| Search found 214 matches on edaboard.com: manchester manchester manchester decoder manchester encoder manchester source |
best pic compiler
which one is the best pic compiler?...
Microcontrollers :: 19 Nov 2009 9:53 :: sudipmuk :: Replies: 76 :: Views: 13290
delay circuits in clock recovery from manchester codes
i read lots of patents about clock recovery from manchester codes. they all use delay techniques to delay the manchester codes by 1/3, or 1/4, or 3/4 bit period. however, they did not mention what is this delay circuits and how to realize them. could...
Analog Circuit Design :: 11 Nov 2009 22:08 :: Jing :: Replies: 0 :: Views: 54
matlab codesfor encoding binary data using manchester
hi allplz i need a matlab code for encoding binary data using manchester encoding scheme and then i shd do bpsk or qpsk modulation for that and the i should extract inphase and qudarature data from that modulated signal and i want store it in separat...
Digital communication :: 07 Nov 2009 19:33 :: Aya2002 :: Replies: 2 :: Views: 138
how to listen to digital data in a cable
hi,i will have to collect data from a digital trasmitting cable whose protocol is known and data is not encrypted. how to listen to data without hurting the regular data flow (electrically without voltage or current drop) ?any idea? fyi, this is not...
Hobby Circuits and Small Projects Problems :: 05 Nov 2009 19:56 :: banjo :: Replies: 3 :: Views: 138
help!! htrc110 & 8051
i am using spi to interface htrc110 & 8051 . i have all the codes htrc110 .i wanted to know how to initialize and control htrc110...if anyone has wrkd wid htrc110 den plz provide some basic help to me as i am new to these things.....i wanted to know ...
RF, Microwave, Antennas and Optics :: 26 Oct 2009 12:05 :: waliz :: Replies: 13 :: Views: 1212
problem getting cc1000 to receive data
i can read and write all registers successfully. the problem i am facing is that the clock is always running in both rx_mode and tx_mode hence i am getting in junk data through my dio pin.i am using manchester encoded mode. frequency 433.134mhz any ...
Embedded Systems and Real-Time OS :: 12 Oct 2009 3:00 :: olaoni :: Replies: 0 :: Views: 150
serial port transmission pic18f4620
can i have direct acces on the bits trasmitted to serial port? if i wanted to transfer 1011 on the serial port, can i make a program in c# which only transmits those bits (those are bits, not characters)? or the serial port just transmits ascii chara...
PC Programming and Interfacing :: 08 Oct 2009 18:00 :: mannnish :: Replies: 22 :: Views: 2012
communication problem between two pic mcs using rf modules
i am trying to communicate two pic mcs using rf modules.....i were connected module direcly to pic to tx and rx pins of mc with baud of 500bps.but it doest works properly can any one help me...rx mc received signals but not correctly.its urgent becau...
Microcontrollers :: 01 Oct 2009 15:31 :: thand-s :: Replies: 6 :: Views: 270
digital encoding formats
guys i forgot the basics about the digital encoding format(nrz,manchester...) ,i googled around a bit but could not find few things like:1)why is that dc component is not preferred while transmitting data.2)how can you do clock recovery from the tran...
Digital communication :: 18 Sep 2009 4:44 :: barath_87 :: Replies: 0 :: Views: 141
using pic for 433mhz rf link
hello,i’m using the pic 16f870 usart tx/rx for sending data over rf link at 433mhz.the usart, works fine with baud rate of 4,800b/s (osc=4mhz).when i’m adding the rf link so the tx usart sends that data into the rf transmitter, and the da...
Microcontrollers :: 13 Sep 2009 20:30 :: FvM :: Replies: 3 :: Views: 462
nrzi and manchester
hi all,i need an nrzi and mancester encoder decoder documentation. please if anybody have docs on implementation of these module share it. ill be very thanks full.regards,master_picengineer...
ASIC Design Methodologies & Tools (Digital) :: 04 Sep 2009 20:14 :: nangsuep :: Replies: 1 :: Views: 240
manchester encoder decoder ic?
is there any site that have manchester encoder/decoder ic (online buy)?...
