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When we buy the home it's not simply the home we buy but we have also bought the area part.<br /><br /> The important thing would be to know the condition of your neighborhood. What makes the nice neighborhood?It exchange on the buyer because everyone has its own conception how he or she thinks. You must live where you can socialize if you're single.But if you are living with your loved ones then you must have the area where you children's will be safe.Beside our perceptions, an excellent neighborhood has got the same distinctiveness. You should dispose garbage and should keep consitently the position around nice. This really is something essential that you should keep in mind.<br /><br />You've to take care of this if you're living with the youngsters' and the old ones. Usually it might harm the health of your family and the loved ones.You should bear in mind that the place where you are living the crime rate is minimal there, So that you may live without any concern. It'll make simple to travel or walk at night around the neighborhood.You home ought to be near the town. It must be near from the colleges, restaurants, areas etc. the services and all of the services that you need also needs to be near your home.<br /><br /> These specific things add the value for the area. In this manner you can assure all of the comforts for your family.You should be very careful when you are choosing the property to purchase. You've to see all the things that either the positioning is positive or all the basics are near and available or not. It's because when you once select the property and the place and purchase it you will function as the section of that property and place. Therefore these are some of the key elements you need to bear in mind.

Patriots defensive group continued loss of soldiers off

    According to ESPN reports , the New England Patriots cornerback A Qibu - Taleb (Aqib Talib) will not travel with the team to New York ,chaussure pas cher, he will miss this week, the Patriots and the New York Jets will play.

    Taleb experienced this season, the Patriots defense group has become the most important players, he at last week 's game against the New Orleans Saints slander to the hips.

    Patriots have lost two of their best defensive players , tackle Vince - Nashville Fork and linebacker Gerald - Mayo have been placed on the injured reserve list.

    Taleb not play , the Patriots may make sophomore Alfonso - Deng Nade and Kyle - Arlington as the starting cornerback , if necessary , was recently appointed defense team captain Ryan - McAdoo pedicle can also change the play cornerback .

    27 -year-old Talib was traded to the Patriots last season came this season, he has four steals , ranked first in the squad , but also tied for the league 's first one . This season he has repeatedly been used to man-mark the opponent's top passing targets, such as his defensive game on the other side of the top catcher Jimmy - Graham did not receive a pass .

    Several other can not participate in the game this week, Patriots wide receiver Danny players there - Amendola , defensive tackles Tommy - Kelly and running back Leon - Washington.

D A based on MIT-BIH heart electrycity data of STM32 return

0 foreword
The electrocardiosignal is studied and applied to the biological electric signals of clinical medicine first by the mankind, through can predict heart disease to the analysing and processing of the electrocardiosignal effectivelying. How to utilize the heart electrycity data to develop and study the associated medical equipment is essential to scientific research personnel. Heart electrycity machine format playback original the intersection of MIT-BIH and the intersection of heart electrycity and data of memory, according to form that store its, utilize the system designed to change the final slave terminal to emit the analog signal through D/ A. This text introduces STM32 microcontroller based on ARM Cortex-M3 kernel as the design method that electrocardiosignal data of embedded chip return of top management.

An operating principle and hardware design
The utility program of the upper computer reads a file in the heart electrycity database, device driver of use and D/ A return the apparatus of the module and carry on communication. To the transmission data of the hardware device constantly through USB bus line, the basic data that the apparatus is being received, utilize DMA transmission mode, conveys to DAC module losing continuously, under the trigger of the timer, DAC module finished machine format D/ A to change, emitted the analog signal in the terminal installation namely ondoscope last time finally.
D/ A returns the structured flowchart of the hardware and is shown as in Fig. 1.

