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Digah House Company's Custom Kitchen Design

Digah House Company's Custom Kitchen Design

2021-09-04
Digah Company
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On this page, you can find quality content focused on custom kitchen design. You can also get the latest products and articles that are related to custom kitchen design for free. If you have any questions or want to get more information on custom kitchen design, please feel free to contact us.

Guangzhou House Empire Construction&Furnishing Co.,Ltd embraces innovation as a core value of custom kitchen design. Before the product is launched to market, our designers carry out an investigation into the feasibility of innovation. The product has been repeatedly tested to meet global standards after the R&D department adjusts its functions according to the market demands. The adjustment is so successful that the product wins great praises.Digah Company is one of the most trusted trademarks in this field globally. For years, it has stood for competence, quality, and trust. By solving customer problems one after another, Digah Company creates product value while gaining customer recognition and market reputation. The unanimous praise of these products has assisted us in acquiring a wide clientele around the world.Quick response to customer's request is the guideline of service at Digah Company. Thus, we build up a service team capable of answering questions about delivery, customization, packaging, and warranty of custom kitchen design.
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Problems of Phased Array Ground Penetrating Radar Detection System
Problems of Phased Array Ground Penetrating Radar Detection System
Although GPR has been widely used in hydrology, engineering, environment and other fields, many basic theoretical and technical problems have not been fundamentally solved, so the real advantages of GPR have not been brought into full play.The main problems existing in GPR technology include:1) The detection depth is shallow, and the contradiction between detection depth and resolution cannot be overcome. Increasing detection depth means sacrificing detection resolution;2) Multiple spread and other clutter jamming are serious, and there has been no good elimination method, which exists in radars at home and abroad;3) The influence of medium unevenness is great and can not be eliminated, resulting in difficulty in obtaining necessary velocity data;4) The data collection method of single sending and single receiving can provide limited information for post-processing and interpretation.The above problems are fatal defects for GPR. Although many geophysicists, electromagnetic experts and geophysical workers have done a lot of research and improvement on radar antenna design, signal processing and underground target imaging, these works are only partial modifications to the existing GPR system. In order to develop GPR technology, we must update our ideas and solve the problems from the fundamental principle.In view of this situation, experts proposed to develop a new GPR system - phased array GPR detection system in 1999.The basic research idea is to replace the current monopole radar antenna with the phased array radar antenna by using the relatively mature military phased array radar technology. Its purpose is to gather the electromagnetic wave into a narrow beam to transmit underground (or detection object) through the phased array technology, and receive the radar echo signal reflected by the target by using the multi-channel acquisition technology, The advanced data processing is carried out, and finally the three-dimensional image of the internal structure of the detection object is given.Development prospect of ground penetrating radar technologyIt is worth noting that at present, similar products have appeared in the market, such as RIS antenna array series of a company, but these products simply combine multiple monopole antennas into array antennas, which is essentially different from the idea of phased array ground penetrating radar.Because the phased array radar converges the electromagnetic wave into a narrow beam by controlling the phase delay of each channel, the energy is concentrated and the wave front diffusion is small. Therefore, the detection depth of the phased array radar is much larger under the condition of the same frequency and transmission power; On the contrary, under the same detection depth, phased array radar can improve the transmission power, so its resolution is much higher than the existing radar. In addition, since the spherical wave transmission is changed to beam transmission, the influence of medium heterogeneity is much smaller.Secondly, the phased array radar works in a continuous scanning mode and can scan in multiple directions. Therefore, the amount of