RF, Microwave, Antennas and Optics :: 04 Sep 2009 20:07 :: nangsuep :: Replies: 1 :: Views: 324
cdma with out carrier modulation
generally speaking, the two major points of cdma transceiver are as following,1, pseudo-random code sequences, like m-sequences.2, carrier modulation and demodulation, like psk, qpsk etc.our problem is that we face a baseband transmission system, whi...
Digital communication :: 30 Aug 2009 15:28 :: Hectoryx :: Replies: 4 :: Views: 269
whats going wrong with the code?
i bought a rf kit, transmitter and receiver, and the website of a similar product is below. now, im trying to write code for it, just to make sure it is working. http://www.sparkfun.com/commerce/product_info.php?products_id=8950im using a pic 16f688 ...
Microcontrollers :: 25 Aug 2009 17:23 :: betwixt :: Replies: 19 :: Views: 767
connecting rf to pic interface issue
hey, im in the midst of a project, where my pic (16f690) has been connected to the pc using the rs232 port. its constantly sending up information.i dont know why i didnt think of this earlier, but now i need to include a rf module to the pic too. i h...
Hobby Circuits and Small Projects Problems :: 22 Aug 2009 9:33 :: betwixt :: Replies: 1 :: Views: 324
help with schematics - transceiver
http://www.analog.com/en/rfif-components/rfif-transceivers/adf7020-1/products/product.htmldevice: afd7020 -1 transceiver micro controller : picmicroi really need help on this one.my goal is to connect transceiver to one pin of the microcontroller and...
Electronic Elementary Questions :: 21 Jul 2009 11:04 :: nagaraju427 :: Replies: 7 :: Views: 939
asynchronous circuits synthesis tools
hi everybody,can someone tell me what tools are used for asynchronous cicuits synthesis ?thanks....
ASIC Design Methodologies & Tools (Digital) :: 20 Jul 2009 15:25 :: SUNBELT :: Replies: 6 :: Views: 417
problem with wireless serial transmisson
as i have bought two ask modules (tx and rx) operated at 434 mhz..http://thinklabs.in/shop/product_info.php?cpath=44&products_id=72http://thinklabs.in/shop/product_info.php?cpath=44&products_id=73and i want to make remote control robot for that i am ...
Hobby Circuits and Small Projects Problems :: 17 Jul 2009 20:56 :: betwixt :: Replies: 52 :: Views: 2378
rf modules - external components, correct value of antenna
i have a rf transmitter and a receiver, ask, 433mhz, tx with 4 pins, rx with 8 pins (4 - long distance - 4) - if it usefull, i can upload the datasheet.the questions are: 1. do i have to put any other external component?or a 7805 which feeds the pic ...
RF, Microwave, Antennas and Optics :: 11 Jul 2009 18:03 :: Vandal S :: Replies: 8 :: Views: 437
manchester c code
i have installed mikroc and they say that there is an integrated manchester code in the libraries (or in the help) but its not that fast.does anybody have an optimised code example for a rf receiver (for tx its more simple, right?) paired with a pic ...
Microcontrollers :: 30 Jun 2009 10:15 :: Vandal S :: Replies: 2 :: Views: 339
how can i calculate the bandwidth of if filter in receiver?
hii am using fsk technique to transmit data through air using rf.the data rate is 50kbps and frequency deviation is 90khz.the receiver uses phase lock loop pll method to demodulate the signal.can anyone tell me how can i calculate the bandwidth of i...
RF, Microwave, Antennas and Optics :: 30 May 2009 11:46 :: FvM :: Replies: 4 :: Views: 300
what is the best line code?
can you please tell me what is the best line code in terms of bandwith. why are line codes important in communication ?.....
Digital communication :: 13 May 2009 3:11 :: akmirror :: Replies: 4 :: Views: 363
military standard 1553 protocol - need help
hi guys , i am working on military standard 1553 protocol, in which i got struck at some points. 1. parity generator & checker 2. error detection in message .... i request everyone who read this with kind heart forward...
