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The #1 Step-by-Step Guide to labviewNow Completely Updated for labview 8!
Master labview 8 with the industry's friendliest, most intuitive tutorial: labview for Everyone, Third Edition. Top labview experts Jeffrey Travis and Jim Kring teach labview the easy way: through carefully explained, step-by-step examples that give you reusable code for your own projects!
This brand-new Third Edition has been fully revamped and expanded to reflect new features and techniques introduced in labview 8. You'll find two new chapters, plus dozens of new topics, including Project Explorer, AutoTool, XML, event-driven programming, error handling, regular expressions, polymorphic VIs, timed structures, advanced reporting, and much more. Certified labview Developer (CLD) candidates will find callouts linking to key objectives on NI's newest exam, making this book a more valuable study tool than ever.
Not just what to d why to do it!
Use labview to build your own virtual workbench
Master labview's foundations: wiring, creating, editing, and debugging VIs; using controls and indicators; working with data structures; and much more
Learn the "art" and best practices of effective labview development
NEW: Streamline development with labview Express VIs
NEW: Acquire data with NI-DAQmx and the labview DAQmx VIs
NEW: Discover design patterns for error handling, control structures, state machines, queued messaging, and more
NEW: Create sophisticated user interfaces with tree and tab controls, drag and drop, subpanels, and more
Whatever your application, whatever your role, whether you've used labview or not, labview for Everyone, Third Edition is the fastest, easiest way to get the results you're after!
標(biāo)簽：
Everyone
LabVIEW
for
英文
上傳時(shí)間：
2013-10-14
上傳用戶：shawvi
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The LPC2292/2294 microcontrollers are based on a 16/32-bit ARM7TDMI-S CPU with real-time emulation and embedded trace support, together with 256 kB of embedded high-speed flash memory. A 128-bit wide memory interface and a unique accelerator architecture enable 32-bit code execution at the maximum clock rate. For critical code size applications, the alternative 16-bit Thumb mode reduces code by more than 30 pct with minimal performance penalty.
With their 144-pin package, low power consumption, various 32-bit timers, 8-channel 10-bit ADC, 2/4 (LPC2294) advanced CAN channels, PWM channels and up to nine external interrupt pins these microcontrollers are particularly suitable for automotive and industrial control applications as well as medical systems and fault-tolerant maintenance buses. The number of available fast GPIOs ranges from 76 (with external memory) through 112 (single-chip). With a wide range of additional serial communications interfaces, they are also suited for communication gateways and protocol converters as well as many other general-purpose applications.
Remark: Throughout the data sheet, the term LPC2292/2294 will apply to devices with and without the /00 or /01 suffix. The suffixes /00 and /01 will be used to differentiate from other devices only when necessary.
標(biāo)簽：
lpc
datasheet
2292
2294
上傳時(shí)間：
2014-12-30
上傳用戶：aysyzxzm
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針對(duì)UHF讀寫(xiě)器設(shè)計(jì)中，在符合EPC Gen2標(biāo)準(zhǔn)的情況下，對(duì)標(biāo)簽返回的高速數(shù)據(jù)進(jìn)行正確解碼以達(dá)到正確讀取標(biāo)簽的要求，提出了一種新的在ARM平臺(tái)下采用邊沿捕獲統(tǒng)計(jì)定時(shí)器數(shù)判斷數(shù)據(jù)的方法，并對(duì)FM0編碼進(jìn)行解碼。與傳統(tǒng)的使用定時(shí)器定時(shí)采樣高低電平的FM0解碼方法相比，該解碼方法可以減少定時(shí)器定時(shí)誤差累積的影響；可以將捕獲定時(shí)器數(shù)中斷與數(shù)據(jù)判斷解碼相對(duì)分隔開(kāi)，使得中斷對(duì)解碼影響很小，實(shí)現(xiàn)捕獲與解碼的同步。通過(guò)實(shí)驗(yàn)表明，這種方法提高了解碼的效率，在160 Kb/s的接收速度下，讀取一張標(biāo)簽的時(shí)間約為30次/s。
Abstract:
Aiming at the requirement of receiving correctly decoded data from the tag under high-speed communication which complied with EPC Gen2 standard in the design of UHF interrogator， the article introduced a new technology for FM0 decoding which counted the timer counter to judge data by using the edge interval of signal capture based on the ARM7 platform. Compared with the traditional FM0 decoding method which used the timer timed to sample the high and low level， the method could reduce the accumulation of timing error and could relatively separate capture timer interrupt and the data judgment for decoding， so that the disruption effect on the decoding was small and realizd synchronization of capture and decoding. Testing result shows that the method improves the efficiency of decoding， at 160 Kb/s receiving speed， the time of the interrogator to read a tag is about 30 times/s.
標(biāo)簽：
UHF
FM0
讀寫(xiě)器
解碼技術(shù)
上傳時(shí)間：
2013-11-10
上傳用戶：liufei
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This example shows how to update at regulate period the WWDG counter using theEarly Wakeup interrupt (EWI).