information is much larger than that of the existing ground penetrating radar. For some special detection work, such as the quality detection of embankment cut-off wall, its role is unmatched by the existing ground penetrating radar (monopole antenna radar can not detect the joints, forks and other defects of embankment cut-off wall at all).Because phased array radar is a multi-channel received signal, multi-channel superposition can be carried out, just like the multiple coverage technology of reflection seismic exploration. Therefore, multiple interference can be greatly eliminated, which is difficult for existing radars. The antenna of high frequency (600mhz-1ghz) phased array ground penetrating radar can be made smaller, and its advantages are unmatched by the existing ground penetrating radar in shallow detection.At present, the system prototype has been completed. The carrier free pulse working system with center frequency of 900MHz is adopted, and the transmitting and receiving antennas are separated. 16 (4 × 4) Transmit channel forming, beam aggregation and scanning 16 (4) × 4) The channel receives the echo, and the optional scanning angles are - 36 °, - 24 °, - 12 °, 0 °, 12 °, 24 ° and 36 °.The software part of the system has rich data processing functions. The main conventional processing includes filtering, gain adjustment, static and dynamic correction, deconvolution, complex signal analysis, time-frequency analysis, etc., and multi-channel data processing, such as velocity analysis, superposition technology, coherence analysis technology, array signal processing, etc. And weak signal extraction, target automatic recognition and inversion interpretation under various clutter interference. A large number of field experiments on concrete detection in Yichang Three Gorges dam are carried out. The experimental results show that the spotlight scanning function of phased array radar has been realized, the penetration depth is greater than 1.5m and the resolution is higher than that of ordinary radar.Editing: hfy
About How Much Would It Cost for Audio/video System Installation in a Car?
About How Much Would It Cost for Audio/video System Installation in a Car?
I would recommend a small privately owned shop that has been around for more than 5 years. You can not haggle the larger shops on install price. Standard prices for installation in the Chattanooga area are: speakers $50/pair Subs $25 each Amplifier $75 Visor & headrest monitors $150 each So you would be looking at about $900, you can talk a small shop into doing everything for around $750. Prices are alot higher in bigger cities. You are probably looking at 8-10 hours labor for one man. Expect to leave your car for 2 days.1. How to hide audio, video or images at gallery? [duplicate]You find a possible solution in many posts around here -- if you know what to look for, that is...Responsible for files turning up in the gallery etc. is the media-scanner, so you have to keep that one from processing the directories you want to ommit. The usual approach for this is placing a file named .nomedia (note the starting dot) into all directories you want to exclude (in your case, the ones containing your audio books). Simply put, this tells the media-scanner: "No media here, just skip this folder".2. its only audio and no video whyyyy ?avc.. hm, I dont know but it happened the same to me once, i think its because its an avc3. How can I find exact delay in badly synced audio and video streams in a media container?Do you know what a clapper is? It's an old device used in movie making and looks like this:This is used by the editor to sync the video and audio together. You need this because there is nothing about audio and video streams that really allow a computer to work out how out of sync they are.Your best course of action is to work out why your recording is going out of sync. It sounds like your computer might be underpowered (conjecture as I do not know how powerful your computer is). If you can not solve the syncing problem, then use a clapper (or make one) and then trial and error your way into syncing it back up.Of course this only helps with fixed sync issues, if you have progressive sync issues then you can use the time signature to resync the streams and this is something the computer can help you with. Is suspect that's what ffmpeg is trying to do4. What is the best way to clean the outside of audio/video cablesWhen I was a a corporate photo/video shooter I found the "desk and office cleaner" everyone had worked pretty well with paper towels. Now that I shoot in the third world, it is Lysol wipes when i get back to the studio. And it is terrifying how many it takes until they come out clean.5. How do I connect a Creative 5.1 speaker system with 3 x 3.5mm jacks to a TV with audio video RCA output?You can create your own RCA to 3.5mm jack adapters or buy them