ASIC Design Methodologies & Tools (Digital) :: 06 May 2009 17:00 :: bharundi :: Replies: 1 :: Views: 147
how to remove the glitches from the output(urgent)
i have designed a manchester encoder in verilog but i am getting the glitches in the output,can any one suggest me the solution of it. i am already storing the output in the register.its urgentthanx...
PLD, SPLD, GAL, CPLD, FPGA Design :: 08 Apr 2009 11:40 :: abhisheksbox :: Replies: 3 :: Views: 351
how to remove the delay from the output of dpll(urgent)
i am recovering the clock from the dpll as manchester data as input to the dpll.but when i implemented the dpll on spartan3 board,output clock exhibits a delay from the input clock.can anyone suggest that how to remove this delay?its urgentthanks...
PLD, SPLD, GAL, CPLD, FPGA Design :: 03 Apr 2009 23:40 :: jawadysf :: Replies: 0 :: Views: 123
heeeeelp plzzzzz am running out of time
hi every1,can anybody help me to change this m-file function into an embedded matlab function to be used as a block in simulink?????\here is the m-file% manchester codet=1:200;% logic 1f(1:50)=1;f(51:100)=-1;% logic 0f(101:150)=-1;f(151:200)=1;freqz2...
Digital Signal Processing :: 03 Apr 2009 15:52 :: battousai_47 :: Replies: 0 :: Views: 186
digital phase lock loop design
hello frendzi want to extract the clock from the manchester coded input data ,i have tried to implement the different techniques of adpll but i didnt get the exact result.can anyway suggest the working model or any type of solution to this problem.?...
PLD, SPLD, GAL, CPLD, FPGA Design :: 24 Mar 2009 17:45 :: FvM :: Replies: 2 :: Views: 327
htrc110 rfid
mel mega 32 in a rfid project .. i m not sure of d compatibility of the two ics . how can i get d information that which microcontroller is suitable wid htrc110..one more problem is that my tag uses manchester coding .. can i detect d same using htr...
Hobby Circuits and Small Projects Problems :: 18 Mar 2009 1:44 :: carlosviotto :: Replies: 2 :: Views: 1380
pic rc5 code
ler? ive googled for days and all the code that i found used delays to sample the signal..which causes problem when rc5 signal timings are slightly different than standard. none of them actually uses manchester decoding.i am looking for a code like t...
Microcontrollers :: 19 Feb 2009 21:11 :: btbass :: Replies: 60 :: Views: 20284
communication between at89c2051 microcontrollers
hi,i am new to 8051 micro controller.i am in need of help in my project.i want to send manchester encoding signal from one at89c2051 microcontroller to another at89c2051 microcontroller.how can i do this?thanks for any help....
PC Programming and Interfacing :: 07 Feb 2009 10:40 :: jewelSust :: Replies: 0 :: Views: 186
choosing a transmitter/reciever
im new to the whole rf area and i have no idea as where to start. my ultimate goal is to use an infared remote control, remove the led and install a optocoupler in its place. then use that as a serial input into the rf ic. at the receiver end i would...
RF, Microwave, Antennas and Optics :: 31 Jan 2009 0:27 :: tanky321 :: Replies: 6 :: Views: 315
read manchester code from u2270
hi, i tried to get help from many people on machester decoding. no one could help. so i started to read the manchester code. the idea is, if the width of the pulse is 90us, pic start to sample after 45us. so it would always stay in the middle of the ...
Microcontrollers :: 24 Jan 2009 20:07 :: viknes1985 :: Replies: 5 :: Views: 2295
encoding in manchester scheme.
hi,how can i encode bits in manchester encoding scheme?suppose i have bits 011010010.now how can i encode this bits?with advance thanksjewel...
PC Programming and Interfacing :: 16 Jan 2009 1:20 :: eltonjohn :: Replies: 2 :: Views: 246
manchester encoding!!!!
hi to all, please can any one help me to build a simulation of manchester encoding.i have found it but its all on vhdl and i culdnt find it on ieee.it should be a simple manchester encoding simulation in matlab.thanks in advance....
Digital communication :: 06 Dec 2008 12:38 :: oister :: Replies: 0 :: Views: 282
how to make automatic measurements and data logging !!
