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39 Threads found on edaboard.com: Pic Frequency Counter C Code
counter-app with 16c5x: 7-seg app-note: Can't believe it is so hard to browse a website (o; Though it's not for the exact MCU as you want...bus since you are an experienced pic guy it won't be hard to adapt it (
Hi, someone have developped a picbasic program for frequency counter pic based?
pic16F628 is not recommended by Microchip for new project. As a drop-in replacement the suggest pic16F628A .. so code for 628 is good for 628A .. Regards, IanP
hi guys, i am considering to design a frequency counter using atmega8, i want to use asynchronous operation of timer/counter2. frequency counter developed by pic asynchronous timer is ther.... but i want to make it with atmega8..... need some suggestion.. (...)
Hi, There you go: Schematics and C code for a pic (16F877A) frequency counter operating up to about 50 MHz
I did something similar but with a pic so not much use to you, the system also displayed road speed, oil pressure, oil temp, gear shift position, voltage etc, wasnt so hard to do, fairly basic stuff for a microc these days.
Here you Software 999MHz with 1kHz resolution (the hex files are Software
Hi, Here you'll find a nice implementation of a pic frequency counter in mikroc :
Maybe code part of mine non-pic, zero parts, 50 MHz (at least), freq meter can help you.
Try this one, it uses a pic, it is very accurate and simple. I had built it and works are also some other projects on the above page.
Best option is search on google. Find out some sample code with ur pic microcontroller. Regards Chanchal Chauhan
hiz. i have not much code skill. im using pic16F877A after reading many codes, i make a code of CAPTURE module to calculate the frequency. my code is giving me some value regarding the frequency (having direct result from Capture Low and High register CCPR1H and CCPR1L). (...)
hi all: am new and i want help i need a work simulation( of protues for a frequency counter by apic16f84 and lcd and a source code in hex.. thx alot ..
Hello I have found this project for a frequency counter Since it has many pins not used and since space is limited, I would like to port the code to another pic. As far as I can see from the datasheet
hello, To catch the information send to the LCD is a hard way.. because mode 4bits , but not impossible.. You can test in Win Xp environment to use VB6 + inpout32.dll see i don't know if the speed will be enough... because using a dll is not the fastest way.. best is 100% asm !!! so if
any one kno how to calibrate properly the internel oscillator of pic12f629 ? the factory defined calibration is not correct as far i have concerned
try this
Hi, I suppose this is a fairly simple question, but... I'm trying to write software for 3 PWM outputs on a pic, with a frequency of roughly 100=200Hz. Its for controlling the brightness of LEDs, a red, green, and blue. (Don't have an RGB led, but I'm using tiny 0403 chips close together, its as good as). I'm using the pic16F628A (...)
Hi, I recently came across a schematic in PCS's schematic vault named "digital guitar tuner". The code included was written for an Atmel 2323 chip. Now heres the thing: I want to use the same idea for a pic16f877a chip so I have tried to change all the instructions to suit a pic orientated program! am I mad? I used the hex file from a (...)
for digital ?-controller i made two projects in pic but acually i don't have the code of them because it was from two years 1- digital clock with adjustmant 2- frequancy meter if you want any explanation tell me
Try this site it is very good
Hi, There is an Application note for this on the microchip website, I believe for an pic10F device but this code can be ported to a pic12 or pic16 ! I did look for you guy's: TB094 Dimming AC Incandescent Lamps Using A pic10F200
Correct. Since you do not have interrupts on this pic, insert a test fot TRM0 rolling over to 0 inside the loop, either at Repeat or before the goto Repeat instruction. if TMR0 has rolled over, toggle GP1.
If you're using a mid-range pic (such as a pic16F8XX or similar) you can utilize the External interrupt (PORTB<0>) and a Timer interrupt (Easiest with MCUs that have CCP and a 16-bit Timer module) In a nutshell, you will count the number of times an external interrupt occurs until the number of CCP (or Timer0 overflow) interrupts amounts to one
I want to build multimeter which can measure V,I,R,C etc.I hope to use pic,ADC...But i have nt clear idea about how Current is measured ,how maintain autoranges..please give me some ideas,directions to do this project.