from the local electronics shop. If you explain them what you want they should be able to create the cable for you. Just keep in mind that you are only going to get the Left and Right channels as that is all your TV can output. You will also need to figure out which of the 3 3.5mm jacks receives the Left and Right channels and connect those to the adapter6. what is this called when it has multiple audio video cable ports?AV switcher7. Audio / Video Options disabled in Pidgin when using Yahoo Voice VideoFrom Pidgin's FAQ:Yahoo uses its own protocol, so the answer to your question is that, unfortunately, you can not enable Yahoo voice and video chat with Pidgin for the simple reason that it's not implemented for now8. is there a different hdmi cable for audio and video or are they the same?HDMI cables carry both digital audio and digital video together. Because of this and since I have never seen "Audio HDMI" and "Video HDMI" cables My answer to your question would be: No there is not a different cable and Yes they are the same.9. (Preferably rare) Audio/Video recordings of famous mathematicians?Timothy Gowers here on youtube lecturing a talk on: The Importance of Mathematics
A Game Made Almost Entirely of Led Lights? It's Addictive, and It's at Indiecade
A Game Made Almost Entirely of Led Lights? It's Addictive, and It's at Indiecade
IndieCade can be overwhelming. The Culver City game festival, which began Friday and runs through Sunday evening, boasts more than 200titles. Dedicated to showcasing below-the-radar designers, IndieCade represents what's next—and what's adventurous —in gaming.A core thread this year is intimacy. Games like "Cibele," "Apartment: A Separated Place," "Stellar Smooch" and "Consentacle" capture various points of romantic relationships, from the first kiss to the aftermath of a breakup.There's more. IndieCade isn't limited to video games. There are board games, virtual reality games and even kid-friendly playground games. Some are borderline art installations. All take risks.SIGN UP for the free Indie Focus movies newsletter >>There's a game called "&maybetheywontkillyou," which is live action and explores the experience of being poor and black in America, and there's a virtual reality game titled "Job Simulator," in which robots of the future tryto simulate the work experience. And speaking of robots, on Saturday night, players can sample "Maze of Heart," a motion-sensor game in which a robot needs a soul.You can't see it all, but Hero Complex was on the IndieCade scene on Friday, and here are a few of the games that made an impression."Oxenfree." A group of teenagers iscamping on a mysterious island. Supernatural occurrencesare channeled via a radio. There's a rift in time and maybe some ghosts. All signs point to this being a horror game, but a short demo of "Oxenfree" felt more magical than scary. More importantly, it felt honest, as the dialog-heavy game is conversational rather than action-driven.Whilea young teenagegirl named Alex was exploring a cave she definitely should not have been inside, the player could direct her to be fearful or brave, humorousor anxious. Or maybe it was all a dream? The characters, after all, did eat some brownies with questionable ingredients. No, Alex was definitely talking to a triangle that materialized in the sky, but this mystery story sure felt dreamlike."We really always tried to hit this tone that's as if you took 'Freaks & Geeks' and married it with 'Poltergeist,' " saidAdam Hines, co-founder of Night School Studios. "So you get the kind of real funny drama of kids in high school just dealing with their own issues, but then at the same time, you have these supernatural elements that will come into play and disrupt things. But we didn't want it to be gory. We wanted a sense of wonder and play.""Line Wobbler." Games like "Line Wobbler"are a primary reason to go to IndieCade. You may never get a chance to play it again. There's a story to "Line Wobbler" (you're apparently a character exploring a dungeon), but forget all of that because what will grab your eye is the fact that "Line Wobbler" is set entirely on a strip of LED lights.And the controller? It's made froma door stopper.I didn't get to play "Line Wobbler." I didn't want to interruptthe pack of kids who were clearly in awe of a game in which a green dot travels up a wall to take on red, purple and yellow dots. If it didn't cost a few hundred dollars to make—and if thedoor stopperwasn't so fragile—creatorRobin Baumgarten may have the next great bar game on his hands. As it stands, the game is destined to be shown only at events, museum exhibits or festivals like Burning Man."People, especially kids, seem to be really gripped by this game. It's really fascinating," Baumgarten said.Not bad for a game that's basically red and green lights."It's actually very tricky to convey an idea of what things are