, e.g. amplitude, frequency, rise/fall time, overshoots etc. is that possible using a scope or how should i proceed to record certain events and failures during testing an equipment. secondly this is manchester bi-phase data so whole f......
Professional Hardware and Electronics Design :: 14 Nov 2008 6:09 :: tpj :: Replies: 2 :: Views: 618
64b/66b encoding/scrambling
hello everyone,this problem has plagued me for over 2 weeks and after all the research ive done im still confused.does anyone know if the scrambling is supposed to occur before or after the encoding? from the ieee 802 specs, they say that scrambling ...
Digital communication :: 10 Nov 2008 6:52 :: mathuranathan :: Replies: 2 :: Views: 591
pll ref clock mod with dds
hellois it possible to fsk modulate the reference clock input of pll synthesizer ic (for ex adf4360) with a dds ic(for ex ad9954) to obtain fsk modulated carrier signal?i use a high bandwidth pll loop filter....
RF, Microwave, Antennas and Optics :: 20 Oct 2008 18:37 :: 7rots51 :: Replies: 9 :: Views: 855
869mhz link problems - please help!!!
hi there,i need to get up to 1500 meters (in open field) comunication link, between adeunis modules. my terminals are a master which is an 869.525 mhz ask transmitter and a slaves (ask receiver).the complete set of modules i used is the arf27 from ad...
RF, Microwave, Antennas and Optics :: 13 Oct 2008 13:02 :: biff44 :: Replies: 2 :: Views: 201
rf pic help??
pls help me where to find rf pic projects and how to program rf pics.maybe somebody could also suggest sites with rf pic pdf.i already know how to program pic microcontrollers using basic but i dont know how to transmit the information via rf..also t...
Microcontrollers :: 04 Oct 2008 2:22 :: penoy_balut :: Replies: 1 :: Views: 201
rfid reader ic
hi i am looking for low cost low frequency rfid reader ic.can anyone suggest me the ic thanks...
Microcontrollers :: 17 Aug 2008 16:18 :: xcarriber :: Replies: 56 :: Views: 24603
infra red remote control project
can any one help me in making an infra red remote control project using at89s51 microcontroller and sony remot. please give me the detail decoding of sony remot protocol. a example program written in keil c51 will be highly appriciated.regards...
Microcontrollers :: 11 Aug 2008 6:00 :: binu_ji :: Replies: 5 :: Views: 681
need verilog code for manchester encoder/decoder
i need verilog code for manchester encoder/decoder.please help me....
PLD, SPLD, GAL, CPLD, FPGA Design :: 18 Jul 2008 20:15 :: 7rots51 :: Replies: 0 :: Views: 519
manchester encoder/decoder ic,hdlc controller ic
i want the part number of ics for hdlc controller(single channel for 100kbps speed) and manchester encoder/decoder ic,does anyone have it?---...
Professional Hardware and Electronics Design :: 07 Jul 2008 12:58 :: 7rots51 :: Replies: 0 :: Views: 258
manchester encoder /decoder
hi i am urgently in need of vhdl code for manchester encoder decoder can anybody help me in htis regards...
PLD, SPLD, GAL, CPLD, FPGA Design :: 21 May 2008 13:20 :: tooh83 :: Replies: 1 :: Views: 978
encoding shemes.....!!!!!
plzzz give any article or tutorial covering all the encoding schemes egnrz, nrzi, nrzlmanchester, diifferential manchesterbipolar ami, b8zs, hdb3etc...
Electronic Elementary Questions :: 03 May 2008 12:11 :: elec350 :: Replies: 5 :: Views: 239
rf receiver interface to at89c52
hi,can we direct interfacing the receiver output to uc? withou connet any decoder ic.i have one rf transmitter and receiver car remote control. i dont have oscilloscope to measure the incoming receiver. so, i try to write the decode coding and rs232 ...
Microcontrollers :: 23 Apr 2008 10:48 :: zanor :: Replies: 37 :: Views: 2091
hi help me please
i have a projecy on rfid . i am using u2270 from atmel . i have a manchester code in output of this chip with 512 us width of pulse . i want read a card but i cannot read real number of this card . please help me....