1. Brief introduction of 1 STM32F103XX microprocessor
The system hardware adopts the new 32-bit microcomputer microcontroller STM32F103RE based on Cortex-M3 kernel that the semi-conductive company of purpose law develops as the top management chip, operating frequency is up to 72 MHz, internal integrated RAM, full-speed USB 2. Abundant peripheral hardware such as 0 apparatus interface modules and 12 double-channel high-accuracy D/ A conversion modules. While combining high performance, low power consumption and low-voltage, have kept high integrated characteristic and simple and easy development characteristic. At the time of application and development, only need the peripheral circuit which connects drib to make the circuit simple in construction and compact.
1. 2 D/ A conversion module
D/ A conversion module DAC It is 12 digital input, D/ A converter of voltage output. DAC can dispose 8 or 12 bit patterns, can use with DMA control device. DAC has 2 OCH outgoing channels, there is a single converter in each passway, can work under one pair of DAC modes, DAC has integrated 2 to export and buffer, can be used for reducing output impedence, does not need operational amplifier of outside, can direct drive external loading. DAC can choose the external incident to touch off to change the counter of the timer, the interrupt line of outside And the software is touched off.
After can enable DAC passwaying, STM32F103XX corresponding GPIO base pin PA4 or PA5 Will have contacts with analog output of DAC automatically. In order to avoid depending on interference and extra power consumption for a living, the base pin PA4 and PA5 is disposed into analog input AIN ,As shown in Fig. 2.

0 foreword
The electrocardiosignal is studied and applied to the biological electric signals of clinical medicine first by the mankind, through can predict heart disease to the analysing and processing of the electrocardiosignal effectivelying. How to utilize the heart electrycity data to develop and study the associated medical equipment is essential to scientific research personnel. Heart electrycity machine format playback original the intersection of MIT-BIH and the intersection of heart electrycity and data of memory, according to form that store its, utilize the system designed to change the final slave terminal to emit the analog signal through D/ A. This text introduces STM32 microcontroller based on ARM Cortex-M3 kernel as the design method that electrocardiosignal data of embedded chip return of top management.

An operating principle and hardware design
The utility program of the upper computer reads a file in the heart electrycity database, device driver of use and D/ A return the apparatus of the module and carry on communication. To the transmission data of the hardware device constantly through USB bus line, the basic data that the apparatus is being received, utilize DMA transmission mode, conveys to DAC module losing continuously, under the trigger of the timer, DAC module finished machine format D/ A to change, emitted the analog signal in the terminal installation namely ondoscope last time finally.
D/ A returns the structured flowchart of the hardware and is shown as in Fig. 1. </p>

1. Brief introduction of 1 STM32F103XX microprocessor
The system hardware adopts the new 32-bit microcomputer microcontroller STM32F103RE based on Cortex-M3 kernel that the semi-conductive company of purpose law develops as the top management chip, operating frequency is up to 72 MHz, internal integrated RAM, full-speed USB 2. Abundant peripheral hardware such as 0 apparatus interface modules and 12 double-channel high-accuracy D/ A conversion modules. While combining high performance, low power consumption and low-voltage, have kept high integrated characteristic and simple and easy development characteristic. At the time of application and development, only need the peripheral circuit which connects drib to make the circuit simple in construction and compact.
1. 2 D/ A conversion module
D/ A conversion module DAC It is 12 digital input, D/ A converter of voltage output. DAC can dispose 8 or 12 bit patterns, can use with DMA control device. DAC has 2 OCH outgoing channels, there is a single converter in each passway, can work under one pair of DAC modes, DAC has integrated 2 to export and buffer, can be used for reducing output impedence, does not need operational amplifier of outside, can direct drive external loading. DAC can choose the external incident to touch off to change the counter of the timer, the interrupt line of outside And the software is touched off.
After can enable DAC passwaying, STM32F103XX corresponding GPIO base pin PA4 or PA5 Will have contacts with analog output of DAC automatically. In order to avoid depending on interference and extra power consumption for a living, the base pin PA4 and PA5 is disposed into analog input AIN ,As shown in Fig. 2.

