1000 Threads found on edaboard.com: Delay Using Atmel
using calculator "delay" function.
You should point input threshold, output threshold and input and output edge type (rising or falling) and edge number. Then you can plot this expression or print in ascii file.
Analog Circuit Design :: 11-15-2004 20:38 :: Fom :: Replies: 3 :: Views: 1651
can anybody help me design a robot which senses the doorbell and speaks welcome when anybody enters in the house
how can i go about it .can i program it using atmel 8051 and what are the steps to follow
Embedded Systems and Real-Time OS :: 04-30-2005 10:18 :: vicky29 :: Replies: 5 :: Views: 1170
Below code can control long time delay using timer interrupt 0.
$TITLE ( LEDBLKT0 )
; delay using Timer interrupt 0.
; This Application is LED blinking every 1/2 second.
; System Clock : 11.0592Mhz
BLK_TIME EQU 50 ; BLK_TIME/100 = (...)
Microcontrollers :: 01-17-2006 00:08 :: pjyc :: Replies: 9 :: Views: 13988
How to make 31 days delay, using 16F84A?
Please Help me.
Microcontrollers :: 01-31-2006 05:51 :: hassan1980 :: Replies: 3 :: Views: 962
i am designing Mixer using atmel's U2795B with LO at 2.25GHz and RF at 300MHz.
IC is showing very low resistence (80 Ohm) between supply and return path (ground) and because of this a very large current starts flowing exceeding the maximum current rating of IC.
if any one has used this IC reply me.
RF, Microwave, Antennas and Optics :: 03-22-2006 00:03 :: Muhammad Furqan :: Replies: 0 :: Views: 417
I would like to know how to build 1 second delay using IC LM555, I mean the schematic which 555 used as monostable multivibrator. Any help is greatly appreciated.
Analog Circuit Design :: 11-29-2006 05:25 :: reflectarray :: Replies: 0 :: Views: 942
hi can any one tel the example of how to write the code for creating delay using counter.
can u give a simple example vhdl code
EDA Jobs :: 09-17-2007 00:32 :: vrcjobs :: Replies: 3 :: Views: 1935
I am trying to implement the project of SMS (send/receive) on PSTN by using atmel 89S51 microcontroller.
Currently i m thinking to use XR-2211 and XR-2206 for FSK, but i dont know how to implement it.
Can anyone please help me out for that?
Microcontrollers :: 09-24-2007 01:51 :: Prog_UC :: Replies: 4 :: Views: 1756
i have to generate a delay using a function void my_delay( int number, char us_ms_sec_min)
these are the arguments passed.....
us = microsec, ms = millisec, sec and min,.......
kindly give me an idea....
programming using keil 'C'
also i want to implement a program for frequency generation using (...)
Microcontrollers :: 10-07-2008 07:00 :: Kazzam :: Replies: 1 :: Views: 813
Can any body help me to write equations using atmel Wincupl for PAL.
I want to write eqations for DIV-34 counter using PAL IC 22v10.
If you have any sample code :?:
Thankyou in advance
Microcontrollers :: 05-21-2009 02:21 :: chamarnadh :: Replies: 0 :: Views: 899
Hi guys,is there anyway I could get time delay using D Flip flops?I've tried googling it but all I get is info. on 555 IC timers.
What sort of time delay do you want (1mS, 1 min...)?
Electronic Elementary Questions :: 01-13-2010 14:58 :: dunn :: Replies: 6 :: Views: 1003
hello guys.i really need your help.i'm using atmel microcontroller.i need your idea how to write a using what method?for source code i'm using keil uvision software.please help me!!
Microcontrollers :: 02-20-2010 10:01 :: nasirklon :: Replies: 3 :: Views: 2897
Here the example of C18 MPLAB compiler code to generate delay using timer 0:
I want to write the same code using CCS compiler without (...)