Microcontrollers :: 19 Apr 2008 9:24 :: aminr11 :: Replies: 1 :: Views: 303
how to synch. two diff clock.
hi, in a design i am having two clock.clk1 is of 100khz and clk2 is off 50khz and we are talking data at posedge of clk1 and using this data at posedge of clk2,so how to syn. these clks so that data at posedge of clk2 is not lost.give me some hin...
PLD, SPLD, GAL, CPLD, FPGA Design :: 10 Apr 2008 16:31 :: EDA_hg81 :: Replies: 20 :: Views: 744
ir receiver with microcontroller
i am working on a project to transmit data from pc to a microcontroller. i wrote my own protocol for transmission (a variation of pwm) but i cant get the ir receiver work. i have a 3 pin receiver. it is written on it 6038. it seems that it means the ...
Microcontrollers :: 05 Apr 2008 18:32 :: padmanabhamh :: Replies: 7 :: Views: 492
warning : :physdesignrules:372 - gated clock.? what is it?
hi everyone, i got this warning message in generating program file under xilinx ise 8.2i.(vhdl)warning :physdesignrules:372 - gated clock. clock net clk_recov_op_obuf is sourced by a combinatorial pin. this is not good design practice. use the ce ...
PLD, SPLD, GAL, CPLD, FPGA Design :: 03 Apr 2008 10:03 :: cherjier :: Replies: 5 :: Views: 1050
ADS
:: :: :: Replies: :: Views:
regarding manchester coding and pulse position modulation
hi ,in communication system you find that coding is followed by modulation . following this if i try to use the manchester coded wave to ppm modulator . you find that the modulator converts the manchester code d wave back to the normal ones and zeroe...
Digital communication :: 03 Apr 2008 6:43 :: FvM :: Replies: 1 :: Views: 93
12f629 interupt
could someone please help,i am trying to use the int input on a 12f629 useing pbasic on my easy pic 4 .i was hopeing eventually to get the pic to sent a manchester code every 15 seconds but if the int pin is triggered it jumps to a routine that send...
Microcontrollers :: 14 Mar 2008 22:00 :: Yantob :: Replies: 0 :: Views: 130
manchester encoder
plz upload the vhdl code of manchester encoder....
PLD, SPLD, GAL, CPLD, FPGA Design :: 11 Mar 2008 12:30 :: master_picengineer :: Replies: 1 :: Views: 222
max 232
what is the function of max232? i know it will convert a input serial signal to manchester coding....
Microcontrollers :: 06 Mar 2008 4:17 :: H_D_R :: Replies: 10 :: Views: 2184
can you give an idea?
in my project (manchester code decoding) i succeeded to decode the manchester coded data. but im getting the data by directly wiring the line to the mcu, my aim is to make it with a wireless method. i thought to use a led (like in the circuit below) ...
RF, Microwave, Antennas and Optics :: 04 Mar 2008 0:36 :: mister_rf :: Replies: 1 :: Views: 170
rf & pic
say i have a pair of am receiver and transmitter... how should i use it to send data from 1 receiver to 1 transmitter end?should i use uart?how should i encode the data? ive read about manchester encoding..but its rather complex. does anyone has the ...
Microcontrollers :: 02 Mar 2008 14:28 :: Zhane :: Replies: 4 :: Views: 276
please help!
hi everyoneim using cypress ez-usb fxlp2 to decode a manchester coded signal.my problem is that in my decoding code i tried to do something like that: org 0013h =====>t0isr mov ie,#10000110b mov tcon,#0x14 mov tmod,#0x01 mov tl0,#0x...
PLD, SPLD, GAL, CPLD, FPGA Design :: 23 Feb 2008 11:15 :: volkantr :: Replies: 0 :: Views: 132
manchester coding
i am using pic18f452 microcontroller.i want to send data wirelessly.how do i send using manchester coding?anyone have any example or tutorial for me.i am new in this.thanks...
Microcontrollers :: 21 Feb 2008 14:36 :: s13v3n :: Replies: 0 :: Views: 234
how to convert sinewave to sqr wave from adc samples?
hi friends!, i need to convert the sine wave of a constant or variable frequency usually at the order of few mhz into a square wave so that i can process the frequency information in that square wave very easily.my config isadc of 12-bit which gives ...
