISP process of one page.
Television set control chip in the inventive method, as the EnME0509 chip in the present embodiment, after corresponding update software operation entered the ISP command-execution loop, the command character that receiving computer is sent was carried out corresponding operation according to command character, and checked operation result, operation result information is sent back to computer, its implementation as shown in Figure 5, if execute the ISP renewal process, then withdraw from the ISP pattern, and carry out the EnME0509 reseting procedure.
Wherein, the idiographic flow of carrying out delete command shown in Fig. 6 a, process corresponding shown in Figure 4, it comprises: judge whether to have received page number data, check code data, carriage return character etc., if receive and verify correct, then select corresponding FLASH page or leaf,, and carry out a page NULLCHECK this page data deletion according to the page number data of receiving, if NULLCHECK is correct, the deletion return information that then return is correct, otherwise, the deletion return information of return mistake; Return the execution circulation of ISP order at last.
Television set control chip of the present invention is carried out the idiographic flow of write command shown in Fig. 6 b, with reference to process shown in Figure 4, it specifically comprises: judge whether to receive page number data, be 512k, check code to renewal size of data that should page or leaf, and whether verification is correct, if page number data correct then that basis is received are selected corresponding FLASH page or leaf, with the correspondence received more new data write this page or leaf, and the FLASH data that write are carried out verification, if it is correct, then return is correct writes return information, otherwise the return mistake write return information; Return the ISP command-execution loop at last.
Must explanation be, television set control chip EnME0509 can wait for 0.5 second to 1 second time in the embodiments of the invention when the character that the receiving computer end is sent, at this moment between in receive that character then continues, otherwise think and do not receive character.For easy to use, computer terminal software can write down the date and time of this document when the read-in programme data file, and whether automatic inspection this document upgrades (for example recompilating) at every turn before carrying out the ISP operation, if this document upgrades, reads in this document automatically again.
The inventive method is in order to accelerate the ISP process, at computer terminal software when carrying out every page of FLASH write operation, can check whether this page data all is that (procedure quantity is more little for FF, this situation is many more, represent this page blank), if, as long as this page FLASH is directly carried out deletion action, do not need to carry out again write operation, so just saved the time of transmitting 512 data by serial ports yet.
The present invention can repeat the circuit arrangement and the implementation method of online programming and rationally use the wide characteristic of serial ports of computers input voltage identification range, and only needing just can communicating by letter by serial ports and VGA terminal realization computer and TV SKD CPU by simple level conversion and voltage stabilizing setting.And the method is to software change, debugging without limits, can repetitive operation and to hardware without any damage, so also made things convenient for the maintenance and the upgrading of product later stage software.
Simultaneously, more be provided with the Handshake Protocol of ISP pattern on the new technological process at computer, because having destructiveness, the ISP operation (can not finish in case upgrade, cause the damage of chip program easily), if enter the ISP pattern too easily, in case misoperation enters the ISP pattern, may destroy normal program, software can't normally be moved cause deadlock.Therefore confirm entering the ISP pattern by Handshake Protocol, can not carry out misoperation, cause unnecessary loss the data of CPU with regard to having guaranteed.
The present invention can repeat the circuit arrangement and the implementation method of online programming, be applied in the television technologies, owing to adopted computer by serial coffret and corresponding software control, and carry out transfer of data by the corresponding interface of television set, made things convenient for the online programming of television set, its implementation structure and technology are simple, are suitable for the large-scale pipeline operation.
Should be understood that above-mentioned description at preferred embodiment of the present invention is comparatively detailed and concrete, can not therefore be interpreted as the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.
Claims (9)
1, a kind of circuit arrangement that repeats online programming, it is used for a TV set circuit plate, it is characterized in that, also comprises: an interface board circuit and a television set control chip; Described interface board circuit is used to connect 9 needle serial ports of an all-purpose computer and data input, the output connecting pin of described television set control chip, and comprising a level shifting circuit, the level conversion that is used for described all-purpose computer 9 needle serial ports is the required level of television set control chip; Described all-purpose computer is provided with an online programming refresh routine, realizes the online programming of described television set control chip is upgraded by described 9 needle serial ports.2, circuit arrangement according to claim 1 is characterized in that, described television set control chip adopts the EnME0509 chip.