Hi there, Is that possible to generate 50Hz PWM frequency with using 20MHz external crystal ? From what I heard, with 20Mhz crystal frequency it couldn't create such low PWM frequency, it that correct ? Is the any other method to create PWM 50Hz by using 20MHz external crystal? Below is my current coding basically I'm using timer0 (...)
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This will be helpful to you....I think....I dose not understand your requirement / Calculation correctly- c code to count frequency pulses and display on LCD : 8051 Microcontroller Projects AVR pic Projects Tutorial
Bit 6 in T1CON, T1RUN, is a read-only status bit. You can't write to it. ---------- Post added at 23:41 ---------- Previous post was at 23:32 ---------- Further... T1RUN is set only when the pic is using the Timer1 Oscillator (external 32.76KHz source) as the whole system clock, in some sort of po
i wrote this code and i want you to help me if there somehting wrong in it include "p16f877.inc" org 0x00 goto Initialize T0_delay: movlw 0x28;0x21 banksel TRISC movwf OPTION_REG banksel TMR0 ;movlw 0x6a ;movwf TMR0 clrf TMR0 banksel INTCON chIF:btfss INTCON,2 goto chIF return display: call Table ban
Can someone convert the codes from 16f to 18f ? I will use these 'frequency counter' codes in my pic18F452. i will be very grateful 90875 //--------------------------------------------- // frequency counter // www.circuit-projects.com // Y.Erol (...)
hello everyone! I am trying to find the frequency of incoming signal ( lab power supply properly transformed to small value) to my pic. I used Zero Cross Detection ckt in such a way that at every zero cross detected point I get high pulse and low pulse elsewhere. Can anyone provide me required c code for such operation. I am using (...)
DO YOUR F DONKEY WORK SOUNDS LIKE YOU WANT A WHOLE PROJECT SO WORK FOR IT!!!! MAKE A pic PROGRAM FOR 0 -1KHZ STEPS OF PWM UNIT IN 1 KHZ STEPS +0 -100 STEP SELECTABLE IN INCRUMS OF 1 HZ POST IT AS C code THEN ASK FOR HELP DONT BE LAME THINK IN STEPS UP OR DOWN PLEASE ! I COULD WRITE code LIKE THIS WITH MY EYES (...)
You could use the pics PWM output, set to 50% at 125kHz If teh 125kHz needs to be accurate your pic will need a crystal controlled clock. code will be something like this snip used on a pic18F4525. ;set up PWM on CCP1 for PSU sync generator & turn it ON bcf TRISC, 2 ;set RC2 as output bsf T2CON, TMR2ON (...)
or how about a pic code w/c multiplies its pulse input by 60??
I don't know about the pic but generally it can be like this. 1. Based on desired frequency (fo) decide the counter/Timer clock(fc) and Timer overflow rate(ft). ft = fc/MAX(timer value) 2. Make a table of the "PWM duty cycles" for the desired frequency. the number of entries in the Table will be n = ft/fo 3. Enable (...)
thanks for your reply friend but i am not having idea about pic controllers. can we interface HS1101 to AT89s52 in same way as you have interfaced to pic? Ok. I can give you the idea only as I dont have ready code. Step 1: Develop a circuit using 8051 to calculate frequency of a signal. As we all k
The program generates a "1 second interrupt" if the pic is running at 8MHz. Maybe you have not set the pic clock frequency as 8MHz in Proteus. If you haven't, set the pic clock frequency as 8MHz.
sir, i am doing my project gsm modem interfacing with pic 16f877a+hitech c...i have done to sending sms,,but now problam with receiving plz help me....how to i receive sms using interruts...this is my code... void main() { serial_init(); gsm_init(); while(1); } void gsm_init() { delay(); serial_string(cmd_AT)