in an one-dimensional space," Baumgarten said. "You have no graphics. That's why the colors are what they are: Green is good; red is bad. It's a very traditional color set. I have ideas to come up with more game mechanics, but that would make it harder to line. Like, what does blue mean? So I've kept it to very few components.""Fabulous Beasts."Picture the popular stacking game "Jenga." Now imagine "Jenga" with animals instead of blocks. Also, imaginethat "Jenga" can interact with your iPod and that each block stacked brings to a life a digital environment that's influencing your next move. Imagine said digital environment can be changed as the tower is built. Place the right combinations of pieces, for instance, and a bear can become a bear-fish.Welcome to "Fabulous Beasts," a video/table-top game hybridthat completely reinvents the game of balance. At first glance, this is a simple stacking game for children, but looks are deceiving. "Fabulous Beasts" comes with a weighted stand that ensures figuresare placed properly and requires that each item—some in the shape of animals, some in the shape of natural elements —be scanned into the iPod before stacking.It allows for essentially two games in one. There's the core game of buildinga balanced tower, but each little totemis part of a greater ecosystem. If there are too many elements of one type, for instance, a bird may go extinct, and require the player shift course and potentially use figuresthat are not the best fit.The result is a game that's inviting to look at —tiny figurines in the shapes of sharks and plantsare boldly colored and simple to handle —and has a surprisingdepth of strategy. It's also tense. Occasionally, the iPad will launch a timer, requiring that a piece be balanced within a few seconds."There's a lovely theater about a balancing game," developer Alex Fleetwood said. "There's this idea that you have to create a balanced world, physically and digitally. It's fragile. Things can collapse without warning. There's something about that that resonates with me right now."Right now, a festival like IndieCade is the only place to see it. "Fabulous Beasts" goes to crowdfunding site Kickstarter early next year."Nevermind.""Nevermind" is a psychological horror game that's ultimately designed to help players deal with stress. By wearing optional biofeedback technology—tools, for instance, that can measure your heart rate —the game universe will change. I struggled with onepuzzlebecause I was simply too tense. I needed to relax for the game world to open up before me.Out now for home computers and coming soon to the Xbox One, "Nevermind" follows a physician who is able to enter the minds of patients. In a demo, I wandered a creepy house. It was moody and a little frightening. The screen willsometimes flickerblood-red, and the ghosts —or memories, rather —of an abusive relationship haunt the surroundings. We hear of old fights, of neglect, and attempt to see how the sins of a parent forever scarred a child."We're dealing with narratives around PTSD and psychological trauma," creator Erin Reynolds said. "We really wanted to represent what it's like inside the subconscious mind of people who are struggling with trauma and represent that in a way that's artistically, abstractly accurate, if that makes sense."Rather than scares, the game emphasizes mental challenges. I wandered the house looking for memories, some in the form of broken puzzle pieces, others in the shape of fridge magnets. The biggest challenge was getting through at a relaxed pace, and Reynolds says that's the point."When you play with the biofeedback sensor, which is completely optional, the game will become more difficult, more punishing as you start to experience feelings of stress or anxiety. Not only is it cool, but it's to help players become more mindful of what sensations they feel when they get stressed. ... We reward the player for calming down by making the game easier.""Donut County." Can a simple game with alligator people and one giant hole in the ground say big things about class struggles and gentrification? "Donut County"thinks so."Donut Country" is silly. The game essentially involves directing a hole to swallowthe world around it. The goal is to clear the screen, to wipe out animals, homes, cars or whatever is needed. Influencedby playful games of physics such as "Katamari Damacy," one travels around a cartoon-version of Los Angeles and swallows whole everything its sight. No, it's not about how our city could suddenly fall into the ocean in the wake of a giant earthquake."Donut County" is about one family, and how the world around them becomes consumed and regurgitated in the name of progress. DesignerBen Espositosaid the game was partly inspired by working in Culver City, and seeing mom-and-pop doughnut shops give way to fancier establishments. The shop in thegame is based loosely on Randy's Donuts."It's for kids," Espositosaid, "but there is stuff for people who want to have some sort of subtext to it."As for the subtext?"This is a game about gentrification in L.A. told through donuts," Esposito said. "It takes place effectively at Randy's Donuts, and you see this hole open up and you see the community change over time and people getting erased. That's the super-high concept version."IndieCadeWhat: A festival dedicated to independent gamesWhen:9:30 a.m.-11 p.m. Saturday, 9:30 a.m.-6 p.m. SundayWhere: 9300 Culver Blvd., Culver CityPrice: Day passes, $30; Saturday night pass, $20Info: www.indiecade.com