3, circuit arrangement according to claim 2 is characterized in that, the data input and the data output connecting pin of described television set control chip are arranged on the VGA interface of this television set.
4, circuit arrangement according to claim 1 is characterized in that, described level shifting circuit comprises a 5V voltage-stabiliser tube that connects from described 9 needle serial port pins.
5, a kind of implementation method that repeats online programming is used for the computer that a may command television set control chip realizes that online programming upgrades, and it may further comprise the steps:
A, between 9 needle serial ports of computer and described television set control chip, an interface board circuit is set, is used for transfer of data and connects and level conversion;
B, between computer and described television set control chip, carry out Handshake Protocol and handle;
C, by computer control each page data of described television set control chip is carried out online programming and upgrade, upgrade this television set control chip that resets after finishing.
6, implementation method according to claim 5 is characterized in that, described television set control chip is EnME0509, and its data are imported and the data output connecting pin is arranged on the VGA interface of described television set.
7, implementation method according to claim 5 is characterized in that, described step B also comprises:
B1, computer terminal send an initial request character, and described television set control chip is loopback one acknowledge character after receiving this initial request character;
B2, described computer terminal send the word string of shaking hands after receiving this acknowledge character, described television set control chip is the return response word string after receiving this word string of shaking hands;
B3, described computer terminal send carriage return character receiving after this replys word string, and enter the online programming refresh routine; Described television set control chip enters more new model of online programming after receiving this carriage return character, wait the online programming update command of described computer terminal.
8, implementation method according to claim 7 is characterized in that, described initial request character and described acknowledge character all are colons.
9, implementation method according to claim 5 is characterized in that, described step C also comprises:
By described computer sending controling instruction, circulation is deleted every page in described television set control chip storage data and write operation.
10, implementation method according to claim 9 is characterized in that, described deletion step comprises:
C1, described computer terminal send the delete command character successively, treat the page, check code, the carriage return character of deleted data, judge whether to receive the deletion return information of television set control chip, and judge whether information is correct; As incorrect, then repeat pre-determined number, and finish the online programming renewal process;
After C2, described television set control chip are received above-mentioned delete instruction,, and correctly return the deletion return information according to whether operating with corresponding page data deletions; If deletion is unsuccessful, pending online programming update command state such as then return;
C3, described computer terminal are after receiving that deletion information is correct, send data write command character, the page number to be written, data, check code to be written successively, and judge whether to receive the return information that writes of television set control chip, and judge whether information is correct; If information is incorrect, then repeat the write operation pre-determined number after, finish the online programming renewal process;
C4, described television set control chip receive above-mentioned write instruction after, the Data Update of the corresponding page is write, and verification, write return information according to whether operating correctly to return; If write unsuccessfully, pending online programming update command state such as then return.
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| CN200710073730A CN100583961C (en) | 2007-03-28 | 2007-03-28 | Circuit device for repeating on-line programming and implement method |
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| CN200710073730A CN100583961C (en) | 2007-03-28 | 2007-03-28 | Circuit device for repeating on-line programming and implement method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425943A (en) * | 2017-08-31 | 2017-12-01 | 广州视源电子科技股份有限公司 | Packet data transmission method, apparatus, electronic equipment and computer-readable storage medium |
| CN108139917A (en) * | 2015-08-20 | 2018-06-08 | 美光科技公司 | The solid-state storage device quickly guided from NAND media |
| CN108733396A (en) * | 2018-05-25 | 2018-11-02 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The on-line loaded method of 8 High Performance SCM program softwares |
-
2007
- 2007-03-28 CN CN200710073730A patent/CN100583961C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108139917A (en) * | 2015-08-20 | 2018-06-08 | 美光科技公司 | The solid-state storage device quickly guided from NAND media |
| US10956065B2 (en) | 2015-08-20 | 2021-03-23 | Micron Technology, Inc. | Solid state storage device with quick boot from NAND media |
| US11287990B2 (en) | 2015-08-20 | 2022-03-29 | Micron Technology, Inc. | Solid state storage device with quick boot from NAND media |
| CN107425943A (en) * | 2017-08-31 | 2017-12-01 | 广州视源电子科技股份有限公司 | Packet data transmission method, apparatus, electronic equipment and computer-readable storage medium |
| CN108733396A (en) * | 2018-05-25 | 2018-11-02 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The on-line loaded method of 8 High Performance SCM program softwares |
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