</p>1. 3 USB full-speed device interface
Having the interface outside USB realizes USB 2. The interface of the total space of 0 full-speed bus lines and APB1, it accords with USB normal communication connection to offer between the functions realized for PC host computer and microcontroller. PC host computer, with realizing machine format transmission through sharing USB end point buffer between the microcontrollers.
The integrated USB peripheral hardware within STM32 chip, has lightened the design of USB circuit to bear greatly, only need to design USB interface circuit, can realize USB communication of the circuit board of STM32 chip is designed. USB hardware interface circuit that D/ A recording equipment chooses is shown as in Fig. 3: USB pulls upward the voltage and connects on the line in D , so originally design USB to realize full-speed communication, the PC supplies power for the USB interface. USB connects GPIO base pin PA11, USB to – connect to GPIO base pin PA12, as shown in Fig. 2:

2 firmware programmings
The firmware procedure operates the program code in USB apparatus, finish the function of USB for the auxiliary hardware. What procedure of this system firmware chose is The USB-FS-Device Libra ry firmware program library that STM offered. Mainly finish the following function: First, deal with USB standard asking and user’s self-defining request; Second, set up various descriptors of the apparatus according to USB norm; Third, the initialized system has the disposition of cutting off and internal end point of units at various levels. Under the circumstances that Keil compiles the environment, utilizes the available firmware procedure chassis function, add the corresponding program code in the chassis of procedures of firmware that STM offers according to the apparatus demand, finish the function purpose of a recording equipment.
2. Brief introduction of 1 STM32F103xxUSB firmware program library
STM32F103xxUSB firmware program library is the firmware program library that the semi-conductive company of purpose law offered for STM32F103XX series ARM microprocessor specially, rolling mill bearing mainly divided into kernel storey and application interface floor, the structured flowchart is shown as in Fig. 4.

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Kernel layer: This layer management uses USB IP hardware and direct communication between the two of USB standard agreement. USB storehouse kernel complies with USB 2. And 0 standards are separated with the canonial STM32F103XX firmware storehouse.
Application program interface layer: This layer has offered intact interface between kernel and final utility program to user. The application interface layer and employs finally to communicate to manage the applied hardware demand with the firmware storehouse.
2. The designs of 2 firmware procedures
In the development of this system, have not carried on further investigation on kernel floor and revised, finish the required design of the apparatus function transformer test equipment only to the application interface floor. The development of the application layer mainly includes: System initiation, mainly turn on the clock of system and used peripheral hardware; USB clock is disposed, sets up and can enable USB clock, it is 48 MHz; USB initialisation is mainly to finish the enumerating of USB apparatus; Timer module dispose and DAC and the intersection of DMA and module dispose, finish used initialisation of peripheral hardware mainly; Wait for the transmission data of the upper computer after disposing the good mark bit finally. All codes are finished with function of the storehouse, the main program flowchart is shown as in Fig. 5.

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Unless at it insert USB apparatus, last port per USB host computer samsara,it last D D – between voltage difference, will recognise the inserting of USB apparatus, then enumerate the apparatus. In D/ A recording equipment designed, the realization which enumerates the course is mainly to the apparatus descriptor of USB apparatus, dispose the descriptor, port descriptor and disposition of the end point descriptor to realize. The course that USB apparatus enumerates is to obtain the information of USB apparatus through reading each descriptor, then configure it to a kind of function among them.

