how to use 16f877 pic timer1 as counter in c

[aamiralikhoja]

timer 1 flag 16f877

Please tell me how to use timer1 of pic 16f877 as counter which works


as autoreload mode as in 89c51 16 bit timer.Countes 8 clock pulses .


and agian autoreloded with same valuses.I would want to use poll method not


interrupt method.

 

[gidimiz]

c pic tmr1

Hi,

I dont know where you read that TMR1 has autoreload? the only way to use a pull method is to check when the TMR1 register is highr then the XXXX number that you are looking for, then reset TMR1 register.
The easy way, valculate the diffrence, set it in the register and wait for an interupt. then reload the value to the register and wait again.
BTY, you dont have to turn on the interupt of TMR1, you can just check the flag TMR1IF, if =1 then reset flag and reload value.

Good lcuk.

 

[waseem]

16f877 counter

Hi!
Read the data sheet there are different ways of doing it.
you can even utilise the(CCP) capture compare module for this purpose.
Regards.