Description of Electric Wrench Control Board of Induction Less DC Brushless Motor
Description of Electric Wrench Control Board of Induction Less DC Brushless Motor
Shenzhen chuangkeweixin Electronics Co., Ltd. focuses on the research and development of Brushless DC motor drive chips and solutions. The products are mainly used in automotive electronics, water pumps, vacuum cleaners, electric tools, fans, fans, etc. with rich R & D strength, we provide customers with cost-effective brushless DC motor drive chips and supporting complete solutions. We will uphold the management concept of "continuous innovation, integrity and mutual benefit" to win more customers' trust and affirmation, and jointly operate a long-term cooperation on a win-win basis.The following describes the brushless control board of electric wrench developed and designed by our company:1、 Circuit parametersInput voltage: 15-21v;Output current: 20A;Overcurrent protection: 35A;Applicable motor: inductive and non inductive motor driveFeatures: three gear voltage indication, three gear speed regulation, power feedback, forward and reverse selection, reverse light load self-stop, overcurrent protection and over temperature protectionProtection and undervoltage protection2、 Interface descriptionThe model of speed regulating switch tested by this product is jc15-2a;The speed regulating switch interface tested by this product is sh1.0-8, 1.0mm spacing 8pin interface line;3、 Power feedback function descriptionThe control board integrates the power feedback function, which can prolong the battery life; Specifically, in the process of motor rotation, release the speed regulating switch, and the motor continues to rotate due to inertia. At this time, the motor is equivalent to a generator, and the power generated is fed back to the battery for charging.Note: because the control board has the power feedback function, the control board can only be used in battery powered products, and the battery terminal cannot be connected with the reverse diode.4、 Battery level indication descriptionThe battery voltage is indicated in three gears. When the speed regulating switch is pressed, the indicator light turns on for 3 seconds and then turns off.When the battery voltage is > 22V, the power 3 indicator flashes. This state is overvoltage protection. The motor does not work and returns to the standby state.22V > when the battery voltage is ≥ 18.5v, the three power indicator lights are on;18.5v > when the battery voltage is ≥ 17V, the indicator lights of power 1 and power 2 are always on, and the indicator light of power 3 is off;17V > when the battery voltage is ≥ 15V, the power 1 indicator is always on, and the power 2 and power 3 indicators are off;When the pool voltage is less than 15V, the power 1 indicator flashes. This state is undervoltage protection. The motor does not work and returns to the standby state. 5、 Battery power protection Description: the battery voltage is not detected in the standby state. The speed regulating switch is pressed to trigger the power circuit and detect the battery voltage. When the battery voltage is lower than 15V, it will return to the standby state, the driving board will not act, and the low-voltage undervoltage protection; When the battery voltage is higher than 22V, it will return to the standby state, the drive board will not act, and overvoltage protection will be provided. 6、 Overtemperature protection description the control board sets the overtemperature protection function of the power tube. When the temperature of the on-board power tube exceeds 80, the power 2 indicator flashes, the motor does not work, and enters the overtemperature protection state. When the temperature of the on-board power tube is lower than 70, the control board releases the temperature protection and can work normally. When the power 2 indicator light flashes rapidly, the motor does not work, indicating that the on-board temperature sensor is faulty (short circuit or open circuit). VII. Overcurrent protection description the control board is set with 20A current limiting function. Under normal operation, the limiting current is less than 20A. When the current exceeds 35A, the motor stops working and enters overcurrent protection. Release the overcurrent protection after releasing the speed regulating switch, and the control board is in normal standby state. 