In D/ A recording equipment modular design, has used 3 end points together, it is the end point 0 respectively, 2 and 3. The end point 0 is the control end point of USB apparatus acquiescence, have adopted and controlled transmission mode, mainly finish the enumerating of the apparatus. The end point 2, 3 is the end point of batch transmission, what data transmission is adopted is the transmission mode of batch, receive the electrocardiosignal data that the upper computer sends and breathe the signal data separately. The timer is a beat generator, touch off the source as the outside incident of DAC. Loading in advance value and clock frequency demultiplication coefficient of the time clock are determined by the fact that the sampling frequency of the original digital signal comes. In D/ A recording equipment, have used two common timers 3, 4, is regarded as the electrocardiosignal and breathes the trigger source of the data DA D/A conversion of signal separately. The configures to 12 justified right-hand of data and inputsing of DAC, voltage output double-channel mode. Among them, the passway 1 finishes the electrocardiosignal machine format D/ A, the passway 2 finishes breathing the signal machine format D/ A, choose timer as the external incident and touch off the source, finish machine format DA once to realize within a regular cycle. DMA module mainly finishes the machine format transformation, USB module receives the data that the end point stops accepting, utilize DMA way to send while buffering from the end point into DAC_DHRyyD register of DAC, through after corresponding displacement, the data of the load are touched off transmitting in DORx register through the outside incident of the timer subsequently in DHR1 and DHR2 register by unloading, after time tsetting, it is effective to export. In data transmission, have adopted the double buffer mechanism, has opened up 2 to buffer buffer in RAM, USB module receive data are put in one buffer, DMA transmits namely DAC stage, the data dealt with are the data in another buffer, in this way, make receive data and processing data run side by side and go on, the corrugate serial continuity after guaranteeing to change. Pair of buffered realization is roughly as follows take electrocardiosignal data as examples : Original to turn location of idle buffer into buffer1, DMA source initialisation configured to buffer1. The end point 2 receives a data packet to put into buffer1, judge it as the first receive data, if the first time receive, it is buffer2 to change the location of idle buffer and and allow the receiving of the next data packet; But for the first time, cut off and return directly. Continue receiving the second data packet, put into buffer2, judge whether first DMA transmits, if yes, it is buffer1 to change the location of idle buffer, opens DMA to transmit, and can enable the timer; If not, stop returning. When it is cut off that it is finished entering that DMA transmits, judge the location of idle buffer, the reconfiguration DMA at first, including DMA source and transmitting the change of the number, change the location of idle buffer finally, and allow the continuation of the end point to receive. The electrocardiosignal data receiving process flow block diagram is shown as in Fig. 6. For breathing the signal data, do the same treatment.

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3 apparatuses drive and the design of the utility program
USB driver program of this system adopts WDM model, the developing instrument chosen is Windows XP DDKBuild 2600 ,Driver Studio 3. 2 and VC 6. 0. After the developing platform of driver program puts up and builds up work, according to the needs of reality, produce driver program chassis and Read with DriverWorks DriverWizard attached, Write function, adds the equipment control program in DeviceIoControl function, finishes the self-defining function.
The utility program of the upper computer adopts VC 6. Many file interface utility programs based on MFC of one 0 ones that establish, mainly divide as the Administration Module of data, return basic modules such as the module,etc.. The communication between Win32 utility program and device driver is to pass the interface API Function come, realize, utility program need, find out about complicated USB agreement for the intersection of USB and apparatus communication, regard the USB interface as the file to operate, thus easy realization USB interface communication.

4 systems return result analysis
According to the design load USB apparatus of the firmware procedure, insert the host computer and load the corresponding driver program, turn on the upper computer procedure, read 220 in the database. Dat file, transmits and finishes D/ A to STM32, signal wave and ondoscope of primitive heart electrycity return corrugate comparison and is shown as in Fig. 7.

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Better completion of D/ A module returns the function. Through the ondoscope real-time analysis, return undulate cycle and range and also meet the demands, the instant preface meets the demands.

5 concludes the speech
The design that MIT-BIH heart electrycity data D/ A based on STM32 returned, has realized perfect combination in hardware and firmware utility program two, have returned and made the good operation result to primitive machine format D/ A. The Integrated and abundant function module within the chip STM32F103RE of top management, reduced the difficulty developed at the same time, also the stability of the security system, make this recording equipment have extensive application prospect in medical research and industrial production.

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