TMR0 as counter

[sayzer]

Hi Savnik,

Since TMR0 is 8-bit, there is no way you can get 135,6 as you like.

You need to use TMR1 which is 16-bit.
Then, you will read 135,6 at TMR1 register as 1356.


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[Acetronics2]

Hi, Sayzer

As our friend Savnik didn't tell us which pic he uses ... it's difficult to answer.

let's take the 18F252 i.e.

Timer 0 can be 8 or 16 bits ... as you decide.

Some more details from Savnik could be useful ... but we are used to !!!

Alain

[sayzer]

Hi, Sayzer

As our friend Savnik didn't tell us which pic he uses ... it's difficult to answer.

let's take the 18F252 i.e.

Timer 0 can be 8 or 16 bits ... as you decide.

Some more details from Savnik could be useful ... but we are used to !!!

Alain

You are right Alain.

That is my bad.

But, I take 16F628A as the default PIC in my head when there is no mention of the PIC type.

Soon enough I will change my default PIC to 18F2550.

[savnik]

Thanks for yours answer.
My default PIC is pic16f88.
Maybe i change with pic18f1330 which have timer0 16bit.

[Acetronics2]

Hi, Savnik

Also could eventually be useful :

the PIC freq.

The Porta.4 max input freq. to be measured


Alain

[sayzer]

Thanks for yours answer.
My default PIC is pic16f88.
Maybe i change with pic18f1330 which have timer0 16bit.

Savnik,

16F88 already has 16-bit timer.

Why change the whole car while you can change one tire and get going?


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[savnik]

Savnik,

16F88 already has 16-bit timer.

Why change the whole car while you can change one tire and get going?


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From datasheet:
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The Timer0 module timer/counter has the following
features:
• 8-bit timer/counter
• Readable and writable
• 8-bit software programmable prescaler
• Internal or external clock select
• Interrupt-on-overflow from FFh to 00h
• Edge select for external clock

[Acetronics2]

Hi, Savnik

Sayzer was only telling there's a 16 Bits timer in 16F88 : Timer 1 ...

but, if you want to use RA.4 and keep the same pinout ( must we understand PC board is already made ??? ) ... you'll have to turn to 18F1320 !

Alain