Microcontrollers :: 03-06-2010 03:50 :: manrayap :: Replies: 2 :: Views: 1876
Can anyone tell me how to generate exactly 20ms delay using 89S52??
Microcontrollers :: 03-19-2010 11:28 :: sramgrk :: Replies: 2 :: Views: 1238
An acquired solution will be to implement the delay using a hardware timer. Set the timer to desired delay , then wait the interrupt to rise when the delay has elapsed. Waiting can be implemented as you want, better without blocking microcontroller.
Microcontrollers :: 02-07-2011 05:49 :: blind_man :: Replies: 30 :: Views: 4517
Or, from PicList:
; delay = 7 seconds
; Clock frequency = 4 MHz
; Actual delay = 7 seconds = 7000000 cycles
; Error = 0 %
decfsz d1, f
decfsz d2, f
decfsz d3, f
goto delay_0 (...)
Microcontrollers :: 05-25-2012 16:32 :: jpanhalt :: Replies: 3 :: Views: 855
Circuits, codes or modules whatever you named in VHDL is clock based(sequential type codes) so any time specifications should be based on clock.
32 cycles means counting 32 rising or falling edges of clock.
I don't understand it well but you want to give an output with a delay value such as 32 cycles. I mean you produced an value and outputted i
PLD, SPLD, GAL, CPLD, FPGA Design :: 07-26-2012 04:12 :: Ilgaz :: Replies: 1 :: Views: 406
pls send me c program code for generation of pwm pulses by using atmel 89c51 microcontroller and having variable duty ratio
Electronic Elementary Questions :: 02-20-2013 11:16 :: sateeshchandra9 :: Replies: 0 :: Views: 412
I need a way to implement a carry chain delay for a high resolution TDC.
I am only doing simulations in verilog, but I do not know how to create this time delay using verilog.
any help would be appreciated, I am attempting to implement this design my DFF will need to re
PLD, SPLD, GAL, CPLD, FPGA Design :: 07-17-2013 19:40 :: Jetach :: Replies: 0 :: Views: 279
Can somebody guide me how to generate 500 ms delay using any of the timer like Timer 0 or Timer 1 of ATMEGA8.
Microcontrollers :: 10-25-2013 04:42 :: djc :: Replies: 6 :: Views: 1282
Can't say about the C language, but in ASM, it can be written like this. I guess your C compiler will support assembly with 'ASM' initial in every line.
MOV R1, 0EH
MOV P2, #00H
MOV P2, #0FFH
MOV TMOD, #01H
MOV TH0, #00H
MOV TL0, #00H
JNB TF0, $
DJNZ R1, delay
Microcontrollers :: 08-14-2014 06:34 :: Genovator :: Replies: 4 :: Views: 400
I am designing a waveguide filter using HFSS and need to see the group delay of the filter but I donnt know how to see it in HFSS.I think maybe using the "output variable" in the postprocessing but I cannt not edit the formular. help , plz!
RF, Microwave, Antennas and Optics :: 05-11-2005 23:30 :: hakunamatata :: Replies: 0 :: Views: 724
use this little application to generate the exact delay u is in assembly code..u can embedded the assembly code in C.
Microcontrollers :: 01-13-2006 07:26 :: buts101 :: Replies: 5 :: Views: 2829
Which languge do you use?
If you use C18, you can use delay library functions.
Embedded Systems and Real-Time OS :: 11-19-2006 03:48 :: coshkun :: Replies: 4 :: Views: 2009
the program help is good but may not satisfu you
dor the delay of 1 usecond , i think there is no basic command for that , but u could use the assembly comand 'nop' inside the basic code
Microcontrollers :: 08-27-2007 10:37 :: medra :: Replies: 4 :: Views: 2417
hi can any tell how to writ vhdlcode
to introduce delay which is synthesizable
a<=b after 50 ns;
c<= d after 30 ns;
PLD, SPLD, GAL, CPLD, FPGA Design :: 09-12-2007 23:55 :: ravi33811 :: Replies: 5 :: Views: 2866
I want to generate delay of 1sec using timer register of atmega32,plz any budy provide me code in assembly language i m using avr studio.reply immediately
Microcontrollers :: 09-25-2008 04:13 :: Rakesh hasija :: Replies: 0 :: Views: 1392
First you must develop an 1us delay. Which you can use a series of NOPs or a loop or something.