PLD, SPLD, GAL, CPLD, FPGA Design :: 15 Feb 2008 6:51 :: xtcx :: Replies: 12 :: Views: 538
programming cy7c68013a in mcs51 assembly???
hi everybody i have a project about manchester decoding, i tried to make it with pic but i failed because pic was slower to do it. after that i decided to make it with 8051 and i already have a cy7c68013a. my problem is about programming cy7c68013a, ...
PLD, SPLD, GAL, CPLD, FPGA Design :: 31 Jan 2008 23:43 :: FvM :: Replies: 2 :: Views: 375
programming cy7c68013a in mcs51 assembly???
hi everybody i have a project about manchester decoding, i tried to make it with pic but i failed because pic was slower to do it. after that i decided to make it with 8051 and i already have a cy7c68013a. my problem is about programming cy7c68013a, ...
Microcontrollers :: 31 Jan 2008 10:12 :: volkantr :: Replies: 0 :: Views: 183
pic manchester decoding
hi everyonecan anyone help me about decoding this data stream.i found assembly codes on web but they have different protocols and for slower signals.my question is that is it possible to decode this signal with using 16f72?the second is how can i inf...
Microcontrollers :: 20 Jan 2008 9:18 :: btbass :: Replies: 1 :: Views: 750
a question about satellite
does anyone know about galileo satellite system?i want ask a question. for galileo system , how many bandwidth does a user segment antenna need?let the segment can receive galileo satellite signals.just like for gps, we usually design a antenna, whic...
RF, Microwave, Antennas and Optics :: 16 Jan 2008 19:15 :: rfmw :: Replies: 3 :: Views: 232
why clock recovery???
can anybody tell me plz : what is the need of clock recovery in digital communication?? how randomization process is helpful in clock recovery and spectral shaping ???...
Digital communication :: 28 Dec 2007 10:11 :: master_picengineer :: Replies: 5 :: Views: 518
syncronisation problem
i modified the xilinx manchester decoder code (xapp339) in order to use command and data sync pulses in manchester enc/dec-oding. quick tutorial for manchester enc/dec.command sync pulse is 1.5 bit time high and 1.5 bit low pulsedata sync pulse is 1....
PLD, SPLD, GAL, CPLD, FPGA Design :: 27 Dec 2007 14:02 :: gloin :: Replies: 0 :: Views: 137
manchester decoding please help!
hi everyonecan anyone share assembly code for decoding manchester coded signals and displaying it with using pic microcontoller? the system i try to prove is that a serial bit stream (manchester coded data) comes into the microcontroller.the protocol...
Microcontrollers :: 24 Dec 2007 17:15 :: picnoobie :: Replies: 3 :: Views: 342
infrared communication ?
hi i want to connect two mirocontrollers together using infrared ,one circuit will be in a rotating cylinder by a way that it will be always in the same direction of the axis of transmission ,the other circuit will be fixed and connected to the pc wi...
Microcontrollers :: 18 Dec 2007 8:57 :: aar :: Replies: 11 :: Views: 792
about xilinx manchester enc. core
hello all,i m trying to run xilinx xapp339, but have a lot of difficulties, is it really working? i m trying to simulate it with modelsim but i couldnt run? in attachment you may see the encoder part simulation. although i tried the testbench files i...
PLD, SPLD, GAL, CPLD, FPGA Design :: 05 Dec 2007 10:18 :: gloin :: Replies: 2 :: Views: 195
help: project related to wireless weather station
can somebody help me to do a project related to wireless weather station. the requirements are simply described as follows. function: wireless remote measurement system that communicates at 433mhz. the purpose of the system is to measure temperature,...
Microcontrollers :: 24 Oct 2007 15:22 :: akilpatrick :: Replies: 8 :: Views: 546
clock and data recovery
hi,any reference about clock and data recovery basics....
Analog IC Design & Layout :: 14 Oct 2007 10:50 :: dachuan315 :: Replies: 7 :: Views: 468
All times are GMT + 1 Hour |
|