8、 Reverse auto stop selection Description: turn the direction dial of the switch to the reverse direction. Under the power on state, press the key 1 for a long time within 10 seconds to select the reverse auto stop mode, and the reverse auto stop indicator lights up; Each time you press and hold the key, it will be selected in the two modes of releasing the reverse automatic stop and reverse automatic stop. Note: the reverse auto stop function can be set only when the forward and reverse paddle switch is in the reverse position, and it can not be set in the standby mode. Note: when reversing the self-stop mode, the rotation will continue only when the motor torque reaches a certain value. If the torque is less than a certain value (screw loosening), the rotation will stop. When reversing the automatic stop mode, when the product idles, it will stop immediately after turning, which is a normal function. 9、 The function memory description of three speed regulation gears is divided into high, medium and low speed settings. Press the speed regulation switch to indicate the last set gear. Release the speed regulation switch, and then press the key to select the speed regulation gear within 10 seconds. After each press of the key, it will be selected in three modes of high, medium and low, and the corresponding indicator light will be on. Speed of gear 1 (7500 RPM), speed of gear 2 (13000 RPM) and speed of gear 3 (20000 RPM) Note: the above speed tests the speed of the motor body when the battery voltage is 20V. The speed of motors of different models may be different. 10. Description of LED lamp output  When the speed regulation switch is pressed, the LED lamp is on. After releasing the speed regulation switch, there is no operation within 10 seconds, and the LED lamp goes out and enters the standby state. Shenzhen chuangkeweixin Electronics Co., Ltd. has recently produced the most popular brushless vacuum cleaner control board and submersible pump control board in the market. At the same time, it also undertakes all kinds of customized three-phase DC brushless motor control boards. If you have this demand, you are welcome to consult.
Design of Flash Paging Secondary Boot Program Based on DM642
Design of Flash Paging Secondary Boot Program Based on DM642
Design of flash paging secondary boot program based on DM6420 Introduction TMS320DM642 is a high-performance digital multimedia processor introduced by TI company. It has two-level memory, high-speed buffer and ultra long instruction word structure. Its advantages of fast operation speed, small volume and low power consumption make it widely used in the field of multimedia processing. The application system based on flash boot DM642 is developed. After the system is powered on, the automatic boot mechanism of the system automatically loads the application program in flash into the on-chip RAM to run. However, due to the automatic boot mechanism, only 1 KB code in off chip flah can be loaded into RAM. This requires the development of a boot program that can load all applications, that is, a secondary boot program.1. Boot mode of DM642 DM642 has three main boot modes: (1) Do not load. The CPU directly starts executing the instructions in the memory at address 0. If the memory here is SDRAM, the CPU will hang first until SDRAM initialization is completed. (2) ROM loading. The 1 KB program located in the ROM of the external CE1 space is first moved to address 0 through DMA / EDMA. Although the loading process starts only after the chip is released from the reset signal, when the chip is still in reset, it begins to prepare for the above transmission. After the transmission is completed, the CPU exits the reset state and starts executing the instruction at address 0. The program storage format in ROM shall be consistent with the endpoint mode of the chip. (3) Host load. The core CPU stays in the reset state, and the rest of the chip remains normal. The external host initializes the storage space of the CPU through the host interface, including the on-chip configuration register. After all initialization work is completed, write "1" to dspint of interface control register to end boot. After the CPU exits the reset state, the instruction is executed from address 0. In the application system based on DM642, the boot mode of ROM loading is mainly adopted, and the application program is stored in flash through external flash chip. The application program still exists after the system is powered off, so that the system can run offline. Moreover, with the help of secondary boot program, the development of large-scale application based on DM642 will be more convenient and flexible.2. Connection between DM642 and flash In this paper, the tms320dm642agdk of TI company is used for DM642, and the am29lv033c of AMD company is used for flash. The working clock of TMS320DM642 can reach 720 MHz and the processing performance can reach 5760 MIPs. It accesses the off chip memory through the external memory interface (EMIF). The EMIF interface is divided into four spaces, namely ce0 Ce3. Flash is mapped to CE1 space, and 8-bit ROM loading mode is adopted when power on. Am29lv033c is a 4 M & times; 8 B, 3 V single supply nonvolatile memory. CE1 subspace is configured as an 8-bit asynchronous static memory interface connected to flash. Since there are only 20 external address buses of DM642, the maximum addressing range of CE1 is 1m & times; 8 b。 