#define delay1us NOP(); NOP(); NOP(); NOP(); NOP(); NOP(); NOP();
Then it is most simple to just make the larger delays loop over smaller ones.
Which adds a little inaccuracy, but I assume as you are not (...)
Embedded Systems and Real-Time OS :: 12-05-2008 05:28 :: maui :: Replies: 5 :: Views: 907
The minimum delay would be one 'nop()' instruction.
Which with a 4 Meg oscillator would give you 1uS delay.
An 8 Meg oscillator would give you your 500nS delay.
Microcontrollers :: 09-23-2009 12:13 :: btbass :: Replies: 3 :: Views: 940
asm("nop") is equivalent to delay of 200 ns @ 20MHZ CLK
Microcontrollers :: 02-09-2010 14:38 :: amraldo :: Replies: 11 :: Views: 8995
from where u got that 250msec delay code??
and guess what?
Software Problems, Hints and Reviews :: 07-02-2010 00:41 :: hameeds01 :: Replies: 4 :: Views: 904
Please tell me how to calculate delay for an 2-input NAND gate using spectre calculator.NAND gate has two inputs and one output.between which input and output i have to take the delay.how to do this .How to calculate leakage power and dynamic power using spectre calculator.Please help me its very urgent in my (...)
Analog IC Design and Layout :: 08-02-2010 01:46 :: harishvl003 :: Replies: 2 :: Views: 2322
Hi all, i just started PIC programming few days ago . I prefer HIGH TECH C compiler for programming (in MPLAB). For making delay, i use
void delay(unsigned int z)
but i dont know how to make exact delay like 1ms,1 sec, 1 minute , etc...
pls help me.......
Microcontrollers :: 09-08-2010 14:05 :: vinodstanur :: Replies: 20 :: Views: 8432
void delay(unsigned int us)
unsigned int x;
T1CON=0x8010; //timer 1 enable with prescale of 1:8
while(TMR1using this piece of code..
i think this will give more accurate delay than you previous code..
U can heck it on oscilloscope
or make large delay of second (...)
Microcontrollers :: 01-11-2011 04:49 :: BurnOut_tesla :: Replies: 9 :: Views: 2322
I am using pic16f877a timer1 to create 2ms delay. Crystal frequency is 20mhz.
I have loaded the value 55536 in tmr1 register to count 10000 but somehow its not working.
Microcontrollers :: 01-21-2011 16:48 :: luvuslim :: Replies: 6 :: Views: 1753
what is the time output you are getting... adjust the delay to be approximate to your requirement...
you get accurate value of delay only in assembly program and not in C.. In C program you get nearest value....
So its more of trial and error method.... just run theled for required time and stop it for 5 sec and again start the led blink... k
Microcontrollers :: 02-08-2011 09:55 :: ckshivaram :: Replies: 3 :: Views: 3657
Use large L and smalle W MOSFET to work as a resistor. And use Cgs of MOSFET as capacitor. RC will lead to delay.
Analog IC Design and Layout :: 04-22-2011 06:09 :: leo_o2 :: Replies: 4 :: Views: 697
ImageShack? - Online Photo and Video Hosting
This is the circuit diagram of the project im working on. I have a few queries.
1) My Leds connected to P0.0 and P0.1 are not glowing. Is the resistance value too high?
2) The lcd backlight glows but no characters are displayed.
