Timer interrupt in PIC16F877A working explained

[@chaimapro9085]

The calculation of the time delay is just great. Thank you!!

[@SaiSai-jj8vy]

super bro Explanation.

[@SMtrainingacademy]

😊

[@nyashadzashechikarakara5330]

Thank you, it is very clear but how is it different, using the timer and using __delay_ms(300);

[@SMtrainingacademy]

Ya delay_ms also uses timer 0 in polling method but interrupt method produces more accurate time delay’s

[@nyashadzashechikarakara5330]

@@SMtrainingacademy okay thank you

[@SMtrainingacademy]

@@nyashadzashechikarakara5330 😊

[@longanang6218]

Thank you, but.
why is machine cycle equal to 4/20MHz ?
where is 4 from ?

[@yashvarshney6761]

Best lecture.
Lekin baaki comments kaha hai

[@SMtrainingacademy]

😊

[@RahulYadav-qm6mc]

Bro u r Pro

[@SMtrainingacademy]

Thanks Rahul

[@ranganathanrajaram2121]

Sir this is my program but not working pls tell me the reason
Unsigned long=i;
void interrupt timer()
{
if(INTCONbits. TMR0IF==1)
{i++;
TMR0=236;
INTCONbits. TMR0IF=0;
}}
void main()
{
TRISB=0;
INTCONbits. GIE=1;
INTCONbits. PEIE=1;
INTCONbits. TMR0IE=1;
OPTION_REG=0x27;
TMR0=236;
while(1)
{
if(i==1000)
{PORTBbits.RB1=0;
}
if(i=2000)
{PORTBbits.RB1=1;
i=0;}}
return;}

[@SMtrainingacademy]

Can you tell the error you got..?
Or send the program to
[e-mail]
I will rectify and send you back

[@ranganathanrajaram2121]

@@SMtrainingacademy the problem I faced is led not toggled at RB1 pin while all the pins in Port B has been active high

[@ranganathanrajaram2121]

Finally I got the answer I wrongly mentioned option register value 0x27 instead of 0x87 thank u sir

[@SMtrainingacademy]

Ok