CE1 only allocates the first half of the addressing space to flash and the second half to other resources, that is, the maximum addressable range is 512k × 8 b。 In order to address all the space of flash, the flash can be paged and managed. The flash is divided into 8 pages, and the page selection is controlled by the page address register located in CPLD through PA19, PA20 and PA21. The connection diagram between DM642 and flash is shown in Figure 1.Paging technology is used to address all flash spaces, and each page of flash is mapped to the same address space of CE1 (0x9000000 0x9007ffff). During the boot process of the secondary boot program, whenever the flash current page reaches the end of the page, change the output level of PA19, PA20 and PA21 through the page address control register to activate the next page and complete the boot process. In this paper, taking the video acquisition, coding and transmission program based on DM642 as an example, the design process of the secondary boot program of DM642 is described in detail.3 secondary boot program3.1 guidance process The secondary boot loader is placed at the starting address of flash. Once the DSP is powered on and reset, the secondary boot loader will be loaded to address 0 of ram through the automatic loading mechanism of DM642. At this time, the CPU will reset and start to execute the secondary boot loader. The boot process of the secondary boot program is as follows: first, configure the EMIF register, including global control register, CEX space control register, SDRAM control register, timing control register and extended control register. Then, obtain the program entry address, and then obtain the number of bytes and target address of each block according to the format of data block, and start copying the code. When the number of bytes obtained is 0, the boot ends and the CPU jumps to C_ Int00, establish the C language running environment, and execute from main (). The boot process is shown in Figure 2.3.2 secondary boot program design According to the boot process of the secondary boot program, the implementation code of the secondary boot program is written, and the secondary boot program is written in assembly language. The following is the specific implementation of each part. (1) Configure the EMIF register. Define the base address of EMIF register EMIF base = 0x01800000, and define the configuration value of each register as:(2) Copy the application code. Define the address of the boot table as copy_ Table = 0x90000400, the implementation code is as follows:(3) The code that determines whether to reach the end of the page. The address of the page address control register is 0x90080011. During code copying, always judge whether the loading pointer points to the beginning of the next page. If yes, return to 0x9000400. If not, continue copying. The implementation code is as follows:(4) Perform a jump. After the code copy is completed, the boot ends and the jump instruction is executed. The code is as follows:In addition, corresponding command files must be written to cooperate with the boot program to complete the boot process. In this example, put the secondary boot program in the. Boat load section and add the following code to the command file:4 experimental results Add the assembly file of the secondary boot program into the actual project, and apply for the corresponding memory space for the secondary boot program in the command file, compile and connect to generate an executable file (. Out). Then, the executable file is converted into CCS loadable data file through hex6x conversion tool. Establish the connection between CCS simulation environment and DM642 development board, and burn the data file into flash through CCS simulation platform. After burning, disconnect the development board from CCS, and the power on test program can run normally.5 Conclusion This paper introduces the design method of the secondary boot program of flash paging boot of DM642, and gives some implementation codes. Practice shows that this method is feasible. This provides a way for the practical application development based on DM642.
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