3) Are the 2 reset pins
Microcontrollers :: 04-27-2011 22:48 :: ppoonamk :: Replies: 5 :: Views: 531
I'm trying to create a delay with N minutes using timer 1 .. I found the following code
#fuses INTRC_IO, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
int16 delay = 0;
SETUP_TIMER_1(T1_INTERNAL | (...)
Microcontrollers :: 08-11-2011 08:37 :: raflab :: Replies: 2 :: Views: 2509
i have one txt file, containing the times and some symbols code, i want to read it using atmel89S51, the txt file is in my PC, but i want to save it on RAM/Mu or any other storage media, how can i do it
the pattern of txt file is like this
day , Symbol code1, time 1, symbol code 2, time 2 .............
Microcontrollers :: 08-16-2011 22:41 :: Micro Lover :: Replies: 4 :: Views: 392
I am new to system verilog. I am trying add a randomized delay to a module.
i tried doing this, but didnt work
del = $urandom_range(0, 9);
data_dev_slot <= ##del wr_data;
can somebody please help me on this.
ASIC Design Methodologies and Tools (Digital) :: 10-11-2012 13:04 :: gadagkar.rohit :: Replies: 5 :: Views: 2449
hi, im using the timer newly and i dono how to create a delay value for 1sec.
please anyone help me how to program or what the value i should need to give for the timer registers.
and im using a 12MHz crystal.
Microcontrollers :: 01-09-2013 11:28 :: anboli :: Replies: 1 :: Views: 953
Somebody please tell me how to generate a delay of 15min off time and 10 min on time using ATTINY2313. Please its very urgent. I tried using built in delay subroutine in MICRO C for AVR, but its not working. Please guide me.
Microcontrollers :: 04-06-2013 08:46 :: djc :: Replies: 0 :: Views: 567
There are a couple of different ways to produce a time delay, either by a software delay or by using the internal Timer 0 of the pic chip.
What times they can produce depends on the Crystal frequency you are using, so you must first state what that is.
Both hard and software delays only (...)
Microcontrollers :: 05-31-2013 15:44 :: wp100 :: Replies: 1 :: Views: 235
Hi all, I am trying to build a block that can have a 50ns delay between input and output. This is for some further logic circuit.
I am using some basic digital logic, and I know inverter can achieve this function. However, in my simulation library, each inverter only has around 50ps delay.
That means if I want to achieve 50ns (...)
Electronic Elementary Questions :: 08-22-2013 23:54 :: bhl3302 :: Replies: 1 :: Views: 253
Recently I tested a circuit and I just get S-parameters ...now I want to plot Group delay, and I don't know how to use Matlab's code to do that...
Could anybody help me?
Software Problems, Hints and Reviews :: 03-08-2014 08:24 :: sayyedjamal :: Replies: 3 :: Views: 251
You can check this graphically by drawing all signals and putting delta markers..
In additionalto, the delay may not be same for all signal levels so you should define a reference point-for instance- 50% of the rising edge.
That's why graphical examination is better..
Analog Circuit Design :: 10-30-2014 22:26 :: BigBoss :: Replies: 2 :: Views: 220
Here is some nice microcontroller projects using atmel AVR MCUs:
Oscilloscope using a microcontroller and a TV:
Projects in Neurobiology and Behavior :
Microcontrollers :: 12-20-2003 19:03 :: ME :: Replies: 3 :: Views: 4776
use word "after"
PLD, SPLD, GAL, CPLD, FPGA Design :: 04-01-2004 19:27 :: SphinX :: Replies: 7 :: Views: 7883
Need your advice:
I'm using atmel eeprom AT24C16A.
I write 15bytes into the eeprom page 0 at word adress of 0x0000, no problem, verify by read-back.
Next, after 10ms delay, I write only 5 bytes into page 0 but at word adress of 0x0003. This time I read back and found that it has overwritten my first 5 bytes (...)
Microcontrollers :: 06-29-2004 03:45 :: tom12sg :: Replies: 2 :: Views: 1886