The WWDG timeout is set to 262ms, refresh window set to 41h and the EWI isenabled. When the WWDG counter reaches 40h the EWI is generated and in the WWDGISR the counter is refreshed to prevent a WWDG reset and led connected to PC.07is toggled.The EXTI line9 is connected to PB.09 pin and configured to generate an interrupton falling edge.In the NVIC, EXTI line9 to 5 interrupt vector is enabled with priority equal to 0and the WWDG interrupt vector is enabled with priority equal to 1 (EXTI IT > WWDG IT).
The EXTI Line9 will be used to simulate a software failure: once the EXTI line9event occurs (by pressing Key push-button on EVAL board) the correspondent interruptis served, in the ISR the led connected to PC.07 is turned off and the EXTI line9pending bit is not cleared. So the CPU will execute indefinitely EXTI line9 ISR andthe WWDG ISR will never be entered(WWDG counter not updated). As result, when theWWDG counter falls to 3Fh the WWDG reset occurs.If the EXTI line9 event don抰 occurs the WWDG counter is indefinitely refreshed inthe WWDG ISR which prevent from WWDG reset.
If the WWDG reset is generated, after resuming from reset a led connected to PC.06is turned on.
In this example the system is clocked by the HSE(8MHz).
標(biāo)簽：
V100
STM
100
32V
上傳時(shí)間：
2013-11-11
上傳用戶：gundamwzc
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#include <reg51.h>#include <main.h>#include <interrupt.h>
cs5460a應(yīng)用電路(含源程序)bit code table_odd_even_bit[16]={0,1,1,0,1,0,0,1,1,0,0,1,0,1,1,0};
extern uchar rs485_timeout,pointer_buf485;extern uchar rs485_buf[MAX_485_LEN];extern uchar idata spi_buf[MAX_SPI_LEN];extern uchar pointer_send,send_len; extern uchar count_1s;//extern uint count_2min;extern uint count_10s;extern uchar oper_len,send_offset,chk_sum,send_i;extern bit flag_send_data,flag_level,flag_drdy,flag_data_ok;
標(biāo)簽：
5460a
5460
cs
C程序
上傳時(shí)間：
2014-01-24
上傳用戶：heart_2007
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溫濕度傳感器 sht11 仿真程序
sbit out =P3^0; //加熱口
//sbit input =P1^1;//檢測(cè)口
//sbit speek =P2^0;//報(bào)警
sbit clo =P3^7;//時(shí)鐘
sbit ST =P3^5;//開(kāi)始
sbit EOC =P3^6;//成功信號(hào)
sbit gwei =P3^4;//個(gè)位
sbit swei =P3^3;//十位
sbit bwei =P3^2;//百位
sbit qwei =P3^1;//千位
sbit speak =P0^0;//報(bào)警音
sbit bjled =P0^1;//報(bào)警燈
sbit zcled =P0^2;//正常LED
int count;
uchar xianzhi;//取轉(zhuǎn)換結(jié)果
uchar seth;//高時(shí)間
uchar setl;//低時(shí)間
uchar seth_mi;//高時(shí)間
uchar setl_mi;//低時(shí)間
bit hlbz;//高低標(biāo)志
bit clbz;
bit spbz;
///定時(shí)中斷程序///
void t0 (void) interrupt 1 using 0
{
TH0=(65536-200)/256;//5ms*200=1000ms=1s
TL0=(65536-200)%256;
clo=!clo;//產(chǎn)生時(shí)鐘
if(count>5000)
{
if(hlbz)
{
if(seth_mi==0){seth_mi=seth;hlbz=0;out=0;}
else seth_mi--;
}
if(!hlbz)
{
if(setl_mi==0){setl_mi=setl;hlbz=1;out=1;}
else setl_mi--;
}
count=0;
}
else count++;
}
/////////////
///////延時(shí)///////
delay(int i)
{
while(--i);
}
///////顯示處理///////
xianshi()
{
int abcd=0;
int i;
for (i=0;i<5;i++)
{
abcd=xianzhi;
gwei=1;
swei=1;
bwei=1;
qwei=1;
P1=dispcode[abcd/1000];
qwei=0;
delay(70);
qwei=1;
abcd=abcd%1000;
P1=dispcode[abcd/100];
bwei=0;
delay(70);
bwei=1;
abcd=abcd%100;
P1=dispcode[abcd/10];
swei=0;
delay(70);
swei=1;
abcd=abcd%10;
P1=dispcode[abcd];
gwei=0;
delay(70);
gwei=1;
}
}
doing()
{
if(xianzhi>100)
{bjled=0;speak=1;zcled=1;}
else {bjled=1;speak=0;zcled=0;}
}
void main(void)
{
seth=60;//h60秒
setl=90;//l90秒
seth_mi=60;//h60秒
setl_mi=90;//l90秒
TMOD=0X01;//定時(shí)0 16位工作模式
TH0=(65536-200)/256;
TL0=(65536-200)%256;
TR0=1; //開(kāi)始計(jì)時(shí)
ET0=1; //開(kāi)定時(shí)0中斷
EA=1; //開(kāi)全中斷
while(1)
{
ST=0;
_nop_();
ST=1;
_nop_();
ST=0;
// EOC=0;
xianshi();
while(!EOC)
{
xianshi();
}
xianzhi=P2;
xianshi();
doing();
}
}
標(biāo)簽：
sht
11
溫濕度傳感器
仿真程序
上傳時(shí)間：
2013-11-07
上傳用戶：我們的船長(zhǎng)
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This application note covers the design considerations of a system using the performance
features of the LogiCORE™ IP Advanced eXtensible Interface (AXI) Interconnect core. The
design focuses on high system throughput through the AXI Interconnect core with F
MAX
and
area optimizations in certain portions of the design.
