温湿度传感器 sht11 仿真程序 sBIt out =P3^0; //加热口 //sBIt input =P1^1;//检测口 //sBIt speek =P2^0;//报警 sBIt clo =P3^7;//时钟 sBIt ST =P3^5;//开始 sBIt EOC =P3^6;//成功信号 sBIt gwei =P3^4;//个位 sBIt swei =P3^3;//十位 sBIt bwei =P3^2;//百位 sBIt qwei =P3^1;//千位 sBIt speak =P0^0;//报警音 sBIt bjled =P0^1;//报警灯 sBIt zcled =P0^2;//正常LED int count; uchar xianzhi;//取转换结果 uchar seth;//高时间 uchar setl;//低时间 uchar seth_mi;//高时间 uchar setl_mi;//低时间 BIt hlbz;//高低标志 BIt clbz; BIt spbz; ///定时中断程序/// void t0 (void) interrupt 1 using 0 { TH0=(65536-200)/256;//5ms*200=1000ms=1s TL0=(65536-200)%256; clo=!clo;//产生时钟 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++; } ///////////// ///////延时/////// delay(int i) { while(--i); } ///////显示处理/////// 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;//定时0 16位工作模式 TH0=(65536-200)/256; TL0=(65536-200)%256; TR0=1; //开始计时 ET0=1; //开定时0中断 EA=1; //开全中断 while(1) { ST=0; _nop_(); ST=1; _nop_(); ST=0; // EOC=0; xianshi(); while(!EOC) { xianshi(); } xianzhi=P2; xianshi(); doing(); } }
上传时间： 2013-11-07
上传用户：我们的船长
介绍ISE13.1 iMPACT 下载BIt文件 和mcs文件的详细步骤
上传时间： 2013-11-17
上传用户：helmos
这一节的目的是使用XPS为ARM PS 处理系统 添加额外的IP。从IP Catalog 标签添加GPIO，并与ZedBoard板子上的8个LED灯相连。当系统建立完后，产生BItstream，并对外设进行测试。本资料为源代码，原文设计过程详见：【 玩转赛灵思Zedboard开发板（4）：如何使用自带外设IP让ARM PS访问FPGA？】 硬件平台：Digilent ZedBoard 开发环境：Windows XP 32 BIt 软件： XPS 14.2 +SDK 14.2
上传时间： 2013-11-06
上传用户：yuchunhai1990
Express Mode uses an 8-BIt wide bus path for fast configuration of Xilinx FPGAs. Thisapplication note provides information on how to perform Express configuration specifically forthe Spartan™-XL family. The Express mode signals and their associated timing are defined.The steps of Express configuration are described in detail, followed by detailed instructions thatshow how to implement the configuration circui
标签： Spartan-XL Express XAPP FPGA
上传时间： 2015-01-02
上传用户：nanxia
The introduction of Spartan-3™ devices has createdmultiple changes in the evolution of embedded controldesigns and pushed processing capabilities to the “almostfreestage.” With these new FPGAs falling under $20, involume, with over 1 million system gates, and under $5for 100K gate-level units, any design with programmablelogic has a readily available 8- or 16-BIt processor costingless than 75 cents and 32-BIt processor for less than $1.50.
上传时间： 2013-10-21
上传用户：ligi201200
The Virtex™-4 user access register (USR_ACCESS_VIRTEX4) is a 32-BIt register thatprovides direct access to BItstream data by the FPGA fabric. It is useful for loadingPowerPC™ 405 (PPC405) processor caches and/or other data into the FPGA after the FPGAhas been configured, thus achieving partial reconfiguration. The USR_ACCESS_VIRTEX4register is programmed through the BItstream with a command that writes a series of 32-BItwords.
标签： USR_ACCESS PowerPC XAPP 719
上传时间： 2013-12-23
上传用户：yuanwenjiao
WP409利用Xilinx FPGA打造出高端比特精度和周期精度浮点DSP算法实现方案： High-Level Implementation of BIt- and Cycle-Accurate Floating-Point DSP Algorithms with Xilinx FPGAs
上传时间： 2013-10-21
上传用户：huql11633
SRAM-based FPGAs are non-volatile devices. Upon powerup, They are required to be programmed from an external source. This procedure allows anyone to easily monitor the BIt-stream, and clone the device. The problem then becomes how can you effectively protect your intellectual property from others in an architecture where the part is externally programmed?
上传时间： 2013-10-20
上传用户：磊子226
各种功能的计数器实例（VHDL源代码）:ENTITY counters IS PORT ( d : IN INTEGER RANGE 0 TO 255; clk : IN BIt; clear : IN BIt; ld : IN BIt; enable : IN BIt; up_down : IN BIt; qa : OUT INTEGER RANGE 0 TO 255; qb : OUT INTEGER RANGE 0 TO 255; qc : OUT INTEGER RANGE 0 TO 255; qd : OUT INTEGER RANGE 0 TO 255; qe : OUT INTEGER RANGE 0 TO 255; qf : OUT INTEGER RANGE 0 TO 255; qg : OUT INTEGER RANGE 0 TO 255; qh : OUT INTEGER RANGE 0 TO 255; qi : OUT INTEGER RANGE 0 TO 255;
上传时间： 2013-10-09
上传用户：松毓336
特点 显示范围0至19999(瞬間量),0至999999999(9位數累積量)可任意规划 精確度0.03%滿刻度(瞬間量) 頻率输入范围 0.01Hz 至 10KHz 瞬間量与累积量時間基數可任意规划(1 或 60 或 3600 秒) 瞬間量之最高显示值可任意规划(0至19999) 累积量之输入脈波比例刻画調整可任意规划(0.00001至9999.99999) 具有二組警報功能 15 BIt 隔离类比输出 数位RS-485 界面 数位脈波同步输出功能
上传时间： 2014-11-07
上传用户：xaijhqx
