Comments on: AVR Timers – An Introduction

By: Avinash

Avinash — Wed, 08 Feb 2012 03:41:24 +0000

@Ajit Kumar,
How can I contact you sir?
so what you have done with the above comment? Funny.

By: Ajitkumar

Ajitkumar — Tue, 07 Feb 2012 13:21:59 +0000

Really amazing sir,
I have some doubt about PWM
How can I contact you sir?

My mail-aji_maxim@yahoo.in

By: shekhar

shekhar — Mon, 06 Feb 2012 05:40:35 +0000

sir,
i want 2 control speed of bldc motor by pwm using atmega8.i want 2 vary speed from 1ms to 2ms.eg at 1ms,1.25ms,1.50,1.75ms,2ms at 50hz.will u plz tell me abt how 2 code in c.how prescaler should set or mail me code in c for 1ms at 50hz.
thank you

By: [SOLVED] ATTiny13 get current time

[SOLVED] ATTiny13 get current time — Fri, 20 Jan 2012 22:38:43 +0000

[...] ATTiny13 get current time Ok, so like how its done on this page AVR Timers – An Introduction. | eXtreme Electronics ? Tx! Reply With Quote + Post New Thread « How to resume [...]

By: Bob McTei

Bob McTei — Fri, 02 Dec 2011 09:14:02 +0000

With embedded programming the variables which are used/altered by the interrupt routines need to be declared as global volatiles.

I usually stick them just after my #defines and before my functions. Because they are defined outside of any functions, even main(), enables the variable to be accessed by all the functions in the program.

The variable is declared as volatile to stop the complier assuming the variable is a constant.

This drove me nuts when I was just learning

By: Avinash

Avinash — Tue, 29 Nov 2011 06:00:56 +0000

No I will NOT because it is already explained in every book on C! And it is assumed that an embedded developer knows C well. Or atleast has 3 or 4 book on C on his/her book self.

Bye.

By: vishal

vishal — Tue, 29 Nov 2011 05:42:11 +0000

wil u plz tell me what do u mean by volatile variable and when v declare it

By: atmega168 not working

atmega168 not working — Mon, 21 Nov 2011 14:51:19 +0000

[...] mcu now pony prog cant detect my mcu. i was goind fine until programmed code on this page AVR Timers – An Introduction. | eXtreme Electronics thanks in advance and sorry for my english prabh Reply With [...]

By: Mahmoud Fayez

Mahmoud Fayez — Mon, 24 Oct 2011 17:38:17 +0000

You do not need to mark a global variable volatile, am I wrong?

I liked the way you explained the timer so much.

Kind Regards,
Mahmoud

By: bagus

bagus — Sun, 23 Oct 2011 02:50:57 +0000

wow nice explain, i can understand more than before. thank you very much..

By: Shayan

Shayan — Sat, 22 Oct 2011 21:23:58 +0000

Hello ! I want to ask you that do we have to initialise the counter again in the ISR Routine for the timer to be reloaded or does it loads itself for the whole program when it is initialised in main program ??
For example, if i want to run a program in ISR every 100ms ..then what should i do?? Please guide me…
i want to do this
int main(){
…count initialise;
while(1);}
ISR(routine){
//repeat the below program after every 100ms
….}

By: AVR controller timer basics

AVR controller timer basics — Fri, 09 Sep 2011 16:20:09 +0000

[...] basics Here are a few more tutorials with cover the basics and compare mode using AVR timers: AVR Timers – An Introduction Timers in Compare Mode – Part I Timers in Compare Mode – Part II BigDog [...]

By: Avinash

Avinash — Thu, 28 Jul 2011 03:22:00 +0000

@Shayan,

I am not harsh at newbies. I am harsh on those who don’t have correct “approach to solve problems” or those you cannot be helped.

By: shayan

shayan — Wed, 27 Jul 2011 19:18:32 +0000

@avinash : man nice job …really really helpful tutorials. Try not to be harsh at newbies, this will flee them away !!

By: Composición Algorítmica | Palmera blog

Composición Algorítmica | Palmera blog — Wed, 27 Jul 2011 09:42:12 +0000

[...] tambíén una capa de bajo nivel, gobernada por una interrupción asociada con un timer, que gestiona la temporización necesaria para los solenoides y las luces. Los solenoides necesitan [...]

By: john

john — Sat, 25 Jun 2011 12:49:22 +0000

hmmmm ….
im a newbie tooo ….. i got the hang of the thing timers…..initially i was confused at TCCR0|=(1<

By: op

op — Wed, 22 Jun 2011 15:46:03 +0000

very good tutorial.
now iam able to understand the use of timer. i want to measure the duration between two pulse(0 to 4000 microsecond)i.e to measure the delay time to blast a fuse unit of missile. there is already a old delay timer machine to measure this but it is not working now.my plan is to trigger timer0 when first pulse come and to stop timer0 when second pulse come and thereafter to take readout tcnt0 plus no of overflow occur multiplied with 255. here my incriment is 1 micro second. pl suggest will it give accurate time.

By: sagar

sagar — Tue, 07 Jun 2011 18:25:27 +0000

fantastic tutorial ..i was confused bt after reading this i will be alble to use timer0
thanks

By: Multiplexed Seven Segment Displays. | eXtreme Electronics

Multiplexed Seven Segment Displays. | eXtreme Electronics — Mon, 30 May 2011 01:16:05 +0000

[...] Introduction To AVR Timers [...]

By: Avinash

Avinash — Sat, 21 May 2011 07:58:42 +0000

@W Lewis

Thanks !!!

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