The design uses five AXI video direct memory access (VDMA) engines to simultaneously move
10 streams (five transmit video streams and five receive video streams), each in 1920 x 1080p
format, 60 Hz refresh rate, and up to 32 data bits per pixel. Each VDMA is driven from a video
test pattern generator (TPG) with a video timing controller (VTC) block to set up the necessary
video timing signals. Data read by each AXI VDMA is sent to a common on-screen display
(OSD) core capable of multiplexing or overlaying multiple video streams to a single output video
stream. The output of the OSD core drives the DVI video display interface on the board.
Performance monitor blocks are added to capture performance data. All 10 video streams
moved by the AXI VDMA blocks are buffered through a shared DDR3 SDRAM memory and are
controlled by a MicroBlaze™ processor.
The reference system is targeted for the Virtex-6 XC6VLX240TFF1156-1 FPGA on the
Xilinx® ML605 Rev D evaluation board
標(biāo)簽：
XAPP
740
AXI
互聯(lián)
上傳時(shí)間：
2013-11-23
上傳用戶：shen_dafa
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The LogiCORE™ GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex™-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standards, or from scratch, to support a wide variety of custom protocols.The Wizard produces a wrapper, an example design, and a testbench for rapid integration and verification of the serial interface with your custom function
Features• Creates customized HDL wrappers to configureVirtex-5 RocketIO™ GTP transceivers• Users can configure Virtex-5 GTP transceivers toconform to industry standard protocols usingpredefined templates, or tailor the templates forcustom protocols• Included protocol templates provide support for thefollowing specifications: Aurora, CPRI, FibreChannel 1x, Gigabit Ethernet, HD-SDI, OBSAI,OC3, OC12, OC48, PCI Express® (PCIe®), SATA,SATA II, and XAUI• Automatically configures analog settings• Each custom wrapper includes example design, testbench; and both implementation and simulation scripts
標(biāo)簽：
Transceiver
Virtex
Wizar
GTP
上傳時(shí)間：
2013-10-20
上傳用戶：dave520l
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a8259 可編程中斷控制 altera提供
The a8259 is designed to simplify the implementation of the interrupt interface in 8088 and 8086 based microcomputer systems. The device is known as a programmable interrupt controller. The a8259 receives and prioritizes up to 8 interrupts, and in the cascade mode, this can be expanded up to 64 interrupts. An asynchronous reset and a clock input have been added to improve operation and reliability.
標(biāo)簽：
8259
VHDL
代碼
上傳時(shí)間：
2015-01-02
上傳用戶：panpanpan
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SL811開(kāi)發(fā)資料_包含源程序_電路圖_芯片資料:SL811HS Embedded USB Host/Slave Controller.The SL811HS is an Embedded USB Host/Slave Controller capable of communicate with either full-speed or low-speed USB peripherals. The SL811HS can interface to devices such as microprocessors, microcontrollers, DSPs, or directly to a variety of buses such as ISA, PCMCIA, and others. The SL811HS USB Host Controller conforms to USB Specification 1.1.The SL811HS USB Host/Slave Controller incorporates USB Serial Interface functionality along with internal full-/low-speed transceivers.The SL811HS supports and operates in USB full-speed mode at 12 Mbps, or at low-speed 1.5-Mbps mode.The SL811HS data port and microprocessor interface provide an 8-bit data path I/O or DMA bidirectional, with interrupt support to allow easy interface to standard microprocessors or microcontrollers such as Motorola or Intel CPUs and many others. Internally,the SL811HS contains a 256-byte RAM data buffer which is used for control registers and data buffer.The available package types offered are a 28-pin PLCC (SL811HS) and a 48-pin TQFP package (SL811HST-AC). Both packages operate at 3.3 VDC. The I/O interface logic is 5V-tolerant.
標(biāo)簽：
811
SL
開(kāi)發(fā)資料
源程序
上傳時(shí)間：
2013-12-22